{"title":"MASTAS seal","description":"\u003cp\u003eRuijueparts supplies aftermarket seal kits for MST backhoe loader hydraulic cylinders and steering applications. Send a part number, machine model, serial number or photos for reference checking. Multi-SKU sourcing, older-equipment support, and neutral or customer-specified packaging are available.\u003c\/p\u003e","products":[{"product_id":"5422090-front-boom-lift-cylinder-seal-kit","title":"5422090 Front Boom Lift Cylinder Seal Kit For MST M542 | Ruijueparts","description":"\u003ch2 class=\"sec-head\"\u003eProduct Description\u003c\/h2\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e\n\u003cp\u003e\u003cspan\u003e5422090 is an aftermarket front boom lift cylinder seal kit reference for MST backhoe loaders. Catalogues identify it for the loader boom lift hydraulic cylinder on MST M542\/M544 families, rather than the rear excavator boom, bucket cylinder, or steering system. This matters because front-loader and rear-backhoe cylinders can look similar but use different seals. Confirm the machine model, production version, front lift-cylinder reference, and serial number before service. Ruijueparts can check part numbers, compare photos or purchasing lists, and provide neutral or customer-specified packaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"Fsg96\"\u003e\u003c!--TgQPHd||[]--\u003e\u003c\/div\u003e\n\u003ch2 id=\"s0-2-1-25-5-20-1-101[1]-2-3-7[0]-4[0]-3[0]-11[1]-1-5-title\" class=\"section-title__title\"\u003e\u003cspan class=\"ux-layout-section-module-evo__title\"\u003e\u003cspan class=\"ux-textspans\"\u003eItem specifics\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable width=\"100%\" style=\"width: 100.088%; height: 324.977px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 22.6641px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 22.6641px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003ePart Number:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"et2\" height=\"17\" width=\"76\" style=\"height: 22.6641px; width: 65.9112%;\"\u003e5422090\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eFits Models:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eM542, M544, M542 Plus, M544 Plus, M642, M644\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eBrand:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cspan\u003eMASTAS replacement\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 39.1875px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eType:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 39.1875px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eAftermarket Front Boom Lift Cylinder Seal Kit\u003cbr\u003eHydraulic Cylinder Repair Seal Kit\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 204.344px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 204.344px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 204.344px;\"\u003e\n\u003cul\u003e\n\u003cli\u003eFor MST-compatible backhoe loader front boom lift cylinder service. This aftermarket seal kit supports distributors, repair workshops and equipment owners when they remove, inspect, reseal and reinstall the applicable front loader lift cylinder. Confirm the cylinder reference, machine version and serial number before ordering.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBackhoe Loader: M542, M544, M542 Plus, M544 Plus, M642, M644\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eSize:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eStandard Size\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eFAQ\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ1: Is 5422090 for the front loader boom or the rear excavator boom?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eAvailable catalogues identify it for the front loader boom lift cylinder. Do not order it for a rear boom, arm, bucket, or stabilizer cylinder without separate confirmation.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ2: Does it fit every MST M542 or M544 machine?\u003cbr\u003e\u003c\/strong\u003e\u003cb\u003eA: \u003c\/b\u003eNot automatically. Machine production versions and cylinder assemblies can vary. Confirm the exact model, serial number, and front lift-cylinder reference before ordering.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ3: Why can’t I select the kit from a photo alone?\u003cbr\u003eA:\u003c\/strong\u003e Front and rear cylinders may use similar-looking seals but have different dimensions, groove designs, and kit configurations. A parts reference or cylinder assembly number is more reliable.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RuiJueParts","offers":[{"title":"Default Title","offer_id":52515308798183,"sku":"5422090","price":16.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5251\/9399\/files\/5422090.png?v=1787564249"},{"product_id":"5422190-bucket-lift-cylinder-seal-kit","title":"5422190 Bucket Lift Cylinder Seal Kit For MST | Ruijueparts","description":"\u003ch2 class=\"sec-head\"\u003eProduct Description\u003c\/h2\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e\n\u003cp\u003e\u003cspan\u003e5422190 is an aftermarket bucket lift cylinder seal kit reference for MST M542 and M544 backhoe loaders. Parts catalogs identify it as a bucket-lift hydraulic cylinder repair kit. It differs from 5422090, referenced for the front boom lift cylinder, so the two kits should not be interchanged. Because a backhoe loader has front loader and rear excavator functions, confirm the installed cylinder assembly, machine version, and serial number before dismantling. Ruijueparts can review part numbers, diagrams, and photos and support multi-SKU sourcing with neutral or customer-specified packaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"Fsg96\"\u003e\u003c!--TgQPHd||[]--\u003e\u003c\/div\u003e\n\u003ch2 id=\"s0-2-1-25-5-20-1-101[1]-2-3-7[0]-4[0]-3[0]-11[1]-1-5-title\" class=\"section-title__title\"\u003e\u003cspan class=\"ux-layout-section-module-evo__title\"\u003e\u003cspan class=\"ux-textspans\"\u003eItem specifics\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable width=\"100%\" style=\"width: 100.088%; height: 324.977px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 22.6641px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 22.6641px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003ePart Number:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"et2\" height=\"17\" width=\"76\" style=\"height: 22.6641px; width: 65.9112%;\"\u003e5422190\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eFits Models:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eM542, M544\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eBrand:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eMASTAS replacement\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 39.1875px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eType:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 39.1875px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eAftermarket Bucket Lift Cylinder Seal Kit\u003cbr\u003eHydraulic Cylinder Repair Seal Kit\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 204.344px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 204.344px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 204.344px;\"\u003e\n\u003cul\u003e\n\u003cli\u003eFor MST-compatible M542 and M544 bucket lift cylinder service. This aftermarket seal kit supports distributors, repair workshops, and fleet maintenance teams when they remove, inspect, reseal, and reinstall the applicable bucket lift hydraulic cylinder. Confirm the cylinder assembly reference and machine serial number before ordering.\u003c\/li\u003e\n\u003cli\u003eBackhoe Loader: M542, M544\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eSize:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eStandard Size\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eFAQ\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ1: What cylinder does 5422190 service?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003ePublished catalogs identify it as a bucket lift hydraulic cylinder repair kit for MST M542 and M544 backhoe loaders. Confirm the exact installed cylinder assembly before ordering.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ2: Is 5422190 interchangeable with 5422090?\u003cbr\u003e\u003c\/strong\u003e\u003cb\u003eA: \u003c\/b\u003eNo. 5422090 is referenced for the front boom lift cylinder, while 5422190 is referenced for a bucket lift cylinder. Their seal configurations should not be assumed to match.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ3: Is this kit for the front loader bucket or rear excavator bucket?\u003cbr\u003eA:\u003c\/strong\u003e The available public reference confirms a bucket lift cylinder application but does not specify one universal front or rear position. Verify the cylinder assembly number or parts diagram before purchase.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RuiJueParts","offers":[{"title":"Default Title","offer_id":52515340746983,"sku":"5422190","price":16.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5251\/9399\/files\/5422190.png?v=1787566871"},{"product_id":"5422490-stabilizer-telescopic-cylinder-seal-kit","title":"5422490 Stabilizer \u0026 Telescopic Cylinder Seal Kit For MST M542 | Ruijueparts","description":"\u003ch2 class=\"sec-head\"\u003eProduct Description\u003c\/h2\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e\n\u003cp\u003e\u003cspan\u003e5422490 is an aftermarket hydraulic cylinder seal kit reference for MST M542 and M544 backhoe loaders. Published parts catalogs list this number for both the telescopic dipper cylinder and the stabilizer cylinder, so the installed cylinder group must be confirmed before ordering. It is not a universal boom or bucket cylinder kit. Send the machine model, serial number, cylinder position, parts diagram, or old-seal photos to Ruijueparts for reference checking. Multi-SKU sourcing, selected older-equipment support, and neutral or customer-specified packaging are available.\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"Fsg96\"\u003e\u003c!--TgQPHd||[]--\u003e\u003c\/div\u003e\n\u003ch2 id=\"s0-2-1-25-5-20-1-101[1]-2-3-7[0]-4[0]-3[0]-11[1]-1-5-title\" class=\"section-title__title\"\u003e\u003cspan class=\"ux-layout-section-module-evo__title\"\u003e\u003cspan class=\"ux-textspans\"\u003eItem specifics\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable width=\"100%\" style=\"width: 100.088%; height: 324.977px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 22.6641px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 22.6641px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003ePart Number:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"et2\" height=\"17\" width=\"76\" style=\"height: 22.6641px; width: 65.9112%;\"\u003e5422490 \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eFits Models:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eM542, M544\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eBrand:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eMASTAS replacement\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 39.1875px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eType:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 39.1875px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eAftermarket Hydraulic Cylinder Seal Kit\u003cbr\u003eStabilizer \u0026amp; Telescopic Dipper Cylinder Repair Seal Kit\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 204.344px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 204.344px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 204.344px;\"\u003e\n\u003cul\u003e\n\u003cli\u003eFor hydraulic cylinder resealing on MST-compatible M542 and M544 backhoe loaders. This kit supports workshops and fleet maintenance teams when they remove, inspect, reseal, and reinstall the applicable telescopic dipper or stabilizer cylinder. Confirm the installed cylinder group before purchase.\u003c\/li\u003e\n\u003cli\u003eBackhoe Loader: M542, M544\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eSize:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eStandard Size\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eFAQ\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ1: What cylinder does MST 5422490 fit?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003ePublished catalogs list 5422490 for both the telescopic dipper cylinder and stabilizer cylinder of MST M542 and M544 backhoe loaders. Confirm the actual cylinder group before purchase.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ2: Is 5422490 a boom or bucket cylinder seal kit?\u003cbr\u003e\u003c\/strong\u003e\u003cb\u003eA: \u003c\/b\u003eNo. It should not be used as a general substitute for boom, arm, or bucket cylinder kits. Cylinder location and parts-diagram verification are important.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ3: What information should I send to verify this kit?\u003cbr\u003eA:\u003c\/strong\u003e Please provide the machine model, serial number, cylinder position, existing part number, parts diagram, or clear photos of the removed seals and cylinder.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RuiJueParts","offers":[{"title":"Default Title","offer_id":52515347661031,"sku":"5422490","price":16.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5251\/9399\/files\/5422490.png?v=1787568405"},{"product_id":"5422590-hydraulic-cylinder-seal-kit","title":"5422590 Hydraulic Cylinder Seal Kit For MST M544 | Ruijueparts","description":"\u003ch2 class=\"sec-head\"\u003eProduct Description\u003c\/h2\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e\n\u003cp\u003e\u003cspan\u003e5422590 is an aftermarket hydraulic cylinder seal kit reference for MST backhoe loaders. Trade catalogs identify it as a “kazayak” cylinder repair kit, while published purchasing records describe it broadly as a boom-cylinder repair kit for an MST 544. As these sources do not establish one standardized English cylinder name, confirm the installed cylinder, parts diagram, and machine serial number before ordering. It is not interchangeable with 5422490 stabilizer\/telescopic or 5422090 loader-lift cylinder kits. Ruijueparts can check references and support multi-SKU purchasing with flexible packaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"Fsg96\"\u003e\u003c!--TgQPHd||[]--\u003e\u003c\/div\u003e\n\u003ch2 id=\"s0-2-1-25-5-20-1-101[1]-2-3-7[0]-4[0]-3[0]-11[1]-1-5-title\" class=\"section-title__title\"\u003e\u003cspan class=\"ux-layout-section-module-evo__title\"\u003e\u003cspan class=\"ux-textspans\"\u003eItem specifics\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable width=\"100%\" style=\"width: 100.088%; height: 324.977px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 22.6641px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 22.6641px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003ePart Number:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"et2\" height=\"17\" width=\"76\" style=\"height: 22.6641px; width: 65.9112%;\"\u003e5422590\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eFits Models:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eM544\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eBrand:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eMASTAS replacement\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 39.1875px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eType:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 39.1875px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eAftermarket Hydraulic Cylinder Seal Kit\u003cbr\u003eHydraulic Cylinder Repair Seal Kit\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 204.344px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 204.344px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 204.344px;\"\u003e\n\u003cul\u003e\n\u003cli\u003eFor hydraulic-cylinder resealing service on MST-compatible backhoe loaders. Suitable for repair shops and fleet teams that remove, inspect, reseal, and reinstall the confirmed cylinder assembly. Verify cylinder location and part reference before purchase.\u003c\/li\u003e\n\u003cli\u003eBackhoe Loader: M544\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eSize:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eStandard Size\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eFAQ\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ1: What cylinder does MST 5422590 fit?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003ePublic sources identify it as an MST hydraulic-cylinder repair kit but do not provide one consistently verified English cylinder position. Confirm the installed cylinder and parts diagram before ordering.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ2: Is 5422590 the same as 5422490?\u003cbr\u003e\u003c\/strong\u003e\u003cb\u003eA: \u003c\/b\u003eNo. 5422490 is publicly listed for stabilizer and telescopic-cylinder applications. Do not substitute the two kits based only on the machine model.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ3: Is 5422590 a confirmed boom cylinder seal kit?\u003cbr\u003eA:\u003c\/strong\u003e One published MST 544 purchasing record calls it a boom-cylinder repair kit, while a trade catalogue uses a different local cylinder term. For accuracy, verify the cylinder group with the machine serial number or old kit.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RuiJueParts","offers":[{"title":"Default Title","offer_id":52515365486823,"sku":"5422590","price":16.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5251\/9399\/files\/5422590.png?v=1787568902"},{"product_id":"5422690-dipper-arm-cylinder-seal-kit","title":"5422690 Dipper Arm Cylinder Seal Kit For MST M542 | Ruijueparts","description":"\u003ch2 class=\"sec-head\"\u003eProduct Description\u003c\/h2\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e\n\u003cp\u003e\u003cspan\u003e5422690 is an aftermarket hydraulic cylinder seal kit for the excavator-side dipper arm cylinder on MST backhoe loaders. It is referenced for MST M542, M544, M542 Plus, and M544 Plus machines, with KK470 also appearing as a market reference. This kit is intended for cylinder resealing during repair when leakage, reduced holding performance, or damaged seals require service. It is not a substitute for front loader lift, stabilizer, telescopic, or bucket-cylinder kits. Confirm the machine serial number, cylinder position, and existing reference before ordering. Ruijueparts supports part-number checking, mixed-SKU inquiries, and flexible packaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"Fsg96\"\u003e\u003c!--TgQPHd||[]--\u003e\u003c\/div\u003e\n\u003ch2 id=\"s0-2-1-25-5-20-1-101[1]-2-3-7[0]-4[0]-3[0]-11[1]-1-5-title\" class=\"section-title__title\"\u003e\u003cspan class=\"ux-layout-section-module-evo__title\"\u003e\u003cspan class=\"ux-textspans\"\u003eItem specifics\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable width=\"100%\" style=\"width: 100.088%; height: 345.571px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 22.6641px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 22.6641px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003ePart Number:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"et2\" height=\"17\" width=\"76\" style=\"height: 22.6641px; width: 65.9112%;\"\u003e5422690\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eFits Models:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eM542, M544, M542 Plus, M544 Plus\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eBrand:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eMASTAS replacement\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 59.7812px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 59.7812px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eType:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 59.7812px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eAftermarket Dipper Arm Cylinder Seal Kit\u003cbr\u003eHydraulic Cylinder Repair Seal Kit\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 204.344px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 204.344px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 204.344px;\"\u003e\n\u003cul\u003e\n\u003cli\u003eFor MST-compatible backhoe loaders during removal, inspection, resealing, and reinstallation of the excavator-side dipper arm hydraulic cylinder. Suitable for repair shops, dealers, and fleet maintenance teams. Confirm cylinder position and serial number before purchase.\u003c\/li\u003e\n\u003cli\u003eBackhoe Loaders: M542, M544, M542 Plus, M544 Plus\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eSize:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eStandard Size\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eFAQ\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ1: What cylinder is MST 5422690 for?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003e5422690 is referenced for the excavator-side dipper arm hydraulic cylinder on applicable MST backhoe loaders. It is not a front loader cylinder kit.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ2: Which MST models use 5422690?\u003cbr\u003e\u003c\/strong\u003e\u003cb\u003eA: \u003c\/b\u003ePublished catalogs list MST M542, M544, M542 Plus, and M544 Plus. Machine production changes can affect fitment, so verify the serial number and cylinder reference.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ3: Is 5422690 interchangeable with 5422490 or 5422090?\u003cbr\u003eA:\u003c\/strong\u003e No. 5422490 is associated with stabilizer\/telescopic-cylinder applications, while 5422090 is for the front loader lift cylinder. Each cylinder requires its own confirmed kit.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RuiJueParts","offers":[{"title":"Default Title","offer_id":52517320884455,"sku":"5422690","price":16.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5251\/9399\/files\/5422690.png?v=1787638122"},{"product_id":"5422790-bucket-cylinder-seal-kit","title":"5422790 Bucket Cylinder Seal Kit For MST M544 | Ruijueparts","description":"\u003ch2 class=\"sec-head\"\u003eProduct Description\u003c\/h2\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e\n\u003cp\u003e\u003cspan\u003e5422790 is an aftermarket hydraulic seal kit reference for the excavator-side bucket cylinder on MST M542 and M544 backhoe loaders. It is used when a confirmed bucket cylinder is removed for resealing after leakage, seal wear, or loss of hydraulic holding performance. Parts catalogs associate this number with standard and extendable backhoe-bucket cylinder arrangements, so verify the installed cylinder and machine serial number before purchase. This is not the front loader bucket tilt kit 5422190, nor a stabilizer or telescopic dipper kit. Ruijueparts can review your reference, diagram, or old-kit photos before quotation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"Fsg96\"\u003e\u003c!--TgQPHd||[]--\u003e\u003c\/div\u003e\n\u003ch2 id=\"s0-2-1-25-5-20-1-101[1]-2-3-7[0]-4[0]-3[0]-11[1]-1-5-title\" class=\"section-title__title\"\u003e\u003cspan class=\"ux-layout-section-module-evo__title\"\u003e\u003cspan class=\"ux-textspans\"\u003eItem specifics\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable width=\"100%\" style=\"width: 100.088%; height: 345.571px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 22.6641px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 22.6641px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003ePart Number:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"et2\" height=\"17\" width=\"76\" style=\"height: 22.6641px; width: 65.9112%;\"\u003e5422790\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eFits Models:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eM542, M544\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eBrand:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eMASTAS replacement\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 59.7812px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 59.7812px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eType:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 59.7812px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eAftermarket Backhoe Bucket Cylinder Seal Kit\u003cbr\u003eHydraulic Cylinder Repair Seal Kit\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 204.344px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 204.344px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 204.344px;\"\u003e\n\u003cul\u003e\n\u003cli\u003eFor MST-compatible M542 and M544 backhoe loaders during service of the excavator-side bucket hydraulic cylinder. Repair teams can remove, inspect, reseal, and reinstall the confirmed cylinder assembly. Check the cylinder group, machine serial number, and parts diagram before ordering.\u003c\/li\u003e\n\u003cli\u003eBackhoe Loaders: M542, M544\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eSize:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eStandard Size\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eFAQ\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ1: What cylinder is MST 5422790 for?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003e5422790 is listed for the excavator-side, or backhoe, bucket hydraulic cylinder on MST M542 and M544 backhoe loaders.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ2: Is 5422790 the same as MST 5422190?\u003cbr\u003e\u003c\/strong\u003e\u003cb\u003eA: \u003c\/b\u003eNo. 5422190 is associated with the front loader bucket tilt cylinder. 5422790 is for the rear excavator-side bucket cylinder and should not be substituted.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ3: Does 5422790 fit standard and extendible backhoe arrangements?\u003cbr\u003eA:\u003c\/strong\u003e Public catalogues associate it with both arrangements, but production configuration can vary. Confirm the installed cylinder, parts diagram, and serial number before ordering.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RuiJueParts","offers":[{"title":"Default Title","offer_id":52517334483175,"sku":"5422790","price":16.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5251\/9399\/files\/5422790.png?v=1787638570"},{"product_id":"5442390-boom-swing-cylinder-seal-kit","title":"5442390 Boom Swing Cylinder Seal Kit For MST M542 | Ruijueparts","description":"\u003ch2 class=\"sec-head\"\u003eProduct Description\u003c\/h2\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e\n\u003cp\u003e\u003cspan\u003e5442390 is an aftermarket hydraulic seal kit reference for the boom swing, or arm-rotation, cylinder on MST backhoe loaders. It supports the cylinder that pivots the excavator boom laterally, rather than the lift, dipper, or bucket cylinder. Published catalogs list MST M542, M544, M542 Plus, M544 Plus, M642, and M644, and market records associate it with KK473. Confirm the machine serial number, cylinder group, and installed reference before ordering. Ruijueparts can assist with part-number checking, mixed-SKU inquiries, and neutral or customer-specified packaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"Fsg96\"\u003e\u003c!--TgQPHd||[]--\u003e\u003c\/div\u003e\n\u003ch2 id=\"s0-2-1-25-5-20-1-101[1]-2-3-7[0]-4[0]-3[0]-11[1]-1-5-title\" class=\"section-title__title\"\u003e\u003cspan class=\"ux-layout-section-module-evo__title\"\u003e\u003cspan class=\"ux-textspans\"\u003eItem specifics\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable width=\"100%\" style=\"width: 100.088%; height: 345.571px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 22.6641px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 22.6641px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003ePart Number:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"et2\" height=\"17\" width=\"76\" style=\"height: 22.6641px; width: 65.9112%;\"\u003e5442390\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eFits Models:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eM542, M544, M542 Plus, M544 Plus, M642, M644\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eBrand:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eMASTAS replacement\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 59.7812px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 59.7812px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eType:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 59.7812px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eAftermarket Dipper Arm Cylinder Seal Kit\u003cbr\u003eHydraulic Cylinder Repair Seal Kit\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 204.344px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 204.344px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 204.344px;\"\u003e\n\u003cul\u003e\n\u003cli\u003eFor MST-compatible backhoe loaders during removal, inspection, resealing, and reinstallation of the excavator boom swing \/ arm-rotation hydraulic cylinder. Suitable for workshops, dealers, and fleet maintenance teams. Verify cylinder position and serial number before purchase.\u003c\/li\u003e\n\u003cli\u003eBackhoe Loaders: M542, M544, M542 Plus, M544 Plus, M642, M644\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eSize:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eStandard Size\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eFAQ\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ1: What does the MST 5442390 seal kit repair?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eIt is used to reseal the boom swing, or arm-rotation, hydraulic cylinder that moves the excavator boom laterally on applicable MST backhoe loaders.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ2: Is 5442390 a travel or swing motor seal kit?\u003cbr\u003e\u003c\/strong\u003e\u003cb\u003eA: \u003c\/b\u003eNo. It is a hydraulic cylinder repair kit, not a hydraulic motor seal kit. Its application is the boom swing cylinder.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ3: Which machines can use 5442390?\u003cbr\u003eA:\u003c\/strong\u003e Published catalogs list MST M542, M544, M542 Plus, M544 Plus, M642, and M644. Confirm serial number and cylinder configuration before purchase.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RuiJueParts","offers":[{"title":"Default Title","offer_id":52517343658215,"sku":"5442390","price":16.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5251\/9399\/files\/5442390.png?v=1787640503"},{"product_id":"5422890-hydraulic-lock-piston-seal-kit","title":"5422890 Hydraulic Lock Piston Seal Kit For MST M542 M544 | Ruijueparts","description":"\u003ch2 class=\"sec-head\"\u003eProduct Description\u003c\/h2\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e\n\u003cp\u003e\u003cspan\u003e5422890 is an aftermarket piston seal kit for the hydraulic lock of the rear carriage on MST backhoe loaders. It is used to reseal the piston within the locking mechanism that secures the rear excavator carriage assembly; it is not a standard boom, dipper, bucket or hydraulic control-valve seal kit. Published catalogues identify this application for MST M542 and M544, while other trade listings also include selected Plus versions. Confirm the machine serial number, rear-carriage lock assembly and installed reference before ordering. Ruijueparts supports part-number checking, mixed-SKU enquiries and neutral or customer-specified packaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"Fsg96\"\u003e\u003c!--TgQPHd||[]--\u003e\u003c\/div\u003e\n\u003ch2 id=\"s0-2-1-25-5-20-1-101[1]-2-3-7[0]-4[0]-3[0]-11[1]-1-5-title\" class=\"section-title__title\"\u003e\u003cspan class=\"ux-layout-section-module-evo__title\"\u003e\u003cspan class=\"ux-textspans\"\u003eItem specifics\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable width=\"100%\" style=\"width: 100.088%; height: 345.571px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 22.6641px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 22.6641px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003ePart Number:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"et2\" height=\"17\" width=\"76\" style=\"height: 22.6641px; width: 65.9112%;\"\u003e5422890\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eFits Models:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eM542, M544\u003c\/span\u003e\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eBrand:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eMASTAS replacement\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 59.7812px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 59.7812px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eType:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 59.7812px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eAftermarket Hydraulic Lock Piston Seal Kit\u003cbr\u003eRear Carriage Lock Repair Seal Kit\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 204.344px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 204.344px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 204.344px;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eFor service of the rear-carriage hydraulic locking mechanism on MST-compatible backhoe loaders. Repair teams can remove, inspect, reseal and reinstall the confirmed hydraulic-lock piston assembly. One kit is required per piston; verify the lock assembly and serial number before purchase.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eBackhoe Loaders: M542, M544\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.6518%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eSize:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9112%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eStandard Size\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eFAQ\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ1: What does MST 5422890 repair?\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eA: \u003c\/b\u003eIt reseals the piston of the hydraulic locking mechanism used with the rear carriage of applicable MST backhoe loaders.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ2: Is 5422890 a normal hydraulic cylinder seal kit?\u003cbr\u003e\u003c\/strong\u003e\u003cb\u003eA: \u003c\/b\u003eNo. It is a dedicated hydraulic-lock piston kit. Do not substitute it for boom, dipper, bucket, stabilizer or loader-lift cylinder seal kits.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQ3: Is one 5422890 kit enough for the complete locking assembly?\u003cbr\u003eA:\u003c\/strong\u003e Published application information states that one kit is used per hydraulic-lock piston. Confirm how many lock pistons are fitted to your specific machine before ordering.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RuiJueParts","offers":[{"title":"Default Title","offer_id":52517394186471,"sku":"5422890","price":16.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5251\/9399\/files\/5422890.png?v=1787641579"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5251\/9399\/collections\/5422790.png?v=1787641761","url":"https:\/\/www.ruijueparts.com\/collections\/mastas-seal.oembed","provider":"RuiJueParts","version":"1.0","type":"link"}