Caterpillar Aftermarket Seal Kits for Construction Machinery

Product Description 381-2331 is an aftermarket hydraulic cylinder seal kit for selected Caterpillar 950H and 962H wheel loaders. This standard-size cylinder kit supports complete reseal work on the applicable cylinder group and includes reference components such as a buffer seal, U-cup seal, double-lip wiper, piston seal, wear ring, backup ring,...

Product Description 375-1287 is an aftermarket steering cylinder seal kit for selected Caterpillar wheeled excavators and material-handling equipment. This reference is intended for steering-cylinder service, helping repair teams renew sealing components when diagnosing external leakage or pressure loss at the steering cylinder. It should not be selected as a general...

Product Description 4P-9942 is an aftermarket EPDM rubber radiator end-tank seal for selected Caterpillar cooling-system assemblies. With a 22.5 mm thickness, this reference is used during radiator repair to seal the specified joint between the radiator core and end tank, helping service teams address coolant leakage at the cooling-unit connection....

Product Description 4P-9943 is an aftermarket EPDM rubber radiator end-tank seal for selected Caterpillar cooling-system assemblies. Also identified as a radiator fan-side end-tank seal, this 121 mm × 140 mm × 22.5 mm component is used during radiator service to seal the designated end-tank connection. It is not a hydraulic...

Product Description 160-6386, 9Y-1655, and 8N-7139 are cross-reference numbers for an aftermarket radiator core and end-tank seal used in selected Caterpillar cooling-system assemblies. Made for radiator service work, this EPDM rubber seal reference helps buyers identify the correct component when rebuilding folded-core radiator sections or addressing leakage around radiator tank...

Product Description 258-8600 is an aftermarket replacement radiator seal cross-referenced to 272-5437 for selected Caterpillar modular cooling assemblies. This EPDM rubber seal is 159.4 mm long with a 48 mm inside diameter and is used to seal joints between radiator sections. It is important to confirm the removed seal length...

Product Description 272-5438 is an aftermarket replacement modular radiator seal for selected Caterpillar heavy-equipment cooling systems. This reference is a high-durometer EPDM rubber seal with a 216.8 mm length and 48 mm inside diameter, used between modular radiator sections to support a sealed cooling assembly. Buyers should verify the exact...

Product Description 335-1414 is an aftermarket control valve seal kit reference for compatible Caterpillar backhoe loaders. A 424B parts manual shows it in a control-valve/control-bank assembly, not a cylinder group. It supports resealing the applicable valve location during control-valve service. The public listing does not identify a universal valve position...

Product Description 487-6170 is an aftermarket hydraulic piston pump seal kit reference for compatible Caterpillar wheel loaders and D7 track-type tractors. It services the hydraulic pump assembly that produces oil flow for the hydraulic circuit; it is not a piston motor, cylinder, or control-valve kit. Official fitment lists models, but...

Product Description 310-5742 is an aftermarket hydraulic relief-valve seal kit reference for compatible Caterpillar wheel loaders. Unlike a solenoid valve kit, it services a pressure-relief valve in the hydraulic circuit rather than an electrically actuated valve. Do not order by loader model alone: hydraulic configurations can vary by serial number...

Product Description 332-5669 is an aftermarket solenoid valve seal kit reference for compatible Caterpillar equipment. Official data identifies backup rings and O-rings in NBR/HNBR/XNBR rubber and PTFE for servicing solenoid valve group components. It seals hydraulic valve interfaces, not a cylinder, pump, or motor overhaul. One machine may contain several...

Product Description 308-1838 is an aftermarket hydraulic manifold relief-valve seal kit reference for compatible Caterpillar equipment. Official data identifies O-rings and split back-up rings for servicing the manifold relief valve group. It is a control valve kit, not a hydraulic cylinder, travel motor, or transmission repair kit. The same machine...