Product Description 17M-15-05121 is an aftermarket transmission control valve service kit matched 1:1 to the original Komatsu kit reference. It is used for servicing the transmission control valve on selected D155AX-5, D275A-5, and D275AX-5 crawler dozers. This valve manages transmission hydraulic circuits and gear-control functions within the powertrain; it is...

Product Description85800007 is an aftermarket back-up ring supplied by Ruijueparts. The CNH parts listing identifies a back-up ring. A New Holland LB90.B hydraulic lifting-cylinder diagram lists this reference among the cylinder service parts. A back-up ring is not an O-ring or a complete kit. Preserve the specified seal arrangement and...