Sonnax pinion gear 77731-01 is a direct replacement for worn or damaged OE pinion gears in rear planetaries in listed GM transmissions. Helical pinion gear crafted from case-hardened alloy steel for added durability.

More From This Category

Sonnax Pinion Needle Roller, GM, 4L65-E, 4L70-E

Sonnax Pinion Needle Roller, GM, 4L65-E, 4L70-E

$10.83

Strange For Ford 9' Pro carrier tapered bearing pinion support / polished

Strange For Ford 9' Pro carrier tapered bearing pinion support / polished

$421.46