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.

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Strange ,Billet U/C taper / ball pinion support body for 10" gear sets

Strange ,Billet U/C taper / ball pinion support body for 10" gear sets

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