1.82 REACTION SUN GEAR W/FLANGE (OEM)

The Coan Racing COA‑12786 is an OEM-spec reaction sun gear designed specifically for GM Powerglide transmissions using a 1.82 low-gear ratio. Precision-machined to match factory dimensions, the gear incorporates an integral flange that ensures optimal engagement and alignment within the planetary assembly. This sun gear maintains proper tooth geometry under repeated torque, promoting smooth gear transitions and enduring reliability.

Whether rebuilding a street-driven Powerglide or upgrading for light competition, the COA‑12786 offers an exact-fit solution to restore or enhance planetary integrity and drivetrain performance.