"Super Pump" Billet Aluminum Gerotor Pump Assembly

SUPER PUMP BILLET ALUMINUM GEROTOR PUMP ASSEMBLY W/ BOLT-IN ALLOY STATOR SUPPORT (USE W/ RING TYPE INPUT SHAFT AND BUSHING TYPE DRUM, REQUIRES BEARING COA-12421)

The Coan Racing COA‑12816 Super Pump Billet Aluminum Gerotor Assembly is a high-performance front pump engineered specifically for GM Powerglide transmissions equipped with ring-type input shafts and bushing-style clutch drums. This advanced unit features a billet aluminum gerotor pump paired with a bolt-in alloy stator support tube, delivering exceptional fluid flow and structural rigidity. The pump housing is pre-machined to accept the COA‑12421 pump-to-drum bearing (sold separately), ensuring precise shaft support and reducing rotational friction.

Designed for drop-in installation, the COA‑12816 provides race-grade robustness without the need for case modifications. Its gerotor design increases hydraulic efficiency and reduces parasitic losses, while the bolt-in stator support secures internal alignment, making this assembly ideal for high-horsepower street builds or serious drag applications. Whether refreshing a performance Powerglide or building a competition-ready transmission, this Super Pump delivers consistent fluid delivery, enhanced longevity, and professional-grade performance.