Pump Sealing Rings (High Clutch), Use w/ Aluminum Drum - Pair

PUMP SEALING RINGS (HIGH CLUTCH), USE W/ ALUMINUM DRUM (PAIR)

The Coan Racing COA‑12312A Pump Sealing Rings (High Clutch, Aluminum Drum) are a pair of precision-engineered sealing rings specifically crafted for GM Powerglide transmissions equipped with aluminum drums. These rings provide a tight, leak-free seal, restoring original hydraulic integrity and preventing fluid bypass during operation.

Machined to exact outer and inner dimensions, they create a reliable barrier under high pressure without requiring drum modifications. Their durable construction ensures long-term performance in race and street applications alike, making them an essential, direct-fit solution for maintaining clutch pressure and transmission efficiency in aluminum drum Powerglide rebuilds.