850RE Sonnax Priming Valve & Seal Kit 35740-37K

Sonnax Priming Valve & Seal Kit

Genuine Sonnax Priming Valve & Seal Kit for the GM, Chevrolet, GMC, Cadillac 850RE automatic transmission. Sonnax parts are the aftermarket standard for transmission repair and performance, engineered to correct common failure points and add durability beyond the original design.

Fitment

Fits 845RE / 850RE units. Sonnax part number 35740-37K.

Why Sonnax

Trusted by professional builders and performance shops, Sonnax components are made in the USA to exacting tolerances. This is a direct-fit upgrade for a 850RE rebuild or repair.

Shipping & Support

Fast shipping and knowledgeable support on every 850RE order.

Special Order

This Sonnax part is available by special order. Contact us for current price and availability before ordering.