6L50 Sonnax Boost Valve Kit 104520-12K

Sonnax Boost Valve Kit

Genuine Sonnax Boost Valve Kit for the GM, Chevrolet, GMC, Cadillac 6L50 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 6L45 / 6L50 / 6L80 / 6L90 units. Sonnax part number 104520-12K.

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 6L50 rebuild or repair.

Shipping & Support

Fast shipping and knowledgeable support on every 6L50 order.

Special Order

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