4L65E Sonnax SmartShell Heavy Duty Reaction Shell Kit 77749-02K

Sonnax SmartShell Heavy Duty Reaction Shell Kit

Genuine Sonnax SmartShell Heavy Duty Reaction Shell Kit for the GM, Chevrolet, GMC, Cadillac 4L65E 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 4L60E / 4L65E / 4L70E units. Sonnax part number 77749-02K.

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 4L65E rebuild or repair.

Shipping & Support

Fast shipping and knowledgeable support on every 4L65E order.