Sleeve Kit / Input Housing Overrun Sleeve Kit / Gm 4L60 / 4L60E / 4L65E / 4L70E (includes: Overrun Piston / Overrun Reinforcement Sleeve / Outer Overrun Piston Seal / Inner Overrun Piston Seal)

Sonnax Input Housing Overrun Sleeve Kit for GM 4L60, 4L60E, 4L65E, 4L70E Transmissions

Restore proper overrun clutch function in your GM 4L60 family transmission with this comprehensive Sonnax overrun sleeve kit from Atk. Designed to address worn or damaged input housing overrun components, this kit includes everything needed to repair the overrun piston assembly and prevent clutch apply issues. It is an ideal solution for rebuilders and transmission shops working on Chevrolet and GM vehicles equipped with 4L60, 4L60E, 4L65E, and 4L70E units.

Key Features

• Includes overrun piston, overrun reinforcement sleeve, outer overrun piston seal, and inner overrun piston seal
• Engineered to restore proper overrun clutch operation and prevent slippage or burn-up
• Direct-fit replacement for worn or cracked factory input housing components
• Manufactured by Atk to meet or exceed OEM specifications for durability and performance
• Sold as a complete kit for efficient, one-time repair of the overrun piston assembly

Compatibility

This Sonnax input housing overrun sleeve kit is compatible with Chevrolet and GM vehicles equipped with 4L60, 4L60E, 4L65E, and 4L70E automatic transmissions. It is not manufactured by Chevrolet or GM; those brands are listed solely as compatible vehicle applications.

Why Choose This Part?

When the overrun piston or sleeve in your 4L60E or 4L65E fails, it can cause harsh engagement, slipping, or complete loss of overrun clutch function. This Atk-manufactured Sonnax kit delivers the exact components needed to correct the problem and get your transmission back on the road with confidence. Order now and restore reliable performance to your GM transmission.