Sonnax 124740-76K Actuator Feed Accumulator Piston Kit for GM 6T70 6T75 6T80

The Sonnax 124740-76K actuator feed accumulator piston kit restores hydraulic control and renews shift performance in GM Generation 2 6T70, 6T75, and 6T80 transmissions. This precision-engineered kit addresses common wear issues that cause shift problems and fluid loss in these popular GM six-speed automatic transmissions.

Key Features:

• Drop-in sleeve/piston assembly provides a new and unworn bore for hydraulic sealing of the piston
• Sleeve incorporates an O-ring which provides a positive seal to prevent leakage even in worn bores
• Hardcoat anodized aluminum piston combats premature wear
• Highly wear-resistant billet sleeve seals bore from wear-related fluid loss
• Easy drop-in installation with no modifications required

This kit renews the hydraulic integrity of the actuator feed accumulator circuit, restoring normal shift operation and feel. The sleeve design creates a new sealing surface even in worn valve body bores, eliminating the need for expensive replacements. Ideal for transmission rebuilders and professional technicians addressing shift complaints, delayed engagements, or hydraulic control issues in second-generation GM 6-speed transmissions.