O-ringed End Plug / 3/4 Relay 4L60E / 4L65E / 4L70E

Sonnax O-ringed End Plug for 3/4 Relay 4L60E, 4L65E, 4L70E Transmissions

The Sonnax O-ringed End Plug for the 3/4 relay circuit is a direct-fit upgrade for 4L60, 4L60E, 4L65E, and 4L70E automatic transmissions. Manufactured by Atk, this precision-engineered plug replaces the factory-style end plug in the 3/4 relay valve bore to help restore proper hydraulic sealing and shift consistency. It is an ideal repair solution for worn valve bodies where leakage at the relay sleeve causes slipping, delayed engagement, or burnt 3-4 clutches.

Key Features

• Sonnax-designed O-ringed end plug for the 3/4 relay circuit
• Restores hydraulic sealing in worn 4L60E/4L65E/4L70E valve bodies
• Helps eliminate 3-4 clutch slippage and delayed shifts
• Direct-fit replacement for the factory end plug location
• Manufactured by Atk for reliable, consistent performance

Compatibility

This Sonnax O-ringed end plug is compatible with 4L60, 4L60E, 4L65E, and 4L70E automatic transmissions. It fits various vehicle brands that use these GM transmissions, including Chevrolet, GMC, Buick, Pontiac, Oldsmobile, Cadillac, and other compatible applications. The part is manufactured by Atk, not by the vehicle brands listed.

Why Choose This Part?

If your 4L60E family transmission is showing signs of 3-4 clutch wear, slipping, or delayed shifts, this O-ringed end plug from Atk is a cost-effective repair that targets a common source of hydraulic leakage. It installs in the 3/4 relay bore and helps restore proper circuit pressure without replacing the entire valve body. Order now to get your transmission shifting correctly again.