Servo Pin Kit - GM 4L80E, 4L85E, TH400

SERVO PIN KIT - DIRECT REPLACEMENT FOR 1999 AND LATER 4L80E AND 4L85E. MUST BE USED IN EARLY 4L80E ('91-'98) & T400 WHEN USING #405455 WIDE BAND

The 407655 Servo Pin Kit is a precision replacement component designed for late-model 4L80E and 4L85E automatic transmissions (1999 and newer). It serves as a direct-fit upgrade, offering improved durability and accuracy compared to the factory pin, especially when installing the wider 405455 intermediate band. Crafted to maintain optimal servo piston alignment, this extended pin kit prevents seal wear and ensures consistent band application under heavy-duty conditions. Notably, this kit becomes a necessity on earlier 4L80E units ('91–'98) or TH400 transmissions utilizing the 405455 wide intermediate band, ensuring correct fitment and reliable performance when shifting through demanding gears.