Sonnax 34914-28K Externally Adjustable Low/Reverse Servo Kit Includes:

• Cover
• Piston
• Pin
• Jam Nut
• Cover Seals (2) PTFE, 1 Extra
• Piston Seal
• Cover O-Ring
• Pin O-Ring

Sonnax 34914-28K Externally Adjustable Low/Reverse Servo Kit Features:

• Designed for GM 4L80-E and 4L85-E racing transmissions, the Sonnax externally adjustable low/reverse servo kit makes band maintenance quick and easy – an ideal way to improve reliability and make staging more consistent and predictable
• Vehicles with a transbrake rely on the low/reverse (L/R) band to hold the car at the line; if the servo is out of adjustment, the piston can bottom out in the case, preventing the band from fully applying and causing the vehicle to creep forward during staging
• OE steel servo covers are difficult to adjust in-vehicle, making quick checks or corrections impractical for most racers
• Sonnax’s improved servo design solves this: the adjuster extends through the cover for fast access, allowing a simple push test to check piston movement
• Quickly check and adjust the low/reverse band to prevent transbrake malfunction
• Unique servo cover and adjuster design make in-vehicle band service easy
• Works with or without OE 1-2 accumulator piston
• 6061 anodized billet aluminum piston and cover