Valve Kit / Tcc Regulator 4L80-E / 4L85-E

Sonnax Valve Kit / TCC Regulator for 4L80-E / 4L85-E Transmissions by ATK

The Sonnax TCC Regulator Valve Kit (34994-01K) is an essential repair component for 4L80-E and 4L85-E automatic transmissions. Manufactured by ATK, this kit addresses torque converter clutch regulation issues, helping restore proper lockup function and extend transmission life. Ideal for rebuilders and technicians seeking a reliable, direct-fit solution.

Key Features

• Direct replacement for worn or sticking TCC regulator valves
• Restores proper torque converter clutch apply and release
• Manufactured by ATK to exacting tolerances for a precise fit
• Helps eliminate converter clutch slip and related codes
• Durable construction for long-lasting performance

Compatibility

This Sonnax valve kit is compatible with 4L80-E and 4L85-E transmissions. It is designed to fit various vehicle brands that use these transmissions. Please verify your transmission model and valve body configuration before ordering.

Why Choose This Part?

When your 4L80-E or 4L85-E transmission shows signs of TCC malfunction, this ATK-manufactured Sonnax kit offers a cost-effective repair without replacing the entire valve body. Restore smooth shifting and reliable lockup. Order now and get your transmission back on the road.