Superior TH400 Turbo 400 3L80 Stage 2 Performance Rebuild Kit

Comprehensive Superior stage 2 performance rebuild kit for the GM TH400 Turbo 400 (3L80) heavy-duty three-speed automatic transmission. Includes all gaskets, seals, clutch plates, steels, and friction materials needed for a professional-quality rebuild. The TH400 is renowned for its strength and durability in high-torque applications from muscle cars to heavy trucks.

This kit covers all TH400 transmissions from 1964 to 1990 in Chevrolet, GMC, Pontiac, Buick, and Oldsmobile vehicles. Every component is manufactured to OEM standards with premium materials designed for long service life even under heavy load and high-performance conditions. Trusted by professional transmission shops worldwide.