Maximizer 4x4 TH400 Replacement for TH350 4x4 Non Lock-Up (All Chevrolet)

This TH400 Transmission is built with TCI Maximizer 4x4 components to handle between 450-550 HP in 4x4 off-road applications that require crisp shifts. Replaces pre-1980 4x4 TH350 units.