TH400 Turbo 400 HD Hardened Sun Shell 1965-1990 CTS-TH400-SHL-1236 Sonnax

Sonnax TH400 Turbo 400 HD Hardened Sun Shell

Overview

Professional-grade hardened sun shell for the GM TH400 Turbo 400 3L80 heavy-duty automatic transmission. Manufactured by Sonnax to exacting OEM specifications, this HD sun shell is a direct replacement for worn or damaged original components.

The TH400 is the workhorse of classic GM drivetrains, and quality hard parts are essential for reliable operation.

Compatible with all TH400 transmissions from 1964 to 1990 in Chevrolet Corvette, Camaro SS, Chevelle SS, C10/C20 trucks, GMC trucks, Pontiac GTO, Firebird, Buick GSX, and Oldsmobile 442. Precision-machined for perfect fitment and long service life under demanding conditions.

All parts ship from our warehouse with quality inspection. Same-day shipping on most orders. Professional installation recommended.