TH400 Reverse Band Servo Apply Pin Extender Kit 1965-1990

Overview

This is a servo piston assembly and apply kit for the GM, Chevrolet, GMC, Cadillac TH400 automatic transmission (1965-1990). Built to OEM specification and engineered as a direct-fit replacement for a professional-grade TH400 repair or rebuild. Every TH400 order ships fast and is backed by our support team.

What's Included

• a larger-apply servo piston assembly
• cover, snap ring and seals as applicable
• an apply pin where supplied with the kit

Fitment

Fits GM, Chevrolet, GMC, Cadillac vehicles equipped with the TH400 automatic transmission, 1965-1990. Please confirm your transmission model and year before ordering to ensure correct fitment.

Common Symptoms & When to Use

Consider this TH400 part when you experience:

• a slipping or burnt 2-4 band
• soft or flared 1-2 and 3-4 shifts
• weak band apply under load or towing
• a servo bore or seal leak found during rebuild

Specifications

• Transmission: TH400
• Year Range: 1965-1990

Quality & Service

In-stock parts ship fast; special-order items ship within 3 business days. Free shipping on orders over $70. Backed by Core Transmission Parts — your source for TH400 transmission parts.