TH400 Servo Piston Kit with Gaskets

Overview

This is a servo piston assembly and apply kit for the GM, Chevrolet, GMC, Cadillac TH400 automatic transmission. 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. 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

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.