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Premium Gasket and Seal Kit for GM TH400

Prevent leaks and maintain critical internal pressures with the Coan Engineering Gasket & Seal Kit for the GM TH400 transmission. A transmission is only as good as its ability to hold pressure, and this kit provides the high-quality seals, O-rings, and gaskets required to keep your TH400 operating efficiently. Designed for both street performance and competitive racing, these components are built to withstand the high temperatures and fluid pressures associated with high-performance driving.

Kit Highlights

• Complete Coverage: Includes all necessary gaskets, O-rings, and seals for a full TH400 transmission refresh.
• High-Temperature Materials: Engineered to resist degradation from heat and synthetic racing fluids.
• Precision Fit: Manufactured to exact OEM specifications to ensure a perfect seal every time.
• Leak Prevention: Critical for maintaining consistent line pressure and shift quality.
• Reliability: Essential for any transmission service or rebuild to prevent fluid loss and contamination.

Whether you are performing a routine service or a major overhaul, using fresh seals and gaskets is the most cost-effective way to protect your transmission investment. Coan Engineering provides the reliability you need to stay on the track and off the jack stands. Find this kit and other essential drivetrain maintenance supplies at GGCRACING.