High-Performance Composite Sealing Rings

Maintain optimal hydraulic pressure in your TH400 transmission with Coan Engineering's premium composite sealing rings. Designed specifically for race-spec forward and direct aluminum drums, these rings are engineered to provide a superior seal compared to standard factory components. In high-performance racing environments, preventing fluid bypass is essential for crisp, firm shifts and overall transmission longevity.

Why Choose Coan Composite Rings?

• Enhanced Sealing: Composite material conforms better to the drum surface, reducing internal leakage.
• Race-Proven: Designed to withstand the heat and pressure cycles of competitive drag racing and circle track events.
• Compatibility: Perfectly suited for TH400 transmissions utilizing aluminum drums.
• Reliability: Reduces the risk of clutch failure caused by pressure loss in the hydraulic system.

When you are pushing your transmission to the limit, every detail matters. These sealing rings are a simple yet critical upgrade that can prevent catastrophic failure during a race. Their advanced material composition ensures they maintain their integrity even under extreme operating temperatures. Whether you are a professional engine builder or a dedicated enthusiast working on your own vehicle, choosing Coan Engineering components ensures your transmission operates at peak efficiency. Shop for all your high-performance transmission rebuild needs at GGCRACING.