Pro Series 1 Stage TH400 Converter Dump Valve Kit

The Pro Series 1 Stage TH400 Converter Dump Valve Kit by Hughes Performance is engineered for serious transmission builders and performance enthusiasts running TH400 automatic transmissions in high-horsepower applications. This kit addresses a critical need in heavily modified vehicles where conventional torque converter cooler lines can rupture under extreme pressure spikes, risking catastrophic transmission failure and costly repairs. The dump valve system acts as a safety release, protecting your investment while maintaining full converter efficiency during normal operation.

This kit incorporates Hughes Performance's proven valve design that opens only when cooler line pressure exceeds safe thresholds, redirecting excess fluid away from vulnerable cooler passages. The intelligent pressure-relief design prevents line rupture without compromising heat dissipation during steady-state driving, ensuring your transmission stays cool when it matters most. Precision-engineered internals and quality materials ensure reliability across thousands of heat cycles, whether you're drag racing, street driving, or towing heavy loads in demanding conditions.

The Pro Series 1 Stage kit is ideal for TH400 owners pushing beyond factory power levels—including street rods, muscle cars, trucks, and dedicated race vehicles. Installation integrates directly into existing cooler line circuits, requiring no modifications to transmission pan or housing, making it a bolt-on upgrade for experienced builders. Proper installation ensures the dump valve activates only under genuine pressure emergencies, preserving cooler efficiency and extending transmission lifespan in both street and competition environments.