Mishimoto Thermal Bypass Valve Kit for 2019-2024 Ram 2500/3500 (6.7L)

Fits 2019-2024 Ram 2500 and 3500 models equipped with the 6.7L Cummins diesel engine.

Protect your Ram's transmission from overheating caused by a failed factory thermostat. The stock cooling systems on both the 68-RFE and Aisin AS69RC transmissions utilize an internal thermal bypass valve that often fails in the closed position, preventing fluid from reaching the external cooler. The Mishimoto Thermal Bypass Valve Kit replaces this weak point with a CNC-machined aluminum housing featuring integrated cooling fins for superior heat dissipation.

This kit offers dual-mode versatility for various climates. The included high-quality thermostat opens 10°F earlier than the OE unit to initiate cooling sooner, while the included full-flow bypass plug allows for constant fluid flow to the cooler—ideal for trucks operating in consistently hot environments or heavy-towing applications. The black anodized finish ensures long-term corrosion resistance in harsh under-vehicle conditions.

• Fits 68-RFE and Aisin AS69RC transmissions
• CNC-machined 6061 aluminum construction with cooling fins
• Includes both a serviceable thermostat and a full-flow bypass plug
• Thermostat opens 10°F earlier than stock for improved temperature regulation
• Durable black anodized finish
• Manufacturer Part Number: MMTC-RAM2-TBV
• Mishimoto Lifetime Guarantee