Piping Hot Art Works RevMax 68RFE Thermal Bypass Valve Kit for 2013–2018 Ram 2500/3500 6.7L Cummins — 6061 Aluminum, +87% Cooler F

The RevMax 68RFE Thermal Bypass Valve Upgrade Kit replaces the stock bypass valve to provide continuous cooler flow, reduce transmission temperatures, and allow easier cooler-line flushing for 2013–2018 Ram 2500/3500 6.7L Cummins trucks.

If your Ram’s OEM thermal bypass restricts fluid circulation until the transmission warms, this upgrade kit removes that limitation. Manufactured from 6061 aluminum with integrated cooling fins, the RevMax valve increases cooler flow while resisting heat soak. The kit includes two premium O-rings, two clips, and a cleaning cloth to support a straightforward install and leak-free operation.

How does this kit improve transmission cooling right away?

By eliminating the factory thermal bypass, the RevMax valve opens the cooler circuit full-time so fluid flows to the external cooler from startup. That continuous circulation reduces peak operating temperatures under towing, hauling, or sustained high-load driving.

• Removes internal flow restriction found in OEM valve designs
• Increases cooler flow by up to 87% for better heat transfer
• 6061 aluminum body with cooling fins dissipates heat from fluid and housing

Can I flush my cooler lines without special equipment?

Yes. The RevMax design lets you perform a cooler-line flush using room-temperature fluid and basic shop tools rather than expensive hot-flush machines. This makes routine maintenance simpler and more accessible for DIY mechanics.

• Flushes using standard fluid at ambient temperature
• No need for specialized hot-flush machinery
• Works well during scheduled service or when replacing cooler hoses

What materials and parts are included, and why do they matter?

The valve is machined from 6061 aluminum for strength and thermal conductivity, and features integrated fins to increase surface area for cooling. The kit comes with two premium O-rings and two clips to ensure secure installation and to reduce the chance of leaks over time.

• 6061 aluminum body for durability and heat dissipation
• Integrated cooling fins to enhance thermal transfer
• Two O-rings and clips for a leak-resistant seal and easy replacement

How does this upgrade affect reliability during heavy towing or performance use?

Improved cooler circulation lowers transmission fluid temperatures, which can reduce thermal stress on components during demanding use. That can help maintain consistent shift quality and reduce the risk of heat-related failures when towing heavy loads or running the truck hard.

• Reduces heat buildup under sustained load
• Helps maintain fluid viscosity and lubrication properties
• Supports long-term component durability under higher thermal loads

Who is this for? The RevMax 68RFE Thermal Bypass Valve Upgrade Kit is aimed at Ram 2500/3500 owners with the 6.7L Cummins (model years 2013–2018) who tow, haul, or use their truck in high-demand conditions and want a simple, durable cooling improvement. It’s also well suited to DIYers who perform routine transmission service and want the option to flush cooler lines without investing in specialized equipment. Professional shops will appreciate the straightforward installation and included O-rings and clips that streamline replacement or upgrade work.