RJSPHH 68RFE / AS69RC Thermostatic Bypass Upgrade for 2013-2018 Dodge Ram 6.7L Cummins — Aluminum TBV, Faster Cooler Flow

RJSPHH thermostatic bypass upgrade replaces the stock TBV so your 68RFE or AS69RC transmission cooler circulates fluid immediately, reducing operating temperatures and stress on the gearbox.

Factory thermal bypass valves divert most cooler flow until the transmission reaches a preset temperature, which delays cooling when it may be needed most. This aluminum upgrade is engineered to lift that restriction for 2013–2018 Dodge Ram 6.7L Cummins automatics using the 68RFE or AISIN AS69RC transmissions, helping the cooler do its job sooner without modifying the original cooler itself.

How does this upgrade change cooling behavior on startup?

Unlike the stock TBV that blocks cooler flow until the fluid warms, the RJSPHH unit opens earlier so transmission oil begins circulating through the cooler almost immediately. That can lower peak fluid temperatures during towing or heavy loads and reduce repeated heat cycles.

• Opens sooner than factory valve to let fluid reach the cooler quickly
• Reduces time fluid spends circulating only inside the housing
• Helps avoid repeated temperature spikes during short drives

Will this fit my truck and install without major modifications?

This part is built specifically for 2013–2018 Dodge Ram trucks with the 6.7L Cummins diesel and automatic 68RFE or AISIN AS69RC transmissions. It replaces the original thermostatic bypass valve and installs in the same location, so no custom piping or extensive rework is required for compatible vehicles.

• Direct compatibility: 2013–2018 6.7L Cummins with 68RFE or AS69RC
• Forms a like-for-like replacement with original mounting points
• Designed for bolt-on installation using existing cooler lines

What materials and reliability features does the product offer?

The valve body is machined from corrosion-resistant aluminum for long-term strength and heat tolerance under repeated thermal cycles. Components are selected to resist aging from hot transmission fluid, and a one-year warranty backs the part against defects.

• High-grade aluminum construction for corrosion resistance
• Durable internal spring and seal materials rated for transmission fluid exposure
• One-year warranty with seller support and 24-hour response

How will this upgrade affect transmission longevity and performance?

By allowing the cooler to receive fluid earlier, operating temperatures can be reduced during the most demanding conditions, which lowers thermal stress on seals and components. While no part can guarantee a lifespan, improved cooling stability supports healthier transmission operation over time.

• Promotes steadier fluid temperatures under load
• Helps prevent frequent overheating cycles that accelerate wear
• Complementary to proper maintenance and fluid service intervals

Who is this for: Owners of 2013–2018 Dodge Ram trucks with the 6.7L Cummins who run heavy loads, tow regularly, or want to improve transmission cooling behavior without replacing the entire cooler. If you seek a durable, bolt-in thermostatic bypass upgrade manufactured from corrosion-resistant aluminum and backed by a one-year warranty, this RJSPHH unit is designed for your OEM 68RFE or AS69RC setup.