The best 68RFE thermal bypass valve upgrade depends on whether you want continuous cooler flow, a stated flow increase, or a kit with broad application details. The ATS Diesel upgrade removes the factory bypass valve, while the RevMax options emphasize cooler circulation and flushing. For buyers comparing fitment, the Permabrace kit specifies 2013–2018 Ram 2500 and 3500 trucks with a 6.7L Cummins and 68RFE or AS69RC transmission. Confirm your truck’s year and transmission before ordering.
| Product | Best suited for | Notable listed feature |
|---|---|---|
| ATS Diesel Upgrade | Buyers seeking a simple bypass-delete option | Eliminates the factory bypass valve |
| RevMax, 87% Flow Listing | Buyers prioritizing a stated flow increase | Claims cooler flow increases by up to 87% |
| Permabrace Delete Kit | Owners checking specified truck fitment | Lists 2013–2018 Ram 2500/3500 applications |
| RevMax Cooler-Flow Upgrade | DIY owners who want easier cooler-line flushing | Describes room-temperature fluid flushing |
| FQRANBO Replacement Valve | Buyers comparing a valve-style replacement | Lists several transmission and part-number applications |
ATS Diesel 68RFE Thermal Bypass Upgrade
The ATS Diesel upgrade is a direct choice for buyers looking for a bypass-delete approach. Its listed features say it eliminates the factory bypass valve and is intended to keep transmission temperatures in check. The product name covers 68RFE and AS69RC applications, so it may suit owners comparing those transmission types.
Best for: Buyers who want a straightforward factory-valve elimination option rather than a product listing centered on a specific flow percentage or flushing benefit.
Limitation: The provided feature information does not state model-year fitment details or quantify a flow increase. Verify application compatibility before purchasing.
RevMax 68RFE Upgrade With Stated Flow Increase
This RevMax listing says it removes the stock thermal bypass valve for full-time cooler flow from startup. It also claims cooler flow increases by up to 87% by removing internal restrictions. The listed benefits include temperature management during heavy-load or high-performance use and cooler-line flushing with room-temperature fluid.
Best for: Buyers who want a stated flow comparison and a product described for demanding use. It is also a relevant option for DIY maintenance when cooler-line flushing is a priority.
Limitation: The 87% figure is a product claim in the supplied features, not an independently verified result. Confirm year and transmission fitment with the seller before ordering.
Permabrace 68RFE And AS69RC Delete Kit
Permabrace specifies compatibility with 2013–2018 Ram 2500 and Ram 3500 trucks equipped with a 6.7L Cummins and a 68RFE or AS69RC transmission. Its features describe removing the factory thermal restriction to allow cooler-circuit circulation from startup. The listing identifies towing, hauling, city traffic, and hot climates as use cases where cooler circulation may be relevant.
Best for: Owners who want clearly stated year, truck, engine, and transmission details to compare against their vehicle.
Limitation: Fitment is limited to the applications stated in the listing. Check the transmission code and model year rather than relying on the truck badge alone.
RevMax Thermal Bypass Valve For 2013–2018 Rams
This RevMax option is listed for 2013–2018 Ram 2500 and 3500 trucks. Its features emphasize immediate fluid circulation instead of the factory valve’s cooler-flow restriction at low temperatures. The listing also says the upgrade can support cooler-line flushing with room-temperature fluid, avoiding the need for a hot flush machine according to the product description.
Best for: Owners of the listed Ram model years who prioritize continuous circulation and a simpler cooler-line flushing process.
Limitation: The supplied details do not specify a numeric flow increase. Confirm the exact transmission and vehicle fitment before purchase.
FQRANBO Thermal Bypass Valve Replacement
FQRANBO lists fitment for 6.7L Cummins Ram 2500 and 3500 trucks with 68RFE or AS69RC transmissions from 2013 onward. The description also names part numbers 68186711AA and 68186711AB and includes other transmission applications. Its cooling description says the design directs trans cooler flow through the cooler.
Best for: Buyers comparing a valve-style replacement with listed part numbers and multiple stated applications.
Limitation: The broad compatibility list spans different vehicles and transmissions. Match the part number and transmission to your vehicle before ordering.
Buying Guide: Choosing A 68RFE Thermal Bypass Valve
Do you want a delete or a replacement?
Several products are described as deleting or eliminating the factory bypass valve to support continuous cooler flow. The FQRANBO listing is presented as a thermal bypass valve replacement. Compare the product’s stated design and intended application rather than assuming all products install or function the same way.
How should you check fitment?
Confirm the model year, Ram 2500 or 3500 designation, engine, and transmission. A 6.7L Cummins does not by itself establish that a truck has a 68RFE; the listings also name AS69RC applications. Match any listed part number to the part being replaced.
Which features matter for towing or maintenance?
For demanding use, compare products that explicitly discuss continuous cooler flow under load. If you plan to flush cooler lines, look for a listing that specifically describes room-temperature-fluid flushing. Treat stated performance figures as seller-provided claims unless independently verified.
What should you confirm before installation?
Review the product’s current application information and installation requirements, and consult a qualified transmission professional if fitment or the cooling system configuration is uncertain. These listings do not provide enough detail to establish installation steps for every vehicle.
Frequently Asked Questions
What does a 68RFE thermal bypass valve do?
It controls transmission-fluid routing through the cooler circuit. The products in this list describe upgrades that remove or replace the factory bypass arrangement to allow greater or continuous cooler flow.
Will every listed product fit a 68RFE Ram?
No. Applications differ by product. Check the listed model years, engine, transmission, and any part numbers before buying.
Are 68RFE and AS69RC the same transmission?
No. They are listed as separate transmission applications. Verify which transmission is installed in your truck.
Do these upgrades guarantee lower transmission temperatures?
No temperature result is guaranteed by the supplied product information. The listings describe cooling-flow goals or claims, but actual results can depend on the vehicle and operating conditions.
Can a bypass-delete upgrade help with cooler-line flushing?
Some listings specifically say cooler lines can be flushed with room-temperature fluid without a hot flush machine. Check the selected product’s instructions and confirm the method is appropriate for your vehicle.