BD DIESEL 1061528 COOLER BYPASS DELETE DODGE RAM 2500/3500/4500/5500 68RFE/AS69RC 2013–2018 AND 66RFE/AS66RC 2014–2018

Product Description

The BD DIESEL 1061528 Cooler Bypass Delete is designed to improve transmission cooling reliability on Dodge Ram trucks equipped with 68RFE, AS69RC, 66RFE, and AS66RC automatic transmissions. From the factory, these transmissions use a thermal bypass valve that restricts cooler flow until fluid reaches a specific temperature. Under towing, heavy load, or high ambient conditions, this restriction can contribute to elevated transmission temperatures.

BD Diesel 1061528, transmission cooler bypass delete, 68RFE cooling upgrade, AS69RC transmission temperature control, 66RFE cooler bypass delete, AS66RC cooling improvement, Dodge Ram transmission reliability upgrade

By eliminating the factory bypass valve, the BD Diesel cooler bypass delete ensures continuous fluid flow through the transmission cooler at all times. This provides more consistent temperature control, improved heat rejection, and better long-term protection for internal transmission components—especially critical for towing, commercial use, and high-duty-cycle trucks.

Fitment

• 2013–2018 Ram 2500 – 68RFE Automatic
• 2013–2018 Ram 3500 – 68RFE / AS69RC Automatic
• 2013–2018 Ram 4500 – AS69RC Automatic
• 2013–2018 Ram 5500 – AS69RC Automatic
• 2014–2018 Ram 1500 / 2500 / 3500 – 66RFE / AS66RC Automatic

Fitment Note: Designed for listed Ram automatic transmissions only. Verify transmission model before ordering.

Cross-Reference / Compatible BD DIESEL Products

• BD DIESEL 1061525 DEEP SUMP TRANSMISSION PAN – 68RFE
• BD DIESEL 1030362 PROTECT68 PRESSURE CONTROL KIT
• BD DIESEL 1064015 TRANSMISSION COOLER – 68RFE / AS69RC

FAQ

What does a cooler bypass delete do?

It removes the factory thermal bypass valve, allowing transmission fluid to flow through the cooler at all times for more consistent temperature control.

Is this recommended for towing?

Yes. Trucks used for towing, hauling, or commercial work benefit greatly from continuous transmission cooling.

Will this cause overcooling in cold climates?

In most applications, improved flow does not cause issues. Transmission fluid still warms through normal operation, while maintaining safer peak temperatures.

Specifications for BD DIESEL PRODUCTS 1061528