Warren Diesel 6R140 Auxiliary Transmission Cooler Kit

Product Description:

Keep your 6R140 transmission temps in check with the Warren Diesel 6R140 Auxiliary Transmission Cooler Kit.

The factory cooling system on 6.7L Powerstroke trucks works fine for daily driving, but heavy towing, hot weather, or added power quickly push transmission fluid temperatures into the danger zone. Excessive heat breaks down fluid, causes slipping, and shortens the life of your transmission — especially on tuned or heavily loaded Super Duty trucks.

This auxiliary cooler kit adds a high-efficiency external cooler in parallel with the stock system, increasing heat rejection and fluid capacity while maintaining proper flow. Expect significantly lower transmission temperatures under load, better fluid life, and more confidence when towing heavy trailers or working hard.

Key Features:

• Direct bolt-on or inline installation for 2017–2019+ 6R140 transmissions
• High-capacity transmission cooler with efficient fin design
• Includes all necessary lines, fittings, and mounting hardware
• Increases overall cooling capacity without affecting stock thermostat operation
• Helps prevent overheating during extended towing, grades, or high ambient temperatures

Perfect add-on for Stock+, Competition, or Billet 6R140 builds — or any 6R140 that sees real-world diesel duty.

Protect your investment and keep your transmission living longer and shifting stronger. Add the Warren Diesel 6R140 Auxiliary Transmission Cooler Kit to your order today.