Skip to content

Mishimoto 03-07 Dodge Ram 5.9L Cummins Replacement Transmission Cooler

Save 9% Save 9%
Original price $176.00
Original price $176.00 - Original price $176.00
Original price $176.00
Current price $159.95
$159.95 - $159.95
Current price $159.95
Availability:
23 in stock, ready to be shipped

Free returns on all eligible orders

You have 30 days to request a return. All sale items are final sale.

The factory transmission oil cooler on your 2003-2007 Dodge Ram 5.9L Cummins is a liquid-to-liquid cooling unit, utilizing the engine's cooling system to cool the transmission fluid during warm outside temperatures and warm the fluid during cold outside temperatures. This design is tried and true, and it works. Until it doesn't. When they wear out and fail, it can leak coolant into your transmission fluid. Mixing coolant into your transmission fluid can have catastrophic results, and nobody wants to spend thousands of dollars to rebuild or replace their transmission if it can be avoided. The Mishimoto Replacement Transmission Oil Cooler is a direct fit, OEM replacement that requires no modification to install. Made to OEM specifications, this transmission oil cooler is equivalent to an OEM part. By replacing your transmission cooler preventatively, you can save your transmission from falling victim to premature failure. As with all of our products, this cooler is backed by our signature Mishimoto Lifetime Warranty.

Installation Instructions
  • Includes new powdercoated bracket and brass fittings for easy installation
  • Equivalent to OEM specifications for fit and function
  • Durable, corrosion-resistant aluminum construction
Shipping information

Use this text to share information about your product.

Returns & warranty

Use this text to share information about your product.

Vehicle Compatibility 39 vehicles

Year Make Model Submodel
2003 Dodge Ram 1500 Laramie
2003 Dodge Ram 1500 SLT
2003 Dodge Ram 1500 ST
2003 Dodge Ram 2500 Laramie
2005 Dodge Ram 2500 Laramie
2006 Dodge Ram 2500 Laramie
2007 Dodge Ram 2500 Laramie
2003 Dodge Ram 2500 SLT
2004 Dodge Ram 2500 SLT
2005 Dodge Ram 2500 SLT
2006 Dodge Ram 2500 SLT
2007 Dodge Ram 2500 SLT
2006 Dodge Ram 2500 Sport
2007 Dodge Ram 2500 Sport
2003 Dodge Ram 2500 ST
2004 Dodge Ram 2500 ST
2005 Dodge Ram 2500 ST
2006 Dodge Ram 2500 ST
2007 Dodge Ram 2500 ST
2006 Dodge Ram 2500 TRX4
2007 Dodge Ram 2500 TRX4
2003 Dodge Ram 3500 Laramie
2004 Dodge Ram 3500 Laramie
2005 Dodge Ram 3500 Laramie
2006 Dodge Ram 3500 Laramie
2007 Dodge Ram 3500 Laramie
2003 Dodge Ram 3500 SLT
2004 Dodge Ram 3500 SLT
2005 Dodge Ram 3500 SLT
2006 Dodge Ram 3500 SLT
2007 Dodge Ram 3500 SLT
2006 Dodge Ram 3500 Sport
2007 Dodge Ram 3500 Sport
2003 Dodge Ram 3500 ST
2004 Dodge Ram 3500 ST
2005 Dodge Ram 3500 ST
2006 Dodge Ram 3500 ST
2007 Dodge Ram 3500 ST
2007 Dodge Ram 3500 TRX4