Dodge Ram Oil Cooler - Mishimoto - MM - `03-`07. A direct-fit replacement oil cooler designed for the 2003–2007 Dodge Ram 5.9L Cummins that restores proper oil-to-coolant heat transfer and replaces worn seals.

Oil is the lifeblood of a diesel engine, and a clogged or leaking oil cooler reduces oil’s ability to dissipate heat. This Mishimoto stock-style replacement oil cooler is built to meet OEM quality standards and includes the gaskets and new seals required for a compatible installation. It replaces clogged or failing factory units to restore oil cooling capability and help protect bearings, pistons, and other critical components during normal driving. The unit is a direct fit for 2003–2007 5.9L Cummins trucks and carries Mishimoto’s reputation for durable replacement parts.

Features

• Direct-fit replacement for 2003–2007 Dodge Ram 5.9L Cummins
• Includes all gaskets and new seals for straightforward installation
• Stock-style design that meets OEM quality standards
• Replaces clogged or leaking factory oil coolers
• Mishimoto part number MMOC-RAM-03 and backed by Mishimoto Lifetime Warranty

If you have questions or want help confirming fitment, call us directly — we’re happy to assist. We offer professional installation and customization services at our Austin, Texas and Los Angeles, California-area shops. Call 512-982-9393 (TX) or 562-981-6800 (CA) to schedule service or ask about this cooler. If you’re considering multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov