Mishimoto Stock Replacement Oil Cooler

2007–2024 Dodge Ram 2500/3500 5.9L & 6.7L Cummins Diesel

Part #: MMOC-RAM-07

Overview

The Mishimoto Stock Replacement Oil Cooler is a precision-engineered direct replacement designed specifically for Dodge Ram 2500 and 3500 trucks equipped with the 5.9L and 6.7L Cummins diesel engines from 2007 through 2024. This essential component maintains optimal engine oil temperatures by efficiently transferring heat to the engine coolant, helping to prevent oil overheating and extend engine life.

Whether your Ram is used for daily driving, heavy towing, or demanding work applications, maintaining proper oil temperature is critical to protecting internal engine components from wear and lubrication loss. Mishimoto’s oil cooler restores your truck’s oil cooling system to OEM standards, making it an ideal solution for trucks with clogged, leaking, or worn stock coolers.

Backed by Mishimoto’s lifetime warranty, this replacement cooler offers reliable, long-term performance and peace of mind for Cummins-powered Dodge Ram owners.

Key Features

Engineered to meet or exceed OEM specifications, the Mishimoto Stock Replacement Oil Cooler delivers dependable cooling performance and durability. Key features include:

• Direct-fit replacement for 2007–2024 Dodge Ram 2500 and 3500 with 5.9L and 6.7L Cummins diesel engines
• Restores efficient oil-to-coolant heat transfer to prevent oil overheating and degradation
• Includes all necessary seals and gaskets for a complete, leak-free installation
• Manufactured to OEM quality standards for reliable daily driving and heavy-duty use
• Prevents engine wear caused by oil thinning and loss of lubrication under high temperatures
• Compatible with a wide range of Ram trims including Laramie, SLT, ST, SXT, Big Horn, Longhorn, Limited, Lone Star, Outdoorsman, Rebel, and Tradesman
• Backed by Mishimoto’s lifetime warranty for long-term durability and customer confidence

Construction & Design

The Mishimoto oil cooler is crafted with high-quality materials and precision engineering to match the robust construction of the original equipment. Its liquid-to-liquid design efficiently uses engine coolant to dissipate heat from the engine oil, maintaining optimal operating temperatures even under heavy load or extreme conditions.

Advanced manufacturing processes ensure resistance to corrosion and leaks, while rigorous quality control guarantees a perfect fit and reliable performance. This durable construction makes it a trusted replacement part for Cummins-powered Dodge Rams, built to withstand years of demanding use.

Installation & Fitment

This oil cooler is a direct bolt-on replacement for the factory unit, requiring no modifications or special tools. It comes complete with new seals and gaskets to ensure a secure, leak-free fit. Installation can typically be completed with basic mechanical knowledge and standard hand tools, making it accessible for both professional technicians and experienced DIY enthusiasts.

Fitment covers the following models and years:

• 2007–2010 Dodge Ram 2500 6.7L Diesel
• 2007–2010 Dodge Ram 3500 6.7L Diesel
• 2009 Dodge Ram 2500 5.9L Diesel
• 2011–2024 Ram 2500 6.7L Diesel
• 2011–2024 Ram 3500 6.7L Diesel

What's Included

• Mishimoto stock replacement oil cooler
• New seals and gaskets for installation
• Installation hardware as required
• Lifetime warranty documentation

Ideal For

This oil cooler is ideal for Dodge Ram 2500 and 3500 owners who need to replace a worn, clogged, or leaking stock oil cooler to maintain proper engine oil temperatures. It is perfectly suited for daily drivers, work trucks, and towing vehicles powered by the 5.9L or 6.7L Cummins diesel engines seeking a reliable, OEM-quality replacement at an affordable price point.

Mishimoto is a performance cooling brand offering aluminum radiators, intercoolers, oil coolers, hoses, and supporting hardware built to manage heat on hard-driven street and track vehicles. For boosted setups and towing/off-road rigs alike, Mishimoto upgrades are designed to increase cooling capacity and reliability where factory systems can become a limitation.