Mishimoto Performance Aluminum Radiator

2003–2009 Dodge Ram 1500 / 2500 / 3500 5.9L & 6.7L Diesel

Part #: MMRAD-RAM-03

Overview

The Mishimoto Performance Aluminum Radiator is a high-quality cooling upgrade designed specifically for Dodge Ram trucks equipped with 5.9L and 6.7L Cummins diesel engines from 2003 to 2009. This radiator replaces the factory unit to provide superior cooling efficiency, ensuring your engine maintains optimal temperatures even under heavy towing, hauling, or extreme heat conditions. Built to withstand the demands of diesel powertrains, it helps prevent overheating and extends engine life, making it an essential upgrade for Ram owners who rely on their trucks for tough jobs and daily driving alike.

Factory radiators often fall short when managing the heat generated by high torque diesel engines, which can lead to performance issues and premature wear. Mishimoto’s radiator addresses these challenges with advanced engineering and premium materials, delivering reliable cooling performance that keeps your Cummins engine running strong.

Key Features

Engineered for durability and maximum cooling efficiency, the Mishimoto Performance Aluminum Radiator offers the following benefits:

• Lightweight two-row core made from 100% brazed aluminum for superior heat dissipation
• Strong TIG-welded aluminum end tanks for enhanced structural integrity and long-lasting durability
• Direct factory fit design for a seamless replacement with no cutting or modifications required
• Optimized core design to maximize coolant flow and cooling surface area
• Includes a magnetic drain plug to capture metal particles and help extend engine life
• Compatible with Dodge Ram 2500 and 3500 models (2003–2009) and Ram 1500 (2008–2009) equipped with 5.9L or 6.7L diesel engines
• Backed by Mishimoto’s industry-leading lifetime warranty for peace of mind

Construction & Design

This radiator is constructed entirely from premium aluminum, chosen for its excellent thermal conductivity and resistance to corrosion. The two-row core is fully brazed, creating a leak-proof and robust structure capable of handling the stresses of heavy-duty use. TIG welding on the end tanks further enhances durability, preventing cracks and leaks that can occur under high pressure and temperature fluctuations common in diesel applications.

Compared to traditional copper-brass radiators, this aluminum design reduces overall weight, contributing to improved vehicle performance and fuel efficiency. The radiator’s construction ensures efficient heat transfer, keeping your engine cooler and more reliable during demanding driving conditions.

Installation & Fitment

The Mishimoto Performance Aluminum Radiator is designed as a direct factory replacement for easy installation. It fits perfectly into the factory mounting points of the specified Dodge Ram models without requiring any cutting, trimming, or additional modifications. This straightforward installation makes it an excellent choice for both professional mechanics and DIY enthusiasts seeking a hassle-free upgrade to their truck’s cooling system.

What's Included

• Mishimoto Performance Aluminum Radiator
• Magnetic drain plug
• Lifetime warranty documentation

Ideal For

This radiator is ideal for Dodge Ram owners who demand enhanced cooling performance and reliability from their trucks. It is especially suited for those who frequently tow heavy loads, haul cargo, or operate their vehicles in hot climates. Additionally, it serves as a valuable upgrade for anyone looking to improve engine longevity by preventing overheating and maintaining consistent operating temperatures under heavy-duty conditions.

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.