Mishimoto Performance Aluminum Radiator

2019–2026 Ram 2500 / 3500 6.7L Cummins Diesel

Part #: MMRAD-RAM-19

Overview

The Mishimoto Performance Aluminum Radiator is a high-quality cooling solution engineered specifically for the 2019 through 2026 Ram 2500 and Ram 3500 trucks equipped with the 6.7L Cummins diesel engine. Designed to replace the factory radiator, this upgrade addresses common issues found in stock radiators such as plastic end tank cracking and coolant leaks under heavy-duty use. With enhanced durability and improved cooling efficiency, this radiator ensures your Ram maintains optimal engine temperatures during demanding towing, hauling, and off-road conditions.

Built for truck owners who require reliable performance and longevity, the Mishimoto radiator offers peace of mind by reducing the risk of overheating and extending the life of your engine’s cooling system. Whether you use your Ram for commercial work, fleet applications, or recreational purposes, this radiator is a robust upgrade that stands up to tough environments.

Key Features

Engineered to deliver superior cooling and durability, the Mishimoto Performance Aluminum Radiator includes the following key benefits:

• Constructed entirely from high-quality aluminum with TIG-welded end tanks and fittings for exceptional strength and leak resistance
• 28% greater coolant capacity compared to the stock radiator, enhancing heat dissipation during heavy loads and extended idling
• Includes replacement bushings to ensure a secure, vibration-free fit even if factory bushings are worn or damaged
• Direct bolt-on fitment for 2019–2026 Ram 2500 and 3500 models with the 6.7L Cummins diesel engine
• Compatible with a wide range of trims including Big Horn, Laramie, Limited, Rebel, Tradesman, and more
• Designed to optimize cooling performance specifically for the 6.7L Cummins diesel powerplant
• Backed by Mishimoto’s industry-leading Lifetime Warranty for long-term reliability and customer confidence

Construction & Design

The Mishimoto radiator is crafted from premium aluminum, chosen for its excellent thermal conductivity and lightweight strength. Unlike stock radiators that use plastic end tanks prone to cracking, this radiator features TIG-welded aluminum end tanks and fittings that provide a durable, leak-resistant seal. This all-aluminum construction not only improves durability but also enhances heat transfer efficiency, helping maintain stable engine temperatures under heavy-duty conditions.

With a 28% increase in coolant volume, the radiator offers greater thermal mass to absorb and dissipate heat more effectively. This design reduces the likelihood of overheating during intense towing, hauling, or prolonged idling, making it an ideal cooling upgrade for work trucks and off-road vehicles alike.

Installation & Fitment

The Mishimoto Performance Aluminum Radiator is a direct factory replacement for the 2019–2026 Ram 2500 and Ram 3500 equipped with the 6.7L Cummins diesel engine. Installation requires no modifications, allowing for a straightforward swap that can be completed by experienced DIYers or professional technicians. The included replacement bushings help secure the radiator firmly in place and minimize vibration, even if the original bushings are worn or damaged.

This radiator fits a broad range of Ram trims including Big Horn, Laramie, Laramie Longhorn, Limited, Limited Longhorn, Lone Star, Rebel, Special Service, Tradesman, and SLT models within the specified years.

What's Included

• Mishimoto Performance Aluminum Radiator
• Replacement bushings for mounting points
• All necessary fittings and hardware for installation

Ideal For

This radiator is perfect for Ram 2500 and 3500 owners who demand enhanced cooling performance and durability from their trucks. It is especially suited for:

• Heavy-duty towing and hauling applications
• Commercial and fleet vehicles requiring reliable cooling under constant use
• Off-road enthusiasts who push their trucks in extreme conditions
• Owners looking to replace aging or damaged stock radiators with a long-lasting upgrade

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.