Mishimoto Aluminum Degas Tank

2013–2018 Ram 2500 / 3500 6.7L Diesel

Part #: MMRT-RAM-13MWBK

Overview

The Mishimoto Aluminum Degas Tank is a premium cooling system upgrade designed specifically for 2013 to 2018 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine. This direct replacement tank upgrades the factory plastic expansion tank with a durable, lightweight aluminum construction that enhances coolant management and system reliability.

Ideal for diesel enthusiasts and heavy-duty truck owners, the Mishimoto degas tank addresses common issues such as unclear coolant levels caused by dirty or opaque factory tanks. It maintains all stock tank functions while delivering improved performance, durability, and a clean under-hood appearance with its micro-wrinkle black powder coat finish.

Additionally, this degas tank provides critical clearance for large single-turbo setups, preventing interference without the need for trimming or modifications, making it a perfect upgrade for trucks running aftermarket turbochargers or heavy towing applications.

Key Features

Engineered for durability and enhanced cooling system performance, the Mishimoto Aluminum Degas Tank offers the following key features:

• Constructed from lightweight, corrosion-resistant aluminum for long-lasting durability and superior heat dissipation
• Micro-wrinkle black powder coat finish for a stealthy, custom appearance and added protection against wear
• OEM-quality coolant level sensor included for accurate low coolant warnings on the dashboard
• Internal baffling design to prevent coolant sloshing and maintain consistent fluid levels during aggressive driving or off-road use
• Designed with ample clearance to accommodate large single-turbo setups without trimming or modifications
• Direct bolt-on replacement for the factory plastic expansion tank, ensuring seamless integration
• Improves cooling system reliability under heavy-duty, towing, and off-road conditions
• Backed by Mishimoto’s Lifetime Warranty for peace of mind

Construction & Design

The Mishimoto degas tank is crafted from high-grade aluminum, selected for its excellent heat dissipation properties and superior resistance to corrosion compared to plastic. This robust construction ensures the tank withstands the demanding environments faced by diesel trucks, including extreme temperatures, vibrations, and rough terrain.

The micro-wrinkle black powder coat finish not only enhances the tank’s visual appeal with a sleek, professional look but also provides an additional protective barrier against environmental damage and wear. Internally, the tank features strategically placed baffling to stabilize coolant flow, prevent air pockets, and maintain consistent coolant levels for optimal engine cooling.

Installation & Fitment

This degas tank is designed as a direct replacement for the factory expansion tank on 2013–2018 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins engine. Installation is straightforward and requires no modifications or trimming, even for trucks with large single-turbo setups. The included OEM-quality coolant level sensor integrates seamlessly with the vehicle’s existing wiring harness, preserving all factory warning functions.

Installation can typically be completed using basic hand tools, making it accessible for professional mechanics and experienced DIY enthusiasts alike.

What's Included

• Mishimoto Aluminum Degas Tank with Micro-Wrinkle Black Finish
• OEM-quality coolant level sensor
• All necessary mounting hardware
• Installation instructions

Ideal For

This degas tank is perfect for Ram 2500 and 3500 owners with the 6.7L Cummins diesel engine who want to upgrade their cooling system with a durable, high-performance component. It is especially suited for:

• Diesel truck enthusiasts seeking improved coolant management and system reliability
• Owners running large single-turbo setups requiring additional clearance
• Drivers who frequently tow or haul heavy loads and need enhanced cooling stability
• Those looking to replace aging or damaged factory plastic expansion tanks
• Anyone wanting a clean, custom look under the hood with a micro-wrinkle black finish

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.