Mishimoto Expansion Tank

2015–2023 Dodge Challenger / Dodge Charger 6.4L & 6.2L Hellcat

MMRT-SRT-15BK

Overview:

The Mishimoto Expansion Tank is a premium replacement coolant reservoir designed specifically for the 2015 to 2023 Dodge Challenger and Dodge Charger models equipped with the 6.4L and 6.2L Hellcat engines. This high-quality aluminum tank addresses the common issues found with the factory plastic expansion tanks, which are prone to discoloration, degradation, and leaks over time. Beyond improving durability, it significantly enhances the engine bay’s appearance by replacing the dull yellow plastic reservoir with a sleek, black micro-wrinkle finish.

Ideal for Mopar enthusiasts who demand both reliability and style, this expansion tank offers a long-lasting solution that complements the aggressive aesthetics of Dodge’s performance muscle cars. It also features an innovative internal baffling system with a cold-fill line, eliminating the need for external sight glasses or tubes and maintaining a clean, uncluttered look.

Key Features:

The Mishimoto Expansion Tank combines functional upgrades with refined styling to elevate your vehicle’s cooling system:

• Direct fitment for 2015–2023 Dodge Challenger and Charger 6.4L and 6.2L Hellcat engines
• Constructed from TIG-welded aluminum for superior strength and corrosion resistance
• Micro-wrinkle black finish enhances engine bay aesthetics and resists wear
• Internal baffling with integrated cold-fill line eliminates external sight tubes
• Improved durability compared to factory plastic tanks prone to cracking and leaking
• Designed to withstand high temperatures and pressure fluctuations in performance applications
• Compatible with stock cooling system components for hassle-free installation
• Available in natural finish for custom powder coating or hydro dipping
• Backed by the Mishimoto Lifetime Warranty for peace of mind

Construction & Design:

The Mishimoto Expansion Tank is expertly crafted from high-grade aluminum, TIG-welded to ensure a robust, leak-free construction that outperforms the OEM plastic reservoir. The choice of aluminum not only provides superior heat dissipation but also resists the degradation and brittleness that commonly affect plastic tanks over time. The micro-wrinkle black finish is both functional and stylish, offering a textured surface that hides fingerprints and minor scratches while complementing the aggressive styling of Dodge muscle cars.

Internally, the tank features a baffling system engineered to reduce coolant sloshing and maintain consistent fluid levels during spirited driving. The integrated cold-fill line within the baffling allows for easy coolant top-off without compromising the tank’s sleek exterior design, eliminating the need for unsightly external sight glasses or tubes.

Installation & Fitment:

Installation of the Mishimoto Expansion Tank is straightforward and designed to be a direct replacement for the factory reservoir on 2015–2023 Dodge Challenger and Charger models with 6.4L and 6.2L Hellcat engines. No modifications or special tools are required, making it an ideal upgrade for enthusiasts seeking improved reliability and aesthetics without complicated installation procedures. The tank fits seamlessly into the stock mounting points and connects with existing coolant lines, ensuring a secure and leak-free fit.

What's Included:

• Mishimoto Aluminum Expansion Tank (Micro-Wrinkle Black Finish)
• All necessary mounting hardware
• Detailed installation instructions

Ideal For:

This expansion tank is perfect for Dodge Challenger and Charger owners who want to replace the factory plastic coolant reservoir with a more durable, visually appealing component. It is especially suited for enthusiasts who regularly push their vehicles in performance driving scenarios and require a reliable cooling system upgrade that complements their car’s aggressive styling. Additionally, those interested in customizing their engine bay will appreciate the natural finish option for custom coatings.

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.