Mishimoto Aluminum Expansion Tank

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

MMRT-SRT-15N

Overview:

The Mishimoto Aluminum Expansion Tank is a premium upgrade designed specifically for Dodge Challenger and Charger models from 2015 to 2023, including the powerful 6.4L and 6.2L Hellcat variants. This tank replaces the factory plastic coolant reservoir, which is prone to discoloration, degradation, and leaks over time. Crafted to enhance both the appearance and durability of your Mopar’s engine bay, this expansion tank offers a sleek, long-lasting solution that complements the aggressive styling of your vehicle.

Ideal for enthusiasts who demand reliability and style, the Mishimoto tank eliminates the dull yellow plastic look with a robust TIG-welded aluminum construction. It also features an innovative internal baffling system with a cold-fill line, removing the need for an external sight glass or tube and maintaining a clean, streamlined appearance.

Key Features:

Engineered to improve both form and function, the Mishimoto Aluminum Expansion Tank offers the following benefits:

• 100% TIG-welded aluminum construction for superior strength and durability
• Available in micro-wrinkle black or natural finish for versatile styling options
• Internal baffling with integrated cold-fill tab eliminates external sight tubes
• Natural finish allows easy customization via powder coating, anodizing, or hydro dipping
• Designed to withstand repeated temperature cycles without cracking or leaking
• Direct fitment for a wide range of Dodge Challenger and Charger models, including Hellcat and Scat Pack trims
• Improves engine bay aesthetics by replacing the factory plastic reservoir
• Includes Mishimoto Lifetime Warranty for long-term peace of mind

Construction & Design:

The Mishimoto expansion tank is crafted from high-grade aluminum, expertly TIG-welded to ensure maximum durability and resistance to heat and pressure. Unlike the factory plastic tank, this aluminum reservoir resists cracking, warping, and discoloration caused by engine heat and coolant chemicals. The internal baffling design not only prevents coolant sloshing during aggressive driving but also incorporates a cold-fill line, allowing coolant to be added easily without compromising the tank’s clean exterior look.

Available in a natural finish, this tank can be customized to match your vehicle’s color scheme through powder coating or hydro dipping, while the micro-wrinkle black option offers a subtle, stealthy appearance. Every detail is engineered to enhance both the performance and visual appeal of your Mopar’s engine bay.

Installation & Fitment:

The Mishimoto Aluminum Expansion Tank is a direct replacement for the factory reservoir on Dodge Challenger and Charger models from 2015 through 2023, including Hellcat, Scat Pack, R/T, and other performance variants. Installation requires no modifications and can be completed with basic hand tools, making it accessible for both professional installers and experienced enthusiasts. The tank fits perfectly in the stock mounting location, ensuring a secure and leak-free setup.

What's Included:

• Mishimoto Aluminum Expansion Tank (micro-wrinkle black or natural finish)
• All necessary mounting hardware
• Mishimoto Lifetime Warranty documentation

Ideal For:

This expansion tank is perfect for Dodge Challenger and Charger owners who want to replace their factory plastic coolant reservoir with a more durable, visually appealing alternative. It is especially suited for enthusiasts who frequently drive their vehicles hard, track their cars, or simply want to maintain a clean and professional engine bay appearance. The tank’s robust construction and stylish design make it an excellent upgrade for daily drivers and performance builds alike.

Fitment Summary

• Dodge Challenger 392 Hemi Scat Pack Shaker (2016)
• Dodge Challenger R/T 392 (2017–2019)
• Dodge Challenger R/T Scat Pack (2016–2023)
• Dodge Challenger R/T Scat Pack Shaker Widebody (2021)
• Dodge Challenger R/T Scat Pack Widebody (2019–2023)
• Dodge Challenger Scat Pack (2015)
• Dodge Challenger SRT 392 (2015)
• Dodge Challenger SRT Demon (2015–2018)
• Dodge Challenger SRT Hellcat (2015–2022)
• Dodge Challenger SRT Hellcat Jailbreak (2023)
• Dodge Challenger SRT Hellcat Redeye (2019–2022)
• Dodge Challenger SRT Hellcat Redeye Jailbreak (2023)
• Dodge Challenger SRT Hellcat Redeye Widebody (2019–2022)
• Dodge Challenger SRT Hellcat Redeye Widebody Jailbreak (2023)
• Dodge Challenger SRT Hellcat Widebody (2018–2022)
• Dodge Challenger SRT Hellcat Widebody Jailbreak (2023)
• Dodge Challenger SRT Jailbreak (2022)
• Dodge Challenger SRT Super Stock (2020–2023)
• Dodge Challenger T/A 392 (2017–2018)
• Dodge Challenger T/A 392 Widebody (2021)
• Dodge Charger Daytona 392 (2017–2018)
• Dodge Charger R/T 392 (2017–2018)
• Dodge Charger R/T Scat Pack (2015–2018)
• Dodge Charger Scat Pack (2019–2023)
• Dodge Charger Scat Pack 392 Widebody (2020)
• Dodge Charger Scat Pack Widebody (2022)
• Dodge Charger SRT 392 (2015–2018)
• Dodge Charger SRT Hellcat (2015–2020)
• Dodge Charger SRT Hellcat Widebody (2020–2023)

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.