Mishimoto Aluminum Expansion Tank

2015–2023 Dodge Challenger / Charger 6.2L Hellcat & 6.4L 392

Part #: MMRT-SRT-15N

Overview

The Mishimoto Aluminum Expansion Tank is a premium, direct-fit upgrade designed for Dodge Challenger and Charger models from 2015 through 2023, including the high-performance 6.2L Hellcat and 6.4L 392 engines. This tank replaces the factory plastic coolant reservoir, which is prone to discoloration, cracking, and leaks over time. Crafted to enhance both durability and engine bay aesthetics, the Mishimoto tank offers a sleek, long-lasting solution that complements the aggressive styling of Mopar muscle cars.

Ideal for enthusiasts who demand reliability and a clean engine bay appearance, this expansion tank eliminates the dull, yellowed plastic look with a robust TIG-welded aluminum construction. It features an innovative internal baffling system with a cold-fill line, removing the need for external sight tubes and maintaining a streamlined, professional look.

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 long-lasting durability
• Available in natural or micro-wrinkle black finish to suit different styling preferences
• Internal baffling with integrated cold-fill tab eliminates external sight tubes for a clean appearance
• Natural finish allows easy customization through powder coating, anodizing, or hydro dipping
• Designed to withstand repeated temperature cycles without cracking, warping, or leaking
• Direct bolt-on fitment for Dodge Challenger and Charger models from 2015 to 2023, including Hellcat, Scat Pack, R/T, and other performance trims
• Improves engine bay aesthetics by replacing the factory plastic reservoir with a sleek aluminum tank
• Includes Mishimoto Lifetime Warranty for long-term peace of mind

Construction & Design

The Mishimoto Aluminum Expansion Tank is crafted from high-grade aluminum and 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. Its internal baffling design prevents coolant sloshing during aggressive driving and incorporates a cold-fill line, allowing coolant to be added easily without compromising the tank’s clean exterior look.

Available in a natural finish, the 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 coolant 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 (available in 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 and 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.