Mishimoto Aluminum Coolant Expansion Tank for 2015-2023 Ford Mustang - Black (3.7L / 5.0L) MMRT-MUS-15EBK

Fits 2015-2023 Ford Mustang (EcoBoost, V6, GT, Bullitt, Mach 1, and Shelby GT350/GT500).

Replace the failure-prone factory plastic reservoir with the Mishimoto Aluminum Coolant Expansion Tank. Engineered as a direct-fit upgrade, this tank is constructed from durable, TIG-welded aluminum to withstand the constant temperature cycles that cause OEM plastic units to crack and leak. The internal baffled design ensures coolant stays near the overflow ports during high-G cornering, braking, and acceleration, preventing air from entering the cooling system.

This tank features a built-in sight glass for quick, accurate hot and cold level checks and includes an overflow nipple on the fill neck to facilitate additional tank plumbing for NHRA legality. It is designed for a simple installation in under one hour using the factory mounting points and is compatible with the stock expansion tank cap.

• Direct fit for 2015-2023 Ford Mustang (all trims)
• Internal baffles prevent coolant sloshing and starvation
• Durable TIG-welded aluminum construction in a black anodized finish
• Integrated sight glass for easy fluid level monitoring
• Compatible with OEM expansion tank cap
• Includes overflow nipple for NHRA-legal requirements
• Manufacturer Part Number: MMRT-MUS-15EBK
• Mishimoto Lifetime Warranty