Mishimoto MMRT-MUS-15EBK Black Aluminum Coolant Expansion Tank for 15-23 Ford

Vehicle Fitment

• 2015-2023 Ford Mustang (EcoBoost, V6, GT, GT Premium, Bullitt, Mach 1)

Features

• Direct-fit aluminum coolant expansion tank engineered for S550 Mustang
• Internal baffles prevent coolant starvation under high G-loads
• Clear sight glass for accurate coolant level monitoring
• Black finish enhances engine bay aesthetics
• Overflow nipple allows installation of additional NHRA-compliant reservoir
• Fits with stock expansion tank cap for straightforward installation
• Durable TIG-welded construction resists cracking from heat cycling
• Includes Mishimoto Lifetime Warranty

Specifications

• Part Number: MMRT-MUS-15EBK
• Material: 6061 aluminum
• Finish: Black powder-coat
• Chassis Code: S550
• Compatible Engines: 2.3L EcoBoost, 3.7L Cyclone V6, 5.0L Coyote V8
• Mounting Location: OEM coolant expansion tank position
• Torque Spec: ~22 in-lbs (2.5 Nm) for clamps
• Installation Time: ~1 hour

Included Components

• 1x Aluminum coolant expansion tank (black)
• 1x Overflow hose
• 3x Worm-gear clamps
• Mounting hardware
• Mishimoto Lifetime Warranty documentation

Product Description

The Mishimoto MMRT-MUS-15EBK Black Aluminum Coolant Expansion Tank is a premium upgrade designed specifically for 2015-2023 Ford Mustang models with EcoBoost, V6, and V8 engines. Constructed from TIG-welded 6061 aluminum with a sleek black finish, this expansion tank replaces the factory plastic reservoir with a more durable and visually appealing option. Internal baffles help keep coolant near the overflow port during aggressive driving, reducing the risk of air entering the cooling system and ensuring consistent coolant delivery even under spirited cornering or acceleration.

Installation is simple and typically completed in about an hour using the stock mounting location and overflow cap. A clear sight glass makes it easy to check coolant levels at a glance, and an overflow nipple provides the option to connect an additional NHRA-compliant reservoir if required. Backed by Mishimoto's Lifetime Warranty, the MMRT-MUS-15EBK offers enhanced cooling performance and improved engine bay style for Mustang enthusiasts seeking both form and function.