Granatelli Motor Sports Radiator Expansion Tank 510100-B

Granatelli Motor Sports Mustang Coolant Expansion Tank – Wrinkle Black Aluminum

Upgrade your 2015–2023 Mustang engine bay with the Granatelli Motor Sports Radiator Expansion Tank, engineered for owners who want performance, durability, and a cleaner show-quality appearance. Unlike the factory plastic coolant reservoir, this aluminum expansion tank delivers a stronger, more aggressive look while cleaning up one of the least attractive areas under the hood.

Designed for 2015–2023 Mustang V8, V6, EcoBoost, and Shelby GT350 applications, this tank is built as a direct-fit upgrade with a premium wrinkle black powder coat finish. The result is a coolant expansion tank that looks right at home in a performance engine bay and gives the vehicle a sharper, more finished appearance.

Why Choose the Granatelli Mustang Expansion Tank?

• Superior Upgrade Over the Factory Plastic Tank: The factory coolant reservoir gets the job done, but visually it leaves a lot to be desired. The Granatelli aluminum expansion tank replaces the plain OEM-style plastic look with a cleaner, stronger, performance-inspired design.
• Premium Aluminum Construction: Built from aluminum for added strength and durability, this tank is designed for Mustang owners who expect more than just a basic replacement part.
• Wrinkle Black Powder Coat Finish: The textured black finish gives the tank a rugged, high-end appearance that blends perfectly with modern Mustang engine bays, aftermarket dress-up parts, and performance builds.
• Direct-Fit Design: Engineered for 2015–2023 Mustang V8, V6, EcoBoost, and Shelby GT350 models, making it a clean upgrade without the guesswork of a universal tank.
• Cleaner Engine Bay Appearance: The Granatelli design eliminates the bulky factory “bubble tank” look and helps maintain the tapered, aggressive styling found throughout the Mustang engine compartment.
• Perfect for Street, Show, and Performance Builds: Whether the vehicle is a daily-driven Mustang, weekend cruiser, track car, or show build, this expansion tank adds the kind of detail that customers notice immediately.
• Custom Laser Engraving Available: This is where the tank becomes more than just another engine bay upgrade. Customers can add their own name, shop logo, race team name, car club logo, patriotic design, snake graphic, skull design, or custom artwork. It gives Mustang owners the chance to show their creativity and make their build stand out instead of settling for the same off-the-shelf part everyone else has.
• Expansion Tank Price: $423 out the door with custom laser engraving included.

Built for Mustang Owners Who Care About the Details

A great engine bay is built one detail at a time. The Granatelli Motor Sports expansion tank gives Mustang owners a functional coolant reservoir upgrade while improving the overall presentation under the hood. The wrinkle black finish offers a clean, aggressive look, while the aluminum construction gives the part a more premium feel than the factory reservoir.

For customers building a clean street car, a detailed show vehicle, or a performance-focused Mustang, this tank is a simple upgrade that delivers a major visual improvement. Add custom laser engraving, and the tank becomes a personalized centerpiece in the engine bay. It lets the customer put their own signature on the build — because let’s be honest, nobody spends money under the hood just to look exactly like the car parked next to them.

Fitment

• 2015–2023 Ford Mustang V8
• 2015–2023 Ford Mustang V6
• 2015–2023 Ford Mustang EcoBoost
• 2015–2023 Shelby GT350

Product Highlights

• Coolant expansion tank / radiator expansion tank
• Direct-fit Mustang application
• Aluminum construction
• Wrinkle black powder coat finish
• Custom laser engraving available
• Allows customers to personalize their engine bay with names, logos, graphics, or custom artwork
• Ideal for performance, street, track, and show builds

Bottom line: If you are replacing the factory tank, do it once and do it right. The Granatelli Motor Sports Mustang expansion tank gives customers a cleaner look, better material quality, and the option to personalize their engine bay with custom laser engraving.