Roush 1996-2018 Ford Mustang Polished Billet Radiator Cap - 421258Find parts that fit my vehicle

Dress up the engine compartment of your 1996-2018 Mustang with the ROUSH Billet Radiator Cap. The billet radiator caps are made from high quality billet aluminum for its appearance, corrosion resistance and strength to weight ratio. The radiator caps are manufactured in the USA using high precision CNC machining for precise fitment. Once machined, the radiator caps are polished for a sleek appearance. The ROUSH billet radiator caps slide over the existing cap and are held in place with automotive grade double sided tape.

Cooling products are essential components to keeping your vehicle running at optimal temperatures. Whether you are looking for a radiator, fans, or oil coolers, we've got you covered with the top brands like Mishimoto, Koyorad, Skunk2, Moroso, and more!

Radiator caps are designed to keep coolant from leaking out of your radiator. It is important to make sure your radiator cap is in good condition so that it can withstand coolant pressure under hot temperatures. If your vehicle is leaking coolant from its radiator cap, replace it as soon as possible.

Built at our own state-of-the-art manufacturing and testing facilities, ROUSH parts and vehicles will get you to the intersection of style and performance.

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