D1-Spec brand high pressure radiator cap. Universal, fits most vehicles. Actual cap is made from stainless steel. However it comes with an attractive, show quality anodized aluminum cover. Great looking and also helps give a better grip on the cap itself Uses a big head stopper, check the picture below to see the difference between the big and small head caps. If you need the small head cap please check our other listings. If you are not sure what kind you need, you will need to check your current radiator cap by removing it and looking at the bottom. Make sure your engine is COLD. Never ever remove a radiator cap when your engine is hot!

***IMPORTANT*** Cap is rated at 1.3 which means this cap will maintain 1.3 bar pressure in your cooling system. Once it reaches 1.3 bar it will allow coolant to flow into your overflow tank. Many factory systems are rated lower (usually 1.1 bar or so). Please make sure the rest of your cars cooling system is able to withstand 1.3 bar pressure. If not, increasing the pressure may spring a leak in a weak part of the cooling system. If you are not sure, please check with your favorite car forum or neighborhood guru before buying.

Check your radiator cap before ordering. We can no longer accept returns if you order the wrong one! This listing is for a BIG head stopper type cap.
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