Spectre HPR (high performance replacement) air filters are designed to provide you with more horsepower and quicker acceleration by allowing more air flow into your engine than ordinary paper filters. Use a Spectre AccuCharge cleaning and re-oiling kit to maintain your Spectre air filter in like new condition for the life of your car. Outside Diameter 9.063", Inside Diameter 7.75", Height 2", Filter material Non-woven Synthetic, Weight 0.7lbs