Mounting hole diameter: 60 mm, universal fittings for car air intake piping The high-flow air filter can reduce engine air intake resistance and improve air intake per unit of time and volumetric efficiency when the engine is running. Made with high-quality material to ensure filtration efficiency, gain instant power by improving the filtration process. The fine mesh increases the amount of airflow, straightens the flow, and stops drawing in hot air from the high-temperature engine compartment. Washable and reusable, maintain performance by regularly removing and soaking the filter element in paper/foam filter oil, allowing the excess to drain, and reassembling.