Edelbrock Universal Pro-Flo Conical Air Filter #43643 is an economical way to ensure your engine is getting clean air, without the expense of buying a new filter every few thousand miles. Its constructed for superior filtration and air flow performance. Features triple chrome plated trim for a show-quality look. Universal Fit Series is also designed with three inlet adapter rings for use on 3", 3.5" and 4" inlet tube systems. It also feature the Edelbrock exclusive Pro-Charge clean strip for easy maintenance. The Pro-Charge strip will let you know when it's time to clean your filter. Rated for use engines making less than 470 horsepower. Each filter comes pre-oiled and is washable and reusable. Use Edelbrock Pro-Charge Cleaning Kit #43600 to clean and re-oil.