{"product_id":"k-n-universal-clamp-on-air-filter-2-1-16in-flg-3-1-2-od-4in-h","title":"K\u0026N RA-0500 Round Cotton Gauze Universal Clamp-On Air Filter, 2-1\/16in FLG","description":"\u003ch4\u003eVehicle Fitment\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eUniversal - not vehicle-specific; designed for a wide range of applications including racing vehicles, small engines, generators, snowmobiles, and tractors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment Notes\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eClamp-on design fits carburetor or intake necks matching the flange diameter; rubber flange can stretch up to 1\/16 in. to accommodate in-between sizes\u003c\/li\u003e \u003cli\u003eNot a direct factory drop-in for any specific make or model - confirm intake neck diameter matches before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFeatures\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eFour layers of premium cotton gauze treated with a specially designed tacking agent\u003c\/li\u003e \u003cli\u003eIntricate filter media mesh designed to block and trap harmful contaminants\u003c\/li\u003e \u003cli\u003eUltra-strong molded pliable rubber flange absorbs vibration for a secure attachment\u003c\/li\u003e \u003cli\u003eFlange can stretch up to 1\/16 in. (1.5mm) to fit in-between sizes\u003c\/li\u003e \u003cli\u003eWashable and reusable, built to last with rugged, durable construction\u003c\/li\u003e \u003cli\u003eSuited to a wide variety of equipment including racing vehicles, RC cars, generators, snowmobiles, and tractors\u003c\/li\u003e \u003cli\u003ePre-oiled and ready for easy installation\u003c\/li\u003e \u003cli\u003eBacked by K\u0026amp;N's warranty against defects in materials and workmanship\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eShape: Round\u003c\/li\u003e \u003cli\u003eFilter Material: Cotton gauze\u003c\/li\u003e \u003cli\u003eFlange Diameter: 2.0625 in.\u003c\/li\u003e \u003cli\u003eOutside Diameter: 3.5 in.\u003c\/li\u003e \u003cli\u003eFilter Height: 4 in.\u003c\/li\u003e \u003cli\u003eFlange Length: 0.875 in.\u003c\/li\u003e \u003cli\u003eFitment Type: Universal clamp-on\u003c\/li\u003e \u003cli\u003eRecommended Cleaning Interval (automotive use): Approximately every 75,000 miles \/ 5 years under normal highway conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eIncluded Components\u003c\/h4\u003e\u003cul\u003e \u003cli\u003e1x K\u0026amp;N RA-0500 Universal Clamp-On Air Filter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Description\u003c\/h4\u003e\u003cp\u003e The K\u0026amp;N RA-0500 is a universal clamp-on air filter designed to fit directly onto a carburetor throat or intake neck rather than a single vehicle's factory air box. Its 2.0625 in. flange diameter and pliable rubber construction make it a flexible option across a wide range of equipment, from racing engines to small engines like generators, snowmobiles, and tractors.\u003c\/p\u003e\u003cp\u003e Built from four layers of cotton gauze treated with K\u0026amp;N's tacking agent, the RA-0500 is engineered to trap contaminants while allowing strong airflow to the engine. The rubber flange is designed to absorb vibration for a secure hold and can stretch slightly to accommodate intake necks that fall between standard sizes, adding some flexibility for custom or non-standard applications.\u003c\/p\u003e\u003cp\u003e This filter is a good fit for builders and enthusiasts working on carbureted engines, small equipment, or custom intake setups who need a compact, universal round filter rather than a factory-specific replacement. Because it's a clamp-on universal filter, confirm your intake neck's diameter matches the 2.0625 in. flange before ordering, and note that the recommended 75,000-mile cleaning interval applies to automotive use - smaller engines and equipment may require more frequent servicing depending on operating conditions.\u003c\/p\u003e\u003cmeta name=\"description\" content=\"Enhance engine performance with the K\u0026amp;N RA-0500 Universal Air Filter. Durable, washable, and designed for versatile applications.\"\u003e\u003cmeta name=\"keywords\" content=\"K\u0026amp;N air filter, universal clamp-on filter, cotton gauze air filter, racing vehicle filter, small engine air filter, washable air filter, high flow air filter, durable automotive filter, pre-oiled air filter, vibration absorbing flange\"\u003e","brand":"K\u0026N Engineering","offers":[{"title":"Default Title","offer_id":53362935923007,"sku":"KNNRA-0500","price":58.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/7308\/9343\/files\/89bb2ab3-f333-4007-9c65-014193873aff-800.jpg?v=1780090174","url":"https:\/\/wcaperformance.com\/products\/k-n-universal-clamp-on-air-filter-2-1-16in-flg-3-1-2-od-4in-h","provider":"WCA Performance","version":"1.0","type":"link"}