{"product_id":"nu-2241st-uni-filter-air-filter-for-yamaha-yz250-1978-yz-250","title":"NU-2241ST Uni-Filter Air Filter for Yamaha YZ250 1978 YZ 250","description":"\u003ch2\u003eAir Filter for Yamaha YZ250\u003c\/h2\u003e\u003cp\u003eThis Uni-Filter air filter (NU-2241ST) replaces the factory filter on 1978 Yamaha YZ 250 models, trapping dust and debris before it reaches the carburetor.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Uni-Filter air filter is a direct-fit replacement for the 1978 Yamaha YZ 250, engineered to keep dirt, sand, and dust out of the intake. Riders rebuilding or maintaining a vintage YZ250 rely on a fresh air filter to protect the engine and hold consistent airflow. The NU-2241ST filter is built for off-road use where clean intake air matters most.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDual-layer foam construction traps fine dust while maintaining airflow\u003c\/li\u003e\n\u003cli\u003eDesigned as a direct replacement for the factory filter cage\u003c\/li\u003e\n\u003cli\u003eWashable and re-oilable for repeated service intervals\u003c\/li\u003e\n\u003cli\u003eResists fuel and oil breakdown common in two-stroke intake systems\u003c\/li\u003e\n\u003cli\u003eSeals against the airbox to limit unfiltered air bypass\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha YZ 250 (1978)\u003c\/li\u003e\n\u003cli\u003efor Yamaha YZ250\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMotocross and trail riding on dusty tracks\u003c\/li\u003e\n\u003cli\u003eRoutine airbox service on vintage two-stroke builds\u003c\/li\u003e\n\u003cli\u003eRestoration projects returning a YZ250 to riding condition\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNU-2241ST\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFoam air filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUni-Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Yamaha YZ 250 (1978)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How often should this air filter be cleaned? \u003cstrong\u003eA:\u003c\/strong\u003e Clean and re-oil it after every few rides in dusty conditions, or more often if you ride in sand or loose dirt. A clogged filter restricts airflow and can affect jetting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this filter need oil before use? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, foam filters should be oiled with a proper foam filter oil to catch fine dust particles. Install it dry only if the manufacturer instructions specify otherwise.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":51143986741334,"sku":"OO1C24836","price":64.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_b4bebb65-aadd-4d20-bd0b-14ec6a0852fe.jpg?v=1794567364","url":"https:\/\/www.solidspare.com\/products\/nu-2241st-uni-filter-air-filter-for-yamaha-yz250-1978-yz-250","provider":"Solid Spare","version":"1.0","type":"link"}