{"product_id":"k-n-replacement-air-filter-ac-4004","title":"K\u0026N Replacement Air Filter AC-4004","description":"\u003cp\u003eHigh-flow reusable air filter for compact engine applications with extended service intervals. Cotton gauze construction maintains factory airflow whilst reducing total cost of ownership.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReusable cotton gauze media with 2 micron filtration efficiency rating\u003c\/li\u003e\n\u003cli\u003eHigh-flow design ensures factory-equivalent airflow and engine performance\u003c\/li\u003e\n\u003cli\u003eRed oil charge optimises particle capture whilst maintaining unrestricted intake\u003c\/li\u003e\n\u003cli\u003eService life up to 100,000 miles with regular cleaning and maintenance\u003c\/li\u003e\n\u003cli\u003eDrop-in replacement fitment with direct mounting to OEM airbox assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReplacement filter for AC-4004 mounting position across compatible compact engine platforms.\u003c\/p\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":56617151693180,"sku":"AC-4004","price":67.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/9208\/4867\/files\/AC-4004.jpg?v=1775832529","url":"https:\/\/fdracing.co.uk\/products\/k-n-replacement-air-filter-ac-4004","provider":"FD Racing","version":"1.0","type":"link"}