{"product_id":"k-n-custom-round-air-filter-14in-od-12in-id-4in-height","title":"K\u0026N Custom Round Air Filter 14in OD 12in ID 4in Height","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eE-3730\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 024844019899\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eK\u0026amp;N E-3730 Custom Round Air Filter 14in OD 12in ID 4in Height\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe K\u0026amp;N E-3730 is a high-flow custom round air filter with 14 inch outer diameter 12 inch inner flange diameter and 4 inch height perfect for custom air intake setups and compatible factory air boxes. Layered oiled cotton gauze media allows more air into the engine for power gains while trapping dirt and debris. Washable and reusable it lasts the life of your vehicle with easy cleaning.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower Increase:\u003c\/strong\u003e More airflow design delivers noticeable power gains in custom and compatible applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Airflow Filtration:\u003c\/strong\u003e Oiled cotton media balances maximum air intake with dirt-trapping efficiency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmissions Legal:\u003c\/strong\u003e Meets regulations in all 50 states for compliant performance upgrades\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Factory Fit:\u003c\/strong\u003e Drops into many OEM air boxes or custom housings without modifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime Warranty:\u003c\/strong\u003e No-Hassle Lifetime Limited Warranty covers the filter for your vehicle's life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eClean every 50,000 miles under normal highway driving for peak performance\u003c\/li\u003e\n\u003cli\u003eWashable design uses K\u0026amp;N cleaning kit for simple maintenance\u003c\/li\u003e\n\u003cli\u003eArrives ready to install in protective individual packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eCentered rubber flange measures 12in ID with 1.75in length for secure seal\u003c\/li\u003e\n\u003cli\u003eCompatible with factory hardware no additional parts needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eCustom Air Intake Systems\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eFactory Air Box Replacements\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose K\u0026amp;N?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTrusted since 1969 for air filtration innovation\u003c\/li\u003e\n\u003cli\u003eProven high-flow technology used by millions of drivers\u003c\/li\u003e\n\u003cli\u003eEngineered precision for reliable fit and long-term durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What vehicles does the E-3730 fit?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Built for universal custom air intakes and drops into compatible factory air boxes check your housing dimensions for 14in OD 12in ID 4in height\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material is used?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Multi-layer oiled cotton gauze with rubber top and centered flange for airtight seal and reusability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty and cleaning schedule?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Backed by No-Hassle Lifetime Limited Warranty cleans every 50,000 miles with K\u0026amp;N kit will not void vehicle warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS Ground or equivalent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Protective box 14 x 14 x 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.3 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"K\u0026N Engineering","offers":[{"title":"Default Title","offer_id":40091346665551,"sku":"KNNE-3730","price":83.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/kn-custom-round-air-filter-14in-od-12in-id-4in-height-kn-engineering.jpg?v=1766993131","url":"https:\/\/www.blackopsautoworks.com\/products\/k-n-custom-round-air-filter-14in-od-12in-id-4in-height","provider":"Black Ops Auto Works","version":"1.0","type":"link"}