{"product_id":"k-n-engineering-e-3988-universal-custom-air-filter-for-harley-davidson-rk-series","title":"K\u0026N Engineering E-3988 Universal Custom Air Filter for Harley-Davidson RK Series","description":"The K\u0026amp;N replacement air filter for RK Series air cleaner assemblies is designed to increase horsepower and acceleration while providing excellent filtration. The air filter is washable and reusable and designed to be used as a replacement air filter for specific K\u0026amp;N RK Series air cleaner assemblies for Harley-Davidson motorcycles. The air filter is covered by the famous K\u0026amp;N Million-Mile Limited Warranty.\nThe K\u0026amp;N replacement air filter for RK Series air cleaner assemblies, designed for Harley-Davidson motorcycles, are designed to increase horsepower and acceleration while providing excellent filtration.\n\u003cul\u003e\n  \u003cli\u003eMillion Mile Limited Warranty®\u003c\/li\u003e\n  \u003cli\u003eMillion Mile Limited Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe K\u0026amp;N Engineering E-3988 universal air filter is specifically designed for Harley-Davidson RK Series air cleaner assemblies, providing an upgrade that enhances both horsepower and acceleration. This oval-shaped filter features a high-flow cotton gauze media that ensures excellent filtration while maximizing airflow to your engine. Its washable and reusable design makes it a cost-effective and environmentally friendly choice for motorcycle enthusiasts seeking improved performance.\u003c\/p\u003e\u003cp\u003eConstructed with durability in mind, the K\u0026amp;N E-3988 air filter is built to withstand the rigors of regular use, offering a long-lasting solution backed by the renowned Million-Mile Limited Warranty. This warranty reflects K\u0026amp;N's confidence in the quality and longevity of their products, giving you peace of mind on every ride. Designed to fit seamlessly into your Harley-Davidson RK Series air cleaner assembly, this filter maintains optimal airflow and filtration efficiency.\u003c\/p\u003e\u003cp\u003eInstallation is straightforward, making it an ideal upgrade for riders looking to boost their motorcycle's performance without extensive modifications. Regular maintenance involves simple cleaning and re-oiling, restoring the filter to peak condition and ensuring consistent performance over time. Whether you're enhancing your motorcycle for daily riding or long-distance touring, the K\u0026amp;N E-3988 air filter is a reliable choice for maximizing engine output while maintaining superior filtration.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDesigned for Harley-Davidson RK Series air cleaner assemblies\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh-flow cotton gauze media for increased airflow and filtration\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWashable and reusable for long-term use\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBacked by K\u0026amp;N's Million-Mile Limited Warranty\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEasy to install with a precise fit for improved performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDurable construction designed to withstand rigorous riding conditions\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbdoy\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbdoy\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"K\u0026N Engineering","offers":[{"title":"Default Title","offer_id":53604382834961,"sku":"E-3988","price":68.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/3830\/0689\/files\/13b18d86053bb596e48380629d3640c3.jpg?v=1779982874","url":"https:\/\/shoprenegade.com\/products\/k-n-engineering-e-3988-universal-custom-air-filter-for-harley-davidson-rk-series","provider":"Renegade Speed by Renegade Racing \u0026 Performance","version":"1.0","type":"link"}