{"product_id":"k-n-engineering-e-3730-custom-round-high-flow-air-filter","title":"K\u0026N Engineering E-3730 Custom Round High-Flow Air Filter","description":"K\u0026amp;N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K\u0026amp;N's 10-Year\/Million Mile Limited Warranty. K\u0026amp;N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K\u0026amp;N's most popular product!\nK\u0026amp;N's replacement High-Flow Air Filters are designed to increase horsepower while providing exceptional engine protection, and are covered by K\u0026amp;N's No-Hassle Lifetime Limited Warranty.\nAssociated products: 25-3750 Air Filter Foam Wrap, 25-5500 Air Filter Foam Wrap, E-3750PK Air Filter Wrap, E-3750PY Air Filter Wrap, 99-5000 Filter Care Service Kit Aerosol\n\u003cul\u003e\n  \u003cli\u003eWill not void vehicle warranty\u003c\/li\u003e\n  \u003cli\u003eMillion Mile Limited Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUpgrade your vehicle’s air intake system with the K\u0026amp;N Engineering E-3730 Custom Round High-Flow Air Filter. Designed as a reusable replacement filter, it uses layered, oiled cotton media to promote increased airflow while capturing dirt and other airborne contaminants. The high-flow design supports improved engine breathing and is engineered to help increase horsepower without requiring major modifications to the factory or custom air intake system.\u003c\/p\u003e\u003cp\u003eThe K\u0026amp;N E-3730 is washable, reusable, and built to serve throughout the life of your vehicle when properly maintained. Its durable construction provides exceptional engine protection while reducing the need for frequent disposable filter replacements. The filter is compatible with K\u0026amp;N Filter Care Service Kit Aerosol and select K\u0026amp;N Air Filter Foam Wrap products, including 25-3750, 25-5500, E-3750PK, and E-3750PY. Installation and servicing should follow the vehicle or intake manufacturer’s recommendations.\u003c\/p\u003e\u003cp\u003eThis automotive air filter is backed by K\u0026amp;N’s 10-Year\/Million Mile Limited Warranty and is designed not to void the vehicle manufacturer’s warranty when properly installed and maintained. The K\u0026amp;N Engineering E-3730 is intended for custom round air intake applications and should be matched to the correct intake housing and sealing surface before installation. California emissions approval is not specified for this application; verify local requirements and vehicle fitment before purchase.\u003c\/p\u003e\u003ch3\u003eProduct Specifications and Technical Data\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: K\u0026amp;N Engineering\u003c\/li\u003e\n\u003cli\u003ePart Number: E-3730\u003c\/li\u003e\n\u003cli\u003eProduct Type: Automotive high-flow air filter\u003c\/li\u003e\n\u003cli\u003eFilter Style: Custom round replacement filter\u003c\/li\u003e\n\u003cli\u003eFilter Media: Layered, oiled cotton media\u003c\/li\u003e\n\u003cli\u003eServiceability: Washable and reusable\u003c\/li\u003e\n\u003cli\u003eWarranty: 10-Year\/Million Mile Limited Warranty\u003c\/li\u003e\n\u003cli\u003eApplication: Custom air intake systems requiring a compatible round filter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOne K\u0026amp;N Engineering E-3730 Custom Round High-Flow Air Filter\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFitment data should be confirmed against the vehicle, intake system, and filter housing before installation. This filter is intended for applications compatible with its round mounting configuration.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh-Flow Airflow Design: Layered, oiled cotton media is engineered to improve airflow and support increased horsepower.\u003c\/li\u003e\n\u003cli\u003eWashable and Reusable: Can be cleaned and reused throughout the life of the vehicle when properly serviced.\u003c\/li\u003e\n\u003cli\u003eEnhanced Engine Protection: Helps capture dirt and airborne contaminants while maintaining efficient airflow.\u003c\/li\u003e\n\u003cli\u003eLong-Term Warranty Coverage: Backed by K\u0026amp;N’s 10-Year\/Million Mile Limited Warranty and designed not to void the vehicle warranty when properly installed.\u003c\/li\u003e\n\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\u003ctbody\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\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\u003eCarb Acknowledgement Required: false\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\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"K\u0026N Engineering","offers":[{"title":"Default Title","offer_id":67593008120060,"sku":"E-3730","price":103.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/26bcf4bee8c9469bbdbff175cf156798.jpg?v=1790526859","url":"https:\/\/diycustoms.store\/products\/k-n-engineering-e-3730-custom-round-high-flow-air-filter","provider":"diycustoms.store","version":"1.0","type":"link"}