K&N is the inventor of the Air Intake System and has over 50 years of experience in the performance filtration industry. Proudly designed and manufactured in the USA, this premium cold air intake system is specifically designed for your vehicle and is dyno tested to provide a guaranteed increase in horsepower. It features a high flow intake tube, custom heat shield, and oversized K&N Washable High-Flow Cotton Air Filter for ultimate airflow. This Intake system replaces the restrictive OEM air box to provide an improved driving experience for daily driving or towing. It installs easily in about 60 minutes and is backed by a No-Hassle Lifetime Limited Warranty and will not void your factory warranty.Compatible Vehicles:1997-2002 FORD Expedition1997-2003 FORD F1502000-2001 FORD F150 Harley Davidson2004-2004 FORD F150 Heritage1998-1999 LINCOLN Navigator GUARANTEED INCREASE IN HORSEPOWER & TORQUE: K&N cold air intake systems provide a less restrictive path for airflow, increasing the volume of cool, oxygen-rich air into your engine. DYNO TESTING YOU CAN TRUST: K&N air intake horsepower/torque testing is performed on wheel-based dynamometers and the reports are included with each intake system. IMPROVED ENGINE SOUND - HEAR THE GROWL: K&N’s intake systems allow your engine to breathe and sound as it should- your engine will growl on acceleration and return to quiet once at speed. BETTER TOWING: K&N Air intake kit improves acceleration and uphill performance when towing by improving throttle response, overall horsepower and torque. Excellent for daily and highway driving. PREMIUM ENGINE PROTECTION FROM A TRUSTED BRAND: K&N air intake will not void manufacturer vehicle warranty & No-Hassle Lifetime Limited Warranty protects for the life of your vehicle. HIGH-FLOW REUSABLE AIR FILTER: 4 layers of pleated, breathable cotton with K&N’s red filter oil to absorb dirt & dust particles, allowing clean air to continue flowing into your engine, only needs cleaning every 100k miles under normal highway conditions. EASY TO INSTALL: Includes detailed, step-by-step instructions & all necessary parts- the entire air intake system can typically be installed in less than 60 minutes with basic hand tools. MADE IN THE USA: Proudly made in the USA for trusted quality & reliability and backed by US based customer support. UPC 024844104434 ASIN B000CO81KA Shape Oblong Fit Type Vehicle Specific Fit Brand Name K&N Unit Count 1.0 Count Item Weight 6.04 Kilograms Manufacturer K&N Engineering Model Number 57-2541 Product Grade Performance Part Item Type Name 1997-2004 Ford (F150, Heritage, Harley Davidson, Expedition) Included Components air intake kit Manufacturer Part Number 57-2541 OEM Equivalent Part Number 57-2541 Manufacturer Warranty Description limited warranty Global Trade Identification Number 00024844104434