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K&N Engineering Part # KNN57-2525-2

K&N 99-04 Ford F-Series Super Duty V8-5.4L Performance Intake Kit - 57-2525-2

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Ships from Buffalo, NYOur U.S. warehouse
Trusted since 2005Enthusiasts behind the counter

A high-density polyethylene (HDPE) rotationally-molded tube helps increase the volume of airflow to your engine, and provides a guaranteed increase in horsepower and torque. These systems are paired with a washable, reusable High-Flow Air Filter featuring oiled cotton filter media. The oversized, conical design allows you to go up to 100,000 miles between filter services under normal highway driving conditions. A custom heat shield helps protect intake air from the high temperature of your engine bay, and the entire system can typically be installed in less than 60 minutes

  • Guaranteed to increase horsepower and torque
  • Roto-molded HDPE intake tube paired with oversized oiled cotton air filter
  • Engineered to provide high airflow and exceptional filtration
  • Replaces factory air filter and intake tube
  • Filter only requires cleaning every 100,000 miles under normal highway driving conditions
  • Typical installation can be completed in 60 minutes or less with simple hand tools
  • No-Hassle Lifetime Limited Warranty™
  • Will not void vehicle warranty

  • Weight: 10.8 lb (4.9 kg)
  • Estimated Horsepower Gain: 11.61 HP @ 4480 RPM
  • Estimated Torque Gain: 14 lbft
  • Couplers Included: 2
  • Clamps Included: 7
  • Coupler Color/Finish: Black
  • Intake Pipe Color / Finish: Black
  • Air Filter Material: Cotton Gauze
  • CARB EO Number: D-269-31
  • Intake Pipe Material: High-Density Cross-Linked Polyethylene
  • Clamp Color/Finish: Natural
  • Air Box Included: No
  • Mass Air Flow Sensor Adapter Included: No
  • Air Filter Color: Red
  • Clamp Style: Regular
  • Alternate Replacement Filter: RF-1044/RU-1044XD
  • Air Filter Outlet Shape: Round
  • Replacement Filter: RU-1044
  • Clamp Material: Stainless Steel
  • Oil Included: Yes
  • Street Legal In All US States: Not legal for sale or use in California on any pollution controlled motor vehicle. NOTE: Some specific models and years may be legal in CA. Check the CARB status on your parts at knfilters.com

Free U.S. standard shipping on qualifying orders $199+. Special order and made-to-order items can't be cancelled or refunded once ordered.

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