K&N 57i Series Induction Kits are specifically designed for each different vehicle and will free your car from the size restriction that comes with the factory air box. These economical kits can take a variety of different forms based on vehicle characteristics and available space under the hood. Each kit is designed to provide power throughout the RPM range. The extra surface area of these open-air air filters provide even more airflow at lower restriction than a K&N O/E replacement filter which is always limited to the size of the factory air box. The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 100,000 miles). The filter is either directly attached to the engine carburetor or throttle body or indirectly through a tube assembly running from the filter to the engine. All adapters are made from high quality materials such as steel, Aluminium, silicon or reinforced nylon to ensure long life. 57i Intakes are not legal for use in California and other US States adopting California emission standards.

Part KN57-2525-2 Product Specifications
Product Style: 57 Series FIPK
Estimated Horsepower Gain: 11.61 HP @ 4480 RPM
Replacement Filter: KNRF-1044
Street Legal In All US States: Yes
TUV Approved (Europe): No
Clamp Style: Regular
Type: Gen II
Intake Pipe Colour / Finish: Black

2004 FORD F350 SUPER DUTY 5.4L V8 F/I - All
2004 FORD F350 5.4L V8 F/I - All
2004 FORD F250 SUPER DUTY 5.4L V8 F/I - All
2004 FORD EXCURSION 5.4L V8 F/I - All
2003 FORD F350 SUPER DUTY 5.4L V8 F/I - All
2003 FORD F250 SUPER DUTY 5.4L V8 F/I - All
2003 FORD EXCURSION 5.4L V8 F/I - All
2002 FORD F350 SUPER DUTY 5.4L V8 F/I - All
2002 FORD F250 SUPER DUTY 5.4L V8 F/I - All
2002 FORD EXCURSION 5.4L V8 F/I - All
2001 FORD F350 SUPER DUTY 5.4L V8 F/I - All
2001 FORD F250 SUPER DUTY 5.4L V8 F/I - All
2001 FORD EXCURSION 5.4L V8 F/I - All
2000 FORD F350 SUPER DUTY 5.4L V8 F/I - All
2000 FORD F250 SUPER DUTY 5.4L V8 F/I - All
2000 FORD EXCURSION 5.4L V8 F/I - All
1999 FORD F350 SUPER DUTY 5.4L V8 F/I - All
1999 FORD F250 SUPER DUTY 5.4L V8 F/I - All
1999 FORD F250 5.4L V8 F/I - All

Product Reviews for KN57-2525-2 - K&N