K&N's roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque, and are protected by the K&N No-Hassle Lifetime Limited Warranty.
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.
- 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
Application Summary:
| Year |
Make/Model |
| 2000-2004 |
Ford Excursion |
| 2001 |
Ford F-250 |
| 1999-2004 |
Ford F-250 Super Duty |
| 2004 |
Ford F-350 |
| 1999-2004 |
Ford F-350 Super Duty |
| Attributes |
| Air Box Included |
No |
| Air Filter Color |
Red |
| Air Filter Element Washable |
Yes |
| Air Filter Height |
8.000 in. (203mm) |
| Air Filter Large End Diameter |
7.500 in. (191mm) |
| Air Filter Material |
Cotton Gauze |
| Air Filter Oulet Length |
6.000 in. (152mm) |
| Air Filter Oulet Width |
6.000 in. (152mm) |
| Air Filter Outlet Length |
6.000 in. (152mm) |
| Air Filter Outlet Shape |
Round |
| Air Filter Outlet Width |
6.000 in. (152mm) |
| Air Filter Washable |
Yes |
| Alternate Part Number |
57-2525-2 |
| Alternate Replacement Filter |
RF-1044/RU-1044XD |
| ASIN |
B000BR1Q82 |
| California Proposition 65 |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| CARB EO Number |
D-269-31 |
| Clamp Color |
Natural |
| Clamp Color/Finish |
Natural |
| Clamp Material |
Stainless Steel |
| Clamp Quantity |
7 |
| Clamp Style |
Regular |
| Clamps Included |
7 |
| Country of Origin (Primary) |
US |
| Coupler Color |
Black |
| Coupler Color/Finish |
Black |
| Couplers Included |
2 |
| Emission Code |
Legal US |
| Estimated Horse Power Gain |
11.61 HP @ 4480 RPM |
| Estimated Horsepower Gain |
11.61 HP @ 4480 RPM |
| Estimated Torque Gain |
14 lbft |
| Filter Color |
Red |
| Filter Material |
Cotton Gauze |
| Harmonized Tariff Code (Schedule B) |
8421310000 |
| Hazardous Material Code |
N |
| Horse Power Increase |
12 HP |
| Intake Pipe Color |
Black |
| Intake Pipe Color / Finish |
Black |
| Intake Pipe Material |
High-Density Cross-Linked Polyethylene |
| Intake Pipe Ports |
All intake tube ports needed for the specified applications are included |
| Item Weight |
10.800 lbs. (4.9 kg) |
| Life Cycle Status Code |
Available to Order |
| Mass Air Flow Sensor Adapter Included |
No |
| Mass Air Flow Sensor Included |
Mass Air Flow Sensor Adapter Included When Required |
| Mounting Hardware Included |
Yes |
| NAFTA Preference Criterion Code |
B |
| Oil Included |
Yes, Filter Is Pre-Oiled |
| Package Material |
Paperboard |
| Package Type |
Box |
| Product Box Height |
12.5 in (318 mm), 12.500 in. (318mm) |
| Product Box Length |
18.25 in (464 mm), 18.250 in. (464mm) |
| Product Box Width |
18.25 in (464 mm), 18.250 in. (464 mm) |
| Product Style |
57 Series FIPK |
| Replacement Filter |
RU-1044, RF-1044 |
| RPM |
4480 |
| SDR Required Flag |
N |
| Street Legal |
Yes |
| Street Legal In All US States |
Yes, 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. |
| TUV Approved (Europe) |
No, No |
| Type |
Gen II |
| Warranty |
No-Hassle Lifetime Limited |
| Weight |
10.8 lb (4.9 kg) |
| GTIN |
00024844095077 |
