Compatible: (7.3L)
1998 - 2007 Ford F-250
1998 - 2007 Ford F-350
1999 Ford F-450
1999 Ford F-550
2000 - 2003 Ford Excursion
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 90 minutes. Some intakes are not legal for sale or use on any pollution controlled motor vehicle in California. See the product specifications for CARB status on each part for a specific vehicle.
- 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 90 minutes or less with simple hand tools
- No-Hassle Lifetime Limited Warranty™
- Will not void vehicle warranty
| Estimated Horsepower Gain | 14.88 HP @ 2925 RPM |
| Replacement Filter | RC-4780 |
| Air Filter Color | Red |
| Air Filter Material | Cotton Gauze |
| Air Filter Outlet Shape | Round |
| Clamps Included | 4 |
| Clamp Material | Stainless Steel |
| Clamp Style | Regular |
| CARB EO Number | D-269-25 |
| Couplers Included | 1 |
| Type | Gen II |
| Product Style | 57 Series FIPK |
| Intake Pipe Color / Finish | Black |
| Intake Pipe Material | High-Density Cross-Linked Polyethylene |
| Street Legal In All US States | See Vehicle Applications |
| TUV Approved (Europe) | No |
| Weight | 10.3 lb (4.7 kg) |
| Product Box Height | 12.25 in (311 mm) |
| Product Box Length | 20.25 in (514 mm) |
| Product Box Width | 12.25 in (311 mm) |
| Mounting Hardware Included | Yes |
| Warranty | No-Hassle Lifetime Limited |
Filtration & Engine Protection
K&N automotive filters offer an optimal blend of high air flow, filtration efficiency, durability and dust capacity. K&N high flow filter media has been tested in our own in-house laboratories and by independent labs using the ISO5011 air filtration standard developed by the Society of Automotive Engineers. Our goal at K&N is to design reusable filters with the most possible airflow while providing guaranteed engine protection.
Fuel Economy
Fuel economy testing and mileage claims are not as cut and dry as they may seem. The EPA's website states, "EPA's fuel economy estimates are designed to allow consumers to comparison shop. Your fuel economy will almost certainly vary from the EPA's fuel economy rating. This is based on a number of factors, such as weather, road conditions, your driving and maintenance habits, and your use of air conditioning." Many exaggerated claims are found in the marketplace by automotive product manufacturers claiming to improve vehicle gas mileage. K&N does not make any general fuel economy claims. We simply encourage you to try our washable filter products for yourself.
K&N Air Filter Oil
A K&N reusable filter is designed with four to six layers of cotton gauze media sandwiched between two aluminum wire screens. The cotton media is then treated with a specially formulated grade of filter oil that causes tackiness throughout the cotton's microscopic strands. The cotton in a K&N replacement air filter allows high volumes of airflow, and when combined with the tackiness of the filter oil creates an efficient filtering media that ensures engine protection.
K&N Consumer Protection
The K&N Consumer Protection Plan goes a step further than the K&N Million Mile Limited Warranty. At times, the performance aftermarket has been plagued by automotive manufacturers and auto dealers that may attempt to discourage you from modifying your vehicle. They would prefer that you buy OE parts and not customize your car or truck and have even voided their own manufacturer's warranty due to vehicle modifications. K&N and the Magnuson-Moss Warranty Act protect consumers from such denied warranty claims. When you buy a K&N OE replacement filter or air intake system you can be confident your vehicle's warranty will remain in effect. If you encounter a dealership that wants to void your warranty because of one of our products, K&N will resolve the issue so you won't have to. We believe K&N makes The World's Best Air Filter and we stand behind that claim 100 percent.
Consumer Protection Pledge
K&N pledges to our customers that they will not be taken advantage of and charged for a repair due to a dealership warranty denial blamed on the presence of a K&N product.
Install Guide:
Warranty:
MONEY-BACK GUARANTEE (ORDER SHIPS WITHIN 3 BUSINESS DAYS. RECEIVE A FULL REFUND IF NOT)