Replacing the restrictive, stock airbox on your 1994-1997 Powerstroke is probably the easiest upgrade you can do to increase power, throttle response, and fuel economy. Why is the stock airbox so restrictive you may ask? The physical size and media of the air filter limits the amount of airflow that can physically move through it and to the turbo.
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. This system is 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 bolts in place using factory mounting locations and basic hand tools.
California Air Resource Board
D-269-22
Specifications
- SkuKN-57-2531
- ManufacturerK&N Filters
- MPN57-2531
- 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
- 10-Year/Million Mile Limited Warranty
- Will not void vehicle warranty
- Estimated Horsepower Gain: 9.77 HP @ 3022 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-269-22
- Couplers Included: 1
- Type: Gen II
- Product Style: 57 Series FIPK
- Air Filter Height: 9.5 in (241 mm)
- Intake Pipe Color / Finish: Black
- Intake Pipe Material: High-Density Cross-Linked Polyethylene
- Street Legal In All US States: Yes
- Weight: 14.6 lb (4.8 kg)
- Air Filter Large End Diameter: 6.625 in (168 mm)
- Product Box Height: 12.25 in (318 mm)
- Product Box Length: 20.25 in (565 mm)
- Product Box Width: 12.25 in (362 mm)
- Mounting Hardware Included: Yes
- Warranty: 1,000,000 Miles/10 Year
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K&N 57-2531 Cold Air Intake 94-97 Ford 7.3L Powerstroke
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