57-2531 - K&N 57 Series FIPK, Performance Intake Kit direct from K&N

K&N 57-2531
57 Series FIPK > Performance Intake Kit

List Price: $449.00
Your Price: $291.85
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The 57 Series Generation II air intake, also referred to as an FIPK^®, is K&N's ultimate performance product. These performance intakes are designed to increase power by as much as 10%. 57 Series FIPK's are CARB exempt, street legal in all 50 US states, come with a Million Mile Limited Warranty and are guaranteed to increase power. K&N air intake systems replace your vehicle's restrictive factory air filter and air intake housing. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This translates into more power and torque for your vehicle. The filters on these kits are washable and reusable. Most of our air intake systems are relatively easy to install using tools commonly available (see installation instructions). [MORE]

Available Information

Installation Instruction Sheet

Dyno Chart - 1996 Ford F250, 7.3L - 9.77 HP Increase

57-2531 Vehicle Applications

Part 57-2531 Product Specifications
Product Style: 57 Series FIPK
Estimated Horsepower Gain: 9.77 HP @ 3022 RPM
Replacement Filter: RC-4780
Street Legal In All US States: Yes
TUV Approved (Europe): No
Clamp Style: Regular
Type: Gen II
Intake Pipe Color / Finish: Black
Weight: 14.6 lb (6.6 kg)
Product Box Length: 20.25 in (514 mm)
Product Box Width: 12.25 in (311 mm)
Product Box Height: 12.25 in (311 mm)

Horsepower gains based on similar vehicle dynamometer test. Results will vary.

Accessories

99-5050 - Filter Care Service Kit - Squeeze

RC-4780 - Replacement Filter

RC-4780DK - Air Filter Wrap

RC-4780DL - Air Filter Wrap

RC-4780DR - Air Filter Wrap

RC-4780DY - Air Filter Wrap

Product Reviews Review part 57-2531

I own a Ford '97 F-250 7.3L. I Just got a new K&N filter intake system and put the factory one in the box of the K&N filter! Let me tell you something bro the throttle feels better with the intake. I'm able to get a better response from it and the turbo dude when I step on it lightly the turbo spoons and sounds loud just with this intake ,its funny when I make the turbo sound like that when I'm passing the Cummins and other people cause its loud and sounds like the 6.0 coming from a 7.3L plus it lowers EGT Temp. It's a must for the '97 F-250 Powerstrokes trust me. …just feels better knowing it just feels right.

Thanks K&N
Raul Salazar, San Juan, Puerto Rico

Install on my 2005 Ford F350 6.0 was little over an hour. Biggest issue was the back nut on the back of the KN filter housing below the radiator fluid fill area. Very difficult to get to, but no issues on the install in general. Engine has good response, sound is about the same. Hoping to increase fuel economy but still in the testing process.
Michael, Ringgold, Georgia

Gentlemen,
Today is April 6,2011 and I just purchased a 33-2385 air-filter for my 2009 Ford Heavy Duty F350. After talking to a friend of mine, he suggested that I try your air filter for better gas mileage. Well... I just installed it in my truck and will be on the hwy. in the morning...I am looking forward to giving you a good report. Until then-thank you.
ROGERS JONES, BEAUMONT, TEXAS

K&N 57-2531 fits the following:

1997 FORD F350 7.3L V8 DSL - All