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K&N 57-2578 Air Intake

57 Series FIPK > Performance Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   1 Customer Review
  • Simple and cost-effective horsepower upgrade
  • Designed to improve throttle response and engine sound
  • Free-flowing high density polyethylene tube
  • Easy to install with commonly available tools
  • Replaces factory air filter and intake tube retaining factory air box
  • Washable and reusable air filter
  • CARB exempt and street legal in all 50 US States
  • K&N Million Mile Limited Warranty
The K&N 57-2578 Air Intake fits some Ford Mustang GT models. See vehicle applications link for details.
The K&N 57-2578 FIPK air intake system replaces the restrictive factory air filter and air intake tubing while retaining the factory air box on specific Ford Mustang GT models. K&N air intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow for a guaranteed horsepower gain. This allows your engine to inhale a larger amount of air than the factory air filter and air intake assembly. More air means more usable power and acceleration throughout the engine’s RPM range. The 57-2578 air intake comes with a replacement K&N high-flow air filter and an aerodynamically engineered intake tube that easily connects to your vehicle’s factory air box and throttle body. The air filter can be used for up to 50,000 miles before servicing is needed depending on driving conditions. This air intake system is designed for quick and easy installation with commonly available tools. This air intake meets California emission standards and is legal for use in all 50 states.

[More Info on K&N FIPK Air Intakes]

Product Specifications

Estimated Horsepower Gain10.09 HP @ 5379 RPM
Air Filter ColorRed
Air Filter Height1.25 in (32 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeNot Flanged
CARB EO NumberD-269-48
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included4
Couplers Included2
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Product Box Height8.5 in (216 mm)
Product Box Length18.25 in (464 mm)
Product Box Width14.5 in (368 mm)
Product Style57 Series FIPK
Replacement Filter33-2431
Street Legal In All US StatesYes
TUV Approved (Europe)No
TypeGen II
Weight5.8 lb (2.6 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

K&N 57-2578 Air Intake Product Reviews

Saturday, October 31, 2015 - Part 57-2578
Just installed this intake on my 2014 GT and just have to say it seems to have made my Mustang GTmore responsive I have an 6 speed auto, and with the stock system it would momently hesitate when I would launch it from a dead stop, and had a slight hesitation on the 1 to 2 shift. Now that is gone, and it pulls strong all the way up to 6500 rpm. Right now I have 87 octane in the tank. Can't wait to try 91 octane. I have one suggestion for the K&N team, you need to put a firewall plug in the kit, that way all the entire sound tube can be removed. That will clean up the engine compartment.

John D.