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K&N For 03-04 Ford Expedition 4.6L/5.4L 57 Series Air Intake System - 57-2538

K&N For 03-04 Ford Expedition 4.6L/5.4L 57 Series Air Intake System - 57-2538

Guaranteed to increase horsepower
Designed to improve throttle response and engine sound
Lasts up to 100,000 miles before service is required (depending on driving conditions)
Easy to install, usually in 90 minutes or less
Free-flowing high density polyethylene tube
Replaces entire factory air intake system
Washable and reusable lifetime air filter
K&N Million Mile Limited Warranty

The K&N 57-2538 Air Intake fits some Ford Expedition models. See vehicle applications link for details.

The K&N 57-2538 FIPK air intake system replaces the restrictive factory air filter and air intake housing in some Ford Expedition models. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine’s RPM range. The 57-2538 air intake comes with a chrome topped K&N high-flow air filter and a heat shield that installs into the previous air box space. Air is directed through an aerodynamically engineered intake tube into the engine’s throttle body for a guaranteed power gain. The tube accommodates the factory mass air sensors, air temperature sensor, idle air control vent hose and crank case vent hose. The oversized cone shaped air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This air intake is relatively easy to install usually in 90 minutes or less using existing factory mounting points requiring commonly available tools to do the job. K&N 57 Series FIPK's are street legal in all 50 US states and come with K&N's Million Mile Limited Warranty. 

Product Specifications

Replacement Filter                                      RF-1020
Air Filter Color                                              Red
Air Filter Material                                      Cotton Gauze
Air Filter Outlet Shape                              Round
Clamps Included                                      6
Clamp Material                                      Stainless Steel
Clamp Style                                              Regular
CARB EO Number                                       D-269-28
Couplers Included                                       2
Type                                                       Gen II
Product Style                                               57 Series FIPK
Air Filter Height                                       8 in (203 mm)
Intake Pipe Color / Finish                       Black
Intake Pipe Material                               High-Density Polyethylene
Street Legal In All US States                       Yes
TUV Approved (Europe)                                No
Weight                                                       11.6 lb (5.3 kg)
Air Filter Large End Diameter                       7.5 in (191 mm)
Product Box Height                                       12.5 in (318 mm)
Product Box Length                               18.25 in (464 mm)
Product Box Width                                       18.25 in (464 mm)
Mounting Hardware Included                        Yes
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

FITMENT

2004 Ford Expedition 5.4L V8 Fuel Injection
All Models Street Legal In All US States:Yes
CARB EO Number: D-269-28 TUV Approved (Europe): No
2004 Ford Expedition 4.6L V8 Fuel Injection
All Models Street Legal In All US States:Yes
CARB EO Number: D-269-28 TUV Approved (Europe): No
2003 Ford Expedition 5.4L V8 Fuel Injection
All Models Street Legal In All US States:Yes
CARB EO Number: D-269-28 TUV Approved (Europe): No
2003 Ford Expedition 4.6L V8 Fuel Injection
All Models Street Legal In All US States:Yes
CARB EO Number: D-269-28 TUV Approved (Europe): No

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