57S-4000 K&N Performance Air Intake System

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SKU
57S-4000
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Performance Air Intake System
The K&N 57S-4000 Performance Airbox replaces the restrictive factory air filter and air box lid. K&N performance air boxes are designed to dramatically reduce air flow restriction as well as 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 57S-4000 Performance Airbox comes with an oversized conical K&N high-flow air filter and an injection molded air box lid with the K&N logo embossed on top. The air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This performance air box is relatively easy to install into the air box base with commonly available tools. K&N builds these air box systems to last for the life of your vehicle and they are backed by K&N's Million Mile Limited Warranty. Some K&N 57S Series Performance Airboxes are compliant with the latest TUV emissions and sound regulations. Check the K&N catalog or website for vehicle applications and specific TUV status for each vehicle and air intake.
  • Guaranteed to increase horsepower
  • Designed to improve torque and acceleration
  • Replaces entire factory air box and air filter system
  • Washable and reusable lifetime air filter
  • Easy to install, usually in 90 minutes or less
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • K&N Million Mile Limited Warranty
Replacement FilterE-9289
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
Clamps IncludedNo Clamps Included
Clamp MaterialStainless Steel
Clamp StyleRegular
Couplers IncludedNone
TypeGen I
Product Style57i Series International Kits
Air Filter Height7.688 in (195 mm)
Street Legal In All US States No
TUV Approved (Europe)See Vehicle Applications
TUV Certificate NumberTU-025979-C0-206
Weight4.2 lb (1.9 kg)
Product Box Height11.81 in (300 mm)
Product Box Length15.34 in (390 mm)
Product Box Width11.81 in (300 mm)
California RestrictedNot legal for sale or use in California
Mounting Hardware IncludedYes
Warranty1,000,000 Miles/10 Year
No cross references found for this part
DIY Level

Moderate

Installation Time

60-90 Minutes

Tools Needed

Wrench, Extension, Flat Blade Screwdriver, Allen Wrench

Warning: Cancer & Reproductive Harm – P65Warnings.ca.gov

K&N Products

Unmatched Performance

50 years of improving vehicle performance.

intake

Cold Air Intakes

Custom-engineered tubes deliver better airflow than you get with a stock intake. More air means better performance.

air filters

Air Filters

Using cotton gauze instead of typical folded paper, our filters increase airflow while providing excellent engine protection.

cabin air filter

Cabin Air Filters

Helps capture most mold, mildew, fungus, spores, bacteria, germs, pollen and allergens, and helps to rid the air of unpleasant odors.

oil filters

Oil Filters

K&N oil filters use a high flow filter media that allows for high flow rates while providing outstanding engine protection.

tuning

Speed Shop

From custom air filters to fuel pumps and carb accessories, the K&N Speed Shop has been assembled to help your vehicle run at peak performance.

hvac

Home Air Filters

New washable and reusable air conditioning and furnace filters for your home. From the industry leader in washable automotive filtration.

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FUEL FILTERS

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CLEANING KITS

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HD DIESEL

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POWERSPORTS

Our Story

Why K&N?

We're #1 for a reason. Since 1969 every product we've created delivers high-performance, unmatched quality and longevity

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