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K&N High Performance Air Intake System for 4.0L Engines by K&N Filters

Part no: KN-571521

K&N High Performance Air Intake System for 4.0L Engines
$329.99 + free Shipping
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Please Verify Fitment

This product fits only specific vehicles. Select your vehicle to ensure it fits.

This item is excluded from all sales and promotions.

Product Details

Important Notes:

  • Mass Air Flow Sensor Adapter included when required
  • All intake tube ports needed for the specified applications are included

Fits:

  • 1991-1995 Jeep Wrangler YJ with 4.0L Engine

Description:

K&N High Performance Air Intake System 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. This air intake comes with a chrome topped K&N high-flow air filter and a heat shield that connects to the fresh air duct. Air is directed through an aerodynamically engineered intake tube into the engines throttle body for a guaranteed power gain. The tube accommodates the factory air temperature sensor and crank case vent hose. It replaces your Jeep'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. The over-sized 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 the existing factory mounting points.

Product Details:

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

Product Specifications:

  • Product Style: 57 Series FIPK
  • Estimated Horsepower Gain: 12.65 HP @ 4800 RPM
  • Air Filter Color: Red
  • Air Filter Outlet Shape: Round
  • Air Filter Material: Cotton Gauze
  • Intake Pipe Color / Finish: Black
  • Air Filter Large End Diameter: 5.5" (140 mm)
  • Weight: 11.7 lb (5.3 kg)
  • Air Filter Height: 6.5" (165 mm)
  • TUV Approved (Europe): No
  • Vacuum Tubing Included: Yes
  • Street Legal In All US States: Yes
  • Type: Gen II

Parts Included:

  • (1) High Performance Air Intake System for 4.0L Engines

Years Covered:

1991, 1992, 1993, 1994 and 1995

Vehicle Fitment

YearsMakeModel
1991-1995JeepWrangler YJ

Additional Information

SKUKN-571521
BrandK&N Filters
SKU Aliases 57-1521
Engine Type4.0L
Fuel TypeGas

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