1-800-345-4545
FREE SHIPPING!
Orders Over $95
Same Day Shipping Before 11 PM ET
0
My Cart
$0.00
Shop By Vehicle
Shop By
Category
All Categories

Rebates
Gift Certificates
My Account
E-Mail Signup
Catalog Request
Help

K&N 57-1521

Fuel Injection Performance Kit 1991-95 Wrangler 4.0L

K&N 57-1521

599-57-1521

jegs shipping
FREE Shipping
Ships 12/05/16 if Ordered Today
K&N 57-1521 Fuel Injection Performance Kit 1991-95 Wrangler 4.0L $274.99
Fuel Injection Performance Kit
  • 1991-95 Wrangler 4.0L
  • + 12.65 HP increase
  • Street Legal In All US States-CARB EO Number: D-269-22

  • K&N 57-1521 Details

    Jeep

  • Designed To Increase Power 10%
  • Million Mile Warranty
  • Reduces Intake Restriction
  • Easy To Install
  • Reusable/Washable
  • Long Lasting Performance

  • Specifications:

    Replacement Filter
    RC-4630
    Horse Power Increase
    13 HP
    Estimated Horse Power Gain
    12.65 HP @ 4800 RPM
    Clamp Material
    Stainless Steel
    Clamps Included
    4
    Couplers Included
    2
    Air Filter Material
    Cotton Gauze
    Air Filter Color
    Red
    Clamp Style
    Regular
    Intake Pipe Material
    High-Density Polyethylene
    Air Filter Outlet Shape
    Round
    Intake Pipe Color / Finish
    Black
    Air Filter Large End Diameter
    5.5 in (140 mm)
    RPM
    4800
    CARB EO Number
    D-269-22 (pdf)
    Filter Color
    Red
    Filter End Cap Finish
    Chrome
    Quantity
    Sold as a kit
    Sleeve Color
    Black
    Tube Color
    Black
    Tube Material
    Plastic
    Manufacturer's Part Number:
    57-1521

    K&N 57 (FIPK) and 63 (AirCharger) Series Air Intake Kits represent a dramatic improvement over the K&N OE Replacement Filter alone. They use only non-metallic rotationally molded tubes that can reduce intake air temperature and sound compared to metal tubes. Restriction can exist between an air filter and engine, which undermines the benefits of a K&N Air Filter. The weakest link in the airflow "chain" robs a vehicle of horsepower; often that weak point is the factory air path to the engine. K&N Air Intake Kits virtually eliminate air path restriction by replacing the air filter and the entire air path to the engine. The aerodynamic tube drives a massive amount of air into an engine to produce more power.

    K&N High-Flow Cold Air Intakes are state-of-the-art. They begin with the largest conical air filter that can fit into the engine compartment while still using factory holes/mounts. This extra filter size provides even more airflow at lower restriction than a K&N OE Replacement Filter because the standard filter is limited to the size of the factory air box. The oversized air filter also captures and holds more dirt, extending the service life before cleaning is required (up to 100,000 miles). The filter is isolated from high engine temperature by a heat shield designed to lower the temperature of the air entering the engine, which increases horsepower. The filter is then attached to a high-density polyethylene tube. The molding process allows tubes to be precisely formed in order to reduce turbulence and accelerate airflow into the engine. This is why some tubes have unique shapes; they're engineered specifically for each application. Finally, the tube connects to the engine with adapters made from high-strength silicon & reinforced nylon to ensure long life.

    Features
  • Vehicle-Specific Design
  • Washable/Reusable Air Filter
  • Replaces OE Filter and Air Box
  • Works with Original Factory Computer
  • Easy to Install (Usually 90 minutes or less)
  • Guaranteed to Provide More HP and Better Acceleration
  • Built to Use Stock Holes & Mounting Points Whenever Possible
  • Street-Legal in Most States except California (Check part number or vehicle listing for CARB status)
  • Lasts up to 100,000 Miles before Requiring Service
  • Million Mile Limited Warranty

  • Does K&N 57-1521 fit your vehicle?

    Narrow Results
    Filter By
    Year
    Filter By
    SubModel
    Filter By
    EngineType
    Filter By
    Liter

    1993 JEEP WRANGLER (YJ)

    • Liter: 4.0
    • SubModel: BASE
    • CUI: 242
    • EngineType: L6 ( 4.0 L / 242 )

    1993-1995 JEEP WRANGLER (YJ)

    • EngineType: ALL
    • SubModel: SAHARA

    1993-1994 JEEP WRANGLER (YJ)

    • EngineType: ALL
    • SubModel: RENEGADE

    1994 JEEP WRANGLER (YJ)

    • EngineType: ALL
    • SubModel: SE

    1991-1992 JEEP WRANGLER (YJ)

    • Liter: 4.0
    • SubModel: BASE
    • CUI: 242
    • EngineType: L6 ( 4.0 L / 242 )

    1995 JEEP WRANGLER (YJ)

    • Liter: 4.0
    • SubModel: SE
    • CUI: 242
    • EngineType: L6 ( 4.0 L / 242 )

    1991-1992 JEEP WRANGLER (YJ)

    • EngineType: ALL
    • SubModel: RENEGADE

    1991 JEEP WRANGLER (YJ)

    • Liter: 4.0
    • SubModel: SAHARA
    • CUI: 242
    • EngineType: L6 ( 4.0 L / 242 )

    1991 JEEP WRANGLER (YJ)

    • Liter: 4.0
    • SubModel: ISLANDER
    • CUI: 242
    • EngineType: L6 ( 4.0 L / 242 )

    1992 JEEP WRANGLER (YJ)

    • EngineType: ALL
    • SubModel: SAHARA

    1992 JEEP WRANGLER (YJ)

    • EngineType: ALL
    • SubModel: ISLANDER
    Items You Need