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K&N 57-1521 Fuel Injection Performance Kit for 91-95 Jeep® Wrangler YJ with 4.0L I6 Engine & without ABS

Catalog #: 17007.001
K&N Part #: 57-1521
K&N's Fuel Injection Performance Kits (FIPK) are designed to promote performance in stock fuel injected engines by allowing air filtration with least resistance in air flow. In addition to the filter, these kits have uniquely designed adapters, creating a radius entry that reduces restriction and allows the engine to breathe a greater volume of air.
The filter recharger kit is sold separately.

Achieve horsepower gains even under varying atmospheric conditions with an FIPK kit which replaces the entire air intake, isolating the cold air with the use of a custom heat shield and directing the air through a unique chamber delivery system. Dyno test results showed torque increases through the towing ranges of no less than 23 ft. lbs. FIPKs are legal in all 50 states.

To ensure all the power and performance that your fuel- injected engine is capable of providing, install a high-quality K&N Fuel Injection Performance Kit and feel the power! You’ll get better acceleration, instant power, and ease in lane changing and passing even while towing. And remember, K&N delivers performance that's guaranteed for 10 years or one million miles, whichever comes first.

57-1521 Product Specifications
Product Style: 57 Series FIPK
Estimated Horsepower Gain: 12.99 HP @ 4800 RPM
Type: Gen II
Replacement Filter: RC-4630
CARB EO Number: D-269-22
CARB Exempt: Yes
Weight: 11.7 lb (5.3 kg)
Product Box Length: 23 in (584 mm)
Product Box Width: 14.25 in (362 mm)
Product Box Height: 12.13 in (308 mm)

Check local regulations concerning emissions & aftermarket air cleaner assemblies. Because it is not OE equipment it could fail visual inspection.

Installation Notes
Installation Difficulty:
Level 2Intermediate

Tools Needed:
Flat Blade Screwdriver
4mm Allen Hex Wrench
3/8" Drive Ratchet
6" Extension
1/2" Socket
7/16" Socket
13mm Wrench
10mm Wrench
7/16" Wrench
1/4 Drill Bit

Installation Time: 1-2 hours
Parts Included

Filtercharger Element
Intake Tube
Heat Shield
Angled “L” Bracket
“L” Bracket
2 Rubber Mounted Studs
Mounting Hardware
Installation Hardware

Million Mile Limited Warranty.
  • Engine Size: 4.0L I-6
  • Engine Fuel: Gasoline
  • Jeep Wrangler (YJ)

  • 1995 Jeep Wrangler (YJ)
  • 1994 Jeep Wrangler (YJ)
  • 1993 Jeep Wrangler (YJ)
  • 1992 Jeep Wrangler (YJ)
  • 1991 Jeep Wrangler (YJ)
CARB Certified for 91-95. Fits Without ABS Only.
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