Home » Jeep Engine & Fuel System » Air Intakes » Performance Air Intakes » K&N Fuel Injection Performance Kit for 99-04 Jeep® Grand Cherokee WJ with 4.0L 6CYL

K&N Fuel Injection Performance Kit for 99-04 Jeep® Grand Cherokee WJ with 4.0L 6CYL

The Quadratec® Difference
Catalog #: 77003.8009
K&N Part #: 57-1526
K&N's Fuel Injection Performance Kits (FIPK) promote performance in stock fuel-injected engines by increasing air intake with less resistance. By replacing the entire air intake tract, isolating the cold air with the use of a custom heat shield and directing the air through a unique chamber delivery system, these kits consistently achieve horsepower gains even under varying atmospheric conditions. Dyno test results showed torque increases through the towing ranges of up to 23 ft. lbs. FIPKs are legal in all 50 states. You get better acceleration, and instant power even when towing. K&N delivers performance that's guaranteed for 10 years or one million miles.

57-1526 Product Specifications
Product Style: 57 Series FIPK
Estimated Horsepower Gain: 7.73 HP @ 4711 RPM
Type: Gen II
Replacement Filter: RC-4700
CARB Exempt: Yes
Weight: 10.4 lb (4.7 kg)
Product Box Length: 21 in (533 mm)
Product Box Width: 12.25 in (311 mm)
Product Box Height: 12.38 in (314 mm)

Installation Notes
Installation Difficulty:
Level 2Intermediate
Parts Included

Air Filter
Intake Tube
Heat Shield
Edge Trim
Three Hose Clamps
Tapered Silicone Hose
Mounting Brackets
Nuts, Bolts & Washers
Installation Instructions

  • Engine Size: 4.0L I-6
  • Engine Fuel: Gasoline
  • Jeep Grand Cherokee (WJ)

  • 2004 Jeep Grand Cherokee (WJ)
  • 2003 Jeep Grand Cherokee (WJ)
  • 2002 Jeep Grand Cherokee (WJ)
  • 2001 Jeep Grand Cherokee (WJ)
  • 2000 Jeep Grand Cherokee (WJ)
  • 1999 Jeep Grand Cherokee (WJ)
CARB Certified for 99-04.
Share Your Thoughts
Review Summary
Shared Media