Wake up Your 4.7! Jeep Grand Cherokee WJ THOR Cowl Intake Install - YouTube
BLACK COLD AIR INTAKE PIPE&HEAT SHIELD FOR 99-04 JEEP GRAND CHEROKEE WJ 4.7 V8 – CDE
Amazon.com: K&N Cold Air Intake Kit: Increase Acceleration & Towing Power, Guaranteed to Increase Horsepower up to 13HP: Compatible with 4.7L, V8, 1999-2004 Jeep Grand Cherokee, 57-1513-1 : Everything Else
Amazon.com: DNA MOTORING CAIP-2-HS-JGC99V8-BKBK Cold Air Intake Pipe+Heat Shield System [for 99-04 Jeep Grand Cherokee 4.7L V8] : Everything Else
Injen 05-07 Jeep Grand Cherokee WK 4.7L V8 Wrinkle Black Tuned Air Int – Hobby Shop Garage