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Supplier details checked 2026-09-23 · Test catalog
Fits 1999 -2004 Grand Cherokee with 4.0L/4.7L engines
Flowmaster Flow FX Cat-back Exhaust System
409 Stainless Steel construction for extra durability and improved long-term corrosion resistance
Large 3.50-inch black ceramic coated stainless steel tip for rugged looks
Flow FX straight-through performance muffler offers a deep powerful sound
2.50-inch Mandrel-bent 16 gauge tubing maximizes exhaust flow
Uses the factory hanger locations for easy installation
Hardware included for at home installation
Lifetime Limited Warranty
Moderate sound
Flowmaster 99-04 Grand Cherokee 4.0L/4.7L FlowFX Exhaust System
9904 GRAND CHEROKEE 40L47L FFX
SYS 99-04 GRAND CHER
This Flow FX cat-back exhaust system is designed for all 1999-2004 Jeep Grand Cherokee models with the 4.0L or 4.7L engines. Features include 409 stainless steel construction for added durability and 16-gauge 2.50-inch mandrel-bent tubing for free unrestricted flow. The compact oval "straight-through" Flow FX performance muffler attaches behind the catalytic converter and delivers a moderate deep powerful sound while the mandrel-bent stainless tailpipe tucks up high in the undercarriage protecting it from being crushed when traversing rocky terrain. The system uses the factory hanger locations and is finished off with a 3.50-inch black ceramic coated 304 stainless steel tip embossed with the Flowmaster name. The kit includes detailed instructions and all hardware necessary for a quick and easy installation you can do at home. Covered by our Lifetime Limited Warranty.
SYS 99-04 GR
