Cat Back Exhaust for Jeep Grand Cherokee (2005-2010) 4.7L 5.7L

Direct-Fit Performance Cat Back Exhaust for 2005-2010 Jeep Grand Cherokee

What it Does: The Cat Back Exhaust replaces the restrictive factory exhaust assembly on the 2005-2010 Jeep Grand Cherokee to reduce exhaust backpressure, improve scavenging efficiency, and deliver a cleaner V8 exhaust note.

The Stock Jeep Grand Cherokee Exhaust Flow Bottlenecks

From the factory, the WK platform relies on crush-bent aluminized tubing paired with an excessively baffled, chambered OEM muffler and restrictive resonator assembly. Over extended heat cycles and rough terrain exposure, the thin factory piping deteriorates, while internal baffling creates turbulent boundary-layer separation. This excessive backpressure prevents the 4.7L PowerTech and 5.7L HEMI V8 engines from evacuating spent combustion gases efficiently, trapping thermal energy in the exhaust tract and choking off low-end torque during sustained hill climbs or heavy towing applications.

The Engineering Solution

This direct-replacement cat-back system solves flow stagnation by utilizing smooth, mandrel-bent Aluminized Steel tubing to maintain uniform cross-sectional diameter through every radius. The low-restriction performance muffler reduces acoustic harshness without chamber turbulence, accelerating exhaust velocity away from the catalytic converters. Engineered specifically for the WK chassis, it includes precision pre-welded hangers and heavy-gauge flanges that drop into factory mounting locations with zero custom fabrication required, providing robust structural integrity against road debris and trail vibration.

Technical Specifications

Compatibility

• 2005-2010 Jeep Grand Cherokee 4.7L V8 (EVA / EVE Engine)
• 2005-2010 Jeep Grand Cherokee 5.7L HEMI V8 (EZB / EZD Engine)

Frequently Asked Questions

Does this fit the WK Grand Cherokee?
Yes, this is a direct fit for the 2005-2010 Jeep Grand Cherokee equipped with the 4.7L PowerTech or 5.7L HEMI V8 engine.

Will installing this cat-back system trigger a Check Engine Light (CEL)?
No, because this system bolts downstream of the factory catalytic converters, oxygen sensor readings remain unaffected and no tune is required.

The Jeep Trail Caliber

Built to handle harsh off-camber articulation and demanding trail duties, this assembly provides the structural resilience and thermal dissipation necessary to protect underbody clearances while hauling or crawling off-road.