Gibson 12213 Aluminized Single Cat-Back Exhaust System for 2004-2011 Armada/QX56

Vehicle Fitment

• 2004-2011 Nissan Armada (5.6L V8)
• 2004-2010 Infiniti QX56 (5.6L V8)
• 2004 Nissan Pathfinder Armada (5.6L V8)

Features

• Aluminized steel cat-back exhaust system with strong performance gains
• Mandrel-bent 3.00" tubing for smooth exhaust flow and reduced backpressure
• SuperFlow™ baffled and chambered muffler for aggressive yet controlled exhaust tone
• Polished 3.50" stainless steel slash-cut tip for a factory-integrated look
• Exits on the passenger side behind the rear tire
• Includes factory-style hangers and clamps for easy bolt-on installation
• Dyno-tuned for increased low-end torque and horsepower
• Lifetime limited warranty against defects

Specifications

• Brand: Gibson Performance Exhaust
• Part Number: 12213
• Type: Cat-Back Single Exhaust System
• Material: Aluminized steel with polished tip
• Main Tubing Diameter: 3.00"
• Muffler: SuperFlow™ baffled and chambered design
• Tip Diameter: ~3.50" polished stainless
• Exit Location: Passenger side rear
• Installation: Bolt-on, no welding required

Included Components

• Mandrel-bent 3.00" aluminized exhaust piping
• 1x SuperFlow™ muffler
• 1x Polished stainless 3.50" slash-cut exhaust tip
• Factory style hangers and installation hardware

Product Description

The Gibson 12213 Cat-Back Exhaust System is a performance-oriented exhaust upgrade engineered for Nissan Armada and Infiniti QX56 models equipped with the 5.6 L V8 engine from 2004 through 2011. This single-side cat-back system replaces the restrictive stock exhaust behind the catalytic converter with mandrel-bent 3.00" aluminized tubing and a baffled, chambered SuperFlow™ muffler that enhances exhaust flow and sound. Designed to boost low-end torque and horsepower in real-world driving conditions, it's dyno-tested to deliver noticeable gains where you feel them most - around 1,800-3,000 RPM - which can help with acceleration, towing, and passing power.

Installation is straightforward with a bolt-on design that uses factory-style hangers and clamps, so no welding is required. The aluminized steel construction balances durable performance with corrosion resistance, while the polished 3.50" stainless steel slash-cut tip adds an aggressive yet refined look at the rear of your vehicle. The system exits behind the passenger-side rear tire and is backed by Gibson's lifetime limited warranty for peace of mind.

Fitment for the Gibson 12213 is confirmed for full-size SUV platforms including the 2004-2011 Nissan Armada and 2004-2010 Infiniti QX56 with the 5.6 L V8, as well as select 2004 Nissan Pathfinder Armada variants. This cat-back exhaust delivers a deeper exhaust note, improved flow, and enhanced performance without compromising street-legal compliance or vehicle reliability.