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The Gibson 612203 Cat-Back Single Exhaust delivers real performance gains on the 1999–2002 Nissan Xterra 3.3L. Built with 2.25 inch 409 stainless mandrel-bent tubing and Gibson’s SuperFlow muffler, this system produces dyno-proven gains of 10 to 15 horsepower and 15 to 20 lb-ft of torque , with the strongest improvements in the 1,800 to 3,000 RPM range the power band most used during daily driving, towing, and highway passing.
Key Features
- Product series: Stainless - Single Exhaust
- Tubing Diameter: 2.25-in. 409 Stainless mandrel bent tubing.
- Tip Description: 3in. Polished T304 Stainless Round, Slash- Cut Tip, Clamp on
- Tip Specification: Inlet 2.25 in., Outlet 3 in., L-8 in.
- Muffler Description: Baffled &, Chambered Design, No internal Packing, Minimal Interior Drone, Aggressive Sound
- Muffler Dimension: 6 in. Round, 2.25 in. Offset Inlet, 2.25in. Offset Outlet, L-24 in.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 1999 | Nissan | Xterra | 3.3L |
| 2001-2002 | Nissan | Xterra | 3.3L |
Specifications
| Manufacturer | Gibson |
|---|---|
| Manufacturer Part Number | 612203 |
| Product Type | Catback |
| Fitment Type | Vehicle specific |
| Tubing Diameter | 2.25-in. 409 Stainless mandrel bent tubing. |
| Tip Description | 3in. Polished T304 Stainless Round, Slash- Cut Tip, Clamp on |
| Tip Specification | Inlet 2.25 in., Outlet 3 in., L-8 in. |
| Muffler Description | Baffled &, Chambered Design, No internal Packing, Minimal Interior Drone, Aggressive Sound |
| Muffler Dimension | 6 in. Round, 2.25 in. Offset Inlet, 2.25in. Offset Outlet, L-24 in. |
| Additional Description | Includes all hardware and factory style hangers for easy bolt on installation. |
| Exit Position | Driver Side Exit Behind Rear Tire. |
| Footnote | Flange Connection to Converter |
| Warranty | Lifetime Limited Warranty |
What's Included
- One new Gibson catback in the exact configuration identified by manufacturer part number 612203
- Hardware and accessories only when supplied for this exact part number
About Gibson
Gibson develops vehicle-specific and universal exhaust components for street, truck, SUV, and performance applications. Selection and installation requirements remain exact-part-number specific.
Related Gibson Products
- Gibson 612201 Cat Back Single Exhaust 1998 to 2000 Nissan Frontier 2.4L 2.5in 409 Stainless
- Gibson 614001 Cat Back Single Exhaust 2006 to 2011 Honda Element 2.4L 2.25in 409 Stainless
- Gibson 612501 Cat Back Single Exhaust 2008 to 2009 Hummer H2 Base 6.2L 3.5in 409 Stainless
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Frequently Asked Questions
Which vehicles fit Gibson GIB612203?
Gibson GIB612203 is listed for 1999 Nissan Xterra, and 2001-2002 Nissan Xterra. Confirm the exact engine, trim, drivetrain, body or cab configuration, exhaust layout, and every application note before ordering.
What should I verify before ordering Gibson GIB612203?
Match the exact part number, system type, material, finish, tubing and connection diameters, exhaust configuration, package contents, and current manufacturer notes shown in this listing.
What should be checked when installing Gibson GIB612203?
Verify all interfaces, hanger positions, tip and body clearances, clamp or fastener torque, leak-free operation, and local emissions requirements. Reinspect the system after its first heat cycle.
Installation Instructions
Follow the current Gibson instructions and vehicle service information for this exact part number. Work on a cool exhaust, support the vehicle safely, confirm all interfaces and clearances, align the system before final tightening, test for leaks, and inspect the installation again after the first heat cycle.
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