Catalytic Converter for Nissan Xterra (2000-2001) 3.3L Left & Right

Direct-Fit Replacement Catalytic Converter Set for 2000-2001 Nissan Xterra (WD22)

What it Does: The catalytic converter set replaces deteriorated factory converters on the 2000-2001 Nissan Xterra to restore balanced exhaust flow, eliminate P0420/P0430 diagnostic trouble codes, and reduce backpressure.

The Stock Nissan Xterra Catalyst Failure Modes

Factory exhaust converters on the first-generation WD22 platform inevitably succumb to thermal fatigue, internal substrate degradation, and washcoat poisoning over high mileage cycles. Under continuous thermal stress and rich-running conditions typical of the VG33E, the OEM ceramic cores experience sintered precious metal active sites and internal brick fracture. This failure manifests as catalytic efficiency degradation, triggering persistent Bank 1 and Bank 2 check engine lights (P0420 and P0430). In severe cases, fragmented honeycomb structures create exhaust flow restrictions, generating parasitic backpressure that bogs down mid-range torque, degrades fuel economy, and elevates exhaust gas temperatures.

The Engineering Solution

Engineered to resolve bank imbalance and flow restrictions, this left-and-right manifold-back set utilizes heavy-gauge 409 stainless steel tubing to resist external oxidation and stress cracks. Inside, a high-density 600 CPSI cordierite ceramic substrate provides exceptional surface area, coated with a durable palladium and rhodium catalytic washcoat to maximize emissions conversion efficiency. Mandrel-bent transition sections maintain uniform exhaust gas velocity, eliminating turbulence found in crush-bent piping. Heavy-duty, precision-machined flanges mate flush to the factory exhaust manifolds and downpipes, while OE-positioned O2 sensor bungs allow factory downstream sensors to thread directly without wiring harness extensions or modifications.

What's Included

• 1 Left (driver side) catalytic converter
• 1 Right (passenger side) catalytic converter
• Mounting hardware

Technical Specifications

Compatibility

• 2000 Nissan Xterra 3.3L V6 (VG33E) Driver and Passenger Side
• 2001 Nissan Xterra 3.3L V6 (VG33E) Driver and Passenger Side

Frequently Asked Questions & Fitment Warnings

Does this fit the WD22 Xterra?

Yes, this is a direct fit for the 2000-2001 Nissan Xterra equipped with the VG33E engine. Note: This system is 49-state Federal OBD-II compliant and is not legal for sale or use in California, Colorado, New York, or Maine.

Are cutting or welding operations required during installation?

No, this assembly features a direct-fit, bolt-on layout designed to mate directly with existing factory exhaust components using the included hardware.

The Nissan Truck Durability Standard

Engineered to handle severe trail washboards and demanding payload cycles, this assembly provides rugged structural durability and OEM-grade flow characteristics to keep your utility rig running clean across backroads and highways.