Catalytic Converter Set for Nissan Maxima (2009-2014) 3.5L Front & Rear

Direct-Fit Catalytic Converter Set for 2009-2014 Nissan Maxima (A35)

What it Does: The catalytic converter set replaces the failed factory manifold and underfloor catalytic converters on the 2009-2014 Nissan Maxima to eliminate catalyst efficiency trouble codes and restore proper exhaust flow dynamics.

The Stock Nissan Maxima Catalyst Failure Modes

Factory close-coupled manifold converters on the A35 chassis Maxima endure severe thermal cycling from the high-compression VQ35DE V6 engine. Over extended mileage, the original ceramic honeycomb matrices suffer thermal shock, precious metal depletion, and carbon fouling. This breakdown triggers diagnostic trouble codes P0420 and P0430. Worse, degrading core structures can fracture, causing internal rattling, increased exhaust backpressure, lost fuel economy, and the potential for abrasive substrate dust to be drawn back into the combustion chambers during valve overlap.

The Engineering Solution

This complete three-piece catalytic converter package features durable, heat-resistant 409 stainless steel outer shells and smooth, mandrel-bent inlet and outlet piping. Each converter houses a high-efficiency 600 CPSI cordierite ceramic substrate layered with a precise palladium-rhodium washcoat formulation, engineered for rapid light-off times and complete emissions conversion. Thick, precision-machined mating flanges prevent thermal warping and exhaust gas leaks, while factory-located O2 sensor bungs allow factory lambda probes to thread directly into place without harness alterations or extensions.

What's Included

• 1x Front Left (Radiator Side) Manifold Catalytic Converter
• 1x Front Right (Firewall Side) Manifold Catalytic Converter
• 1x Rear Underfloor Catalytic Converter
• Direct-fit installation mounting hardware kit

Technical Specifications

Compatibility

• 2009-2014 Nissan Maxima S 3.5L V6 (VQ35DE)
• 2009-2014 Nissan Maxima SV 3.5L V6 (VQ35DE)

Frequently Asked Questions & Fitment Warnings

Does this fit the A35 Maxima?

Yes, this is a direct fit for the 2009-2014 Nissan Maxima equipped with the VQ35DE engine. Not legal for sale or use on vehicles registered in California, Colorado, New York, or Maine.

Is welding or cutting required for installation?

No, this direct-fit system matches factory flange dimensions and installs using the included hardware and standard hand tools without any cutting or welding.

The Nissan VQ Performance Caliber

Restore the crisp throttle response and unrestricted exhaust note of your VQ35DE powertrain by purging choked factory catalysts in favor of high-efficiency emissions flow.