Catalytic Converter for Infiniti QX60 (2014-2020) 3.5L Front, Left & Right

Direct-Fit Replacement Catalytic Converter Set for 2014-2020 Infiniti QX60 (L50)

What it Does: The direct-fit catalytic converter set replaces deteriorated factory emissions units on the 2014-2020 QX60 to eliminate diagnostic trouble codes P0420 and P0430 while restoring correct exhaust scavenging and backpressure.

The Stock Infiniti QX60 Catalyst Failure

Factory manifold converters on the transverse VQ35DE and VQ35DD platforms endure intense thermal cycling and cumulative hydrocarbon exposure. Over time, the internal ceramic honeycomb substrate fractures, sinters, or experiences washcoat degradation. This matrix breakdown triggers chronic diagnostic fault codes (P0420 and P0430), generates noticeable internal exhaust rattles, and causes severe flow restrictions that choke engine power and fuel efficiency.

The Engineering Solution

Engineered specifically for the L50 chassis, this complete 3-piece assembly utilizes heavy-gauge, corrosion-resistant stainless steel casing paired with precision CNC-machined flanges to resist warping and exhaust blowouts. Inside, durable high-porosity ceramic monoliths are coated in an optimized precious-metal washcoat to accelerate catalytic conversion of HC, CO, and NOx emissions. Integrated factory-matched O2 sensor bungs and OEM hanger locations ensure exact alignment without requiring cutting or custom welding.

What's Included

• 1x Front Underfloor Catalytic Converter
• 1x Left Manifold Catalytic Converter (Radiator Side)
• 1x Right Manifold Catalytic Converter (Firewall Side)
• Direct-Fit Flange Gasket Set
• Installation Hardware Kit

Technical Specifications

Compatibility

• 2014-2020 Infiniti QX60 3.5L V6 FWD
• 2014-2020 Infiniti QX60 3.5L V6 AWD

Frequently Asked Questions & Fitment Warnings

Does this fit the L50 QX60?

Yes, this is a direct fit for the 2014-2020 Infiniti QX60 equipped with the 3.5L V6 VQ35DE/VQ35DD engine. Non-CARB compliant: Not legal for sale, installation, or use in California or CARB-compliant states. Excludes 2.5L Hybrid powertrains.

Will this resolve my P0420 and P0430 check engine codes?

Yes, replacing spent OEM converters with fresh substrate eliminates catalyst efficiency DTCs, assuming secondary O2 sensors and fuel trims operate within factory tolerances.

The Infiniti Standard

Designed to maintain whisper-quiet cabin acoustics while matching Japanese luxury engineering standards, this system restores original exhaust velocity and engine breathing without drone.