Catalytic Converter for Acura TSX (2010-2014) 3.5L Front Left & Right

Direct-Fit Front Catalytic Converter Set for 2010-2014 Acura TSX (CU4)

What it Does: The direct-fit front catalytic converter pair replaces deteriorated factory manifold converters on the 2010-2014 Acura TSX 3.5L to eliminate catalyst efficiency trouble codes and restore proper exhaust flow dynamics.

The Stock Acura TSX Catalytic Converter Failure

Factory catalytic converters on the high-mileage J35Z3 3.5L V6 endure extreme thermal stress due to their close-coupled placement against the cylinder heads. Over time, continuous thermal cycling leads to internal ceramic monolith crumbling, washcoat deterioration, and sintering of precious metal catalyst coatings. This degradation restricts exhaust scavenging, increases cylinder head backpressure, dulls throttle response, and triggers persistent P0420 and P0430 diagnostic trouble codes.

The Engineering Solution

Constructed with durable stainless steel outer shells and high-efficiency ceramic substrates, this replacement converter pair restores exhaust velocity and emissions compliance for EPA-registered jurisdictions. The robust internal core withstands high exhaust gas temperatures without premature melt-down or structural fractures. Heavy-duty, precision-cut flanges ensure leak-free sealing against the factory J35Z3 cylinder heads and downpipe connection points, minimizing exhaust gas velocity loss.

What's Included

• 1x Front Left Catalytic Converter
• 1x Front Right Catalytic Converter
• Mounting Hardware Pack

Technical Specifications

Compatibility

• 2010-2014 Acura TSX Base 3.5L V6 (CU4)
• 2010-2014 Acura TSX Technology Package 3.5L V6 (CU4)

Frequently Asked Questions & Fitment Warnings

Does this fit the CU4 TSX?

Yes, this is a direct fit for the 2010-2014 Acura TSX equipped with the J35Z3 3.5L V6 engine. Does not fit 2.4L 4-cylinder (CU2) models, and is not legal for sale or use on vehicles registered in California or New York (non-CARB compliant).

Will the original factory heat shields reinstall onto these units?

Due to aftermarket outer casing revisions, the factory heat shield does not fit perfectly and may require slight modification or exclusion during installation.

The Acura V6 Standard

Maintain the refined VTEC power delivery and clean operation of your CU4 chassis with exhaust solutions built to clear check engine lights and preserve uncompromised flow characteristics.