Two catalytic converters.
On the 2012 TSX with the 2.4-liter four-cylinder, the exhaust system uses a dual-cat setup: a primary catalytic converter located close to the engine and a secondary catalytic converter placed farther back in the exhaust path. This arrangement is typical for this model and engine, though aftermarket modifications can alter the count.
Locations and function
Two catalytic converters are standard on the stock 2012 TSX. To help you visualize their placement, here is how they are typically arranged in the factory exhaust system:
- Primary catalytic converter: mounted close to the engine on the downpipe, near the exhaust manifold; it treats exhaust gases early in the flow.
- Secondary catalytic converter: located further back in the midsection of the exhaust, usually before the rear resonator or muffler; it provides additional emissions reduction.
Together, these two converters help meet emissions standards for the vehicle. If you’re inspecting or replacing parts, verify the count for your specific car, especially if aftermarket exhaust components are involved.
Maintenance and replacement considerations
When inspecting or servicing, it’s important to assess the condition of both converters, as failure of either can trigger the check engine light or cause poor performance. Always use parts that meet OEM specifications to maintain emissions compliance and performance.
OEM vs aftermarket considerations
Original Equipment Manufacturer (OEM) catalytic converters are designed to meet the vehicle’s emissions and performance standards. Aftermarket converters can vary in fit, efficiency, and warranty coverage; if you replace them, ensure the parts are compatible with the TSX and compliant with local emissions requirements.
Summary
The 2012 Acura TSX typically uses two catalytic converters—one close to the engine (primary) and one farther back in the exhaust (secondary). This dual-cat setup is standard for the model and engine, though modifications can change the count. Proper maintenance and OEM-compatible replacements help preserve emissions performance and reliability.
How many catalytic converters are in the 2012 Acura TSX?
FITS: 2010 - 2014 ACURA TSX 3.5 All 3 Catalytic Converters.
What are common problems with the 2012 TSX?
Top Acura TSX Problems
- Power Steering Failure. Power steering failure is among the most reported 2012 Acura TSX problems.
- Faulty Tire Pressure Sensor. Some owners of the 2012 Acura TSX have had problems with the tire pressure sensor.
- Engine Problems.
- Excessive Oil Consumption.
- Brake Problems.
- Transmission Failure.
Can you unclog a catalytic converter instead of replacing it?
Unfortunately, cleaning your catalytic converter does not guarantee it will work effectively afterward. If your converter is defective, cleaning it will not make an impact, and any symptoms present before the cleaning process will return. In the end, if nothing works, a replacement is the way to go.
How much is a catalytic converter for a 2012 Acura TSX?
The average price for a 2012 Acura TSX Catalytic Converter at Advance Auto Parts is around $347.01, with a range that starts at $5.89 and goes up to $1,114.99.