2010 Cadillac CTS Catalytic Converters

Genuine GM catalytic converters for the 2010 Cadillac CTS, at wholesale prices. Converters are emissions parts, and the substrate loading has to match what the ECM expects from the downstream oxygen sensor. Second generation Sigma through 2013 and the Alpha based third generation from 2014 to 2019.

When to replace

A P0420 code, rattling from underneath, or a failed emissions test. On a mid-size car, turbocharged and naturally aspirated cars share a badge and little else in this group.

Why order factory

• VIN verified fitment. We confirm the catalytic converters number against your vehicle before it ships.
• Same day dispatch. Order catalytic converters by mid-afternoon and it leaves our warehouse that day.
• Returns without a fight. We would rather fix a catalytic converters order than argue about it.
• Covered by GM. On catalytic converters that coverage is worth more than the price gap.
• Real wholesale. The same catalytic converters your dealer sells, at a fraction over our cost.

Avoiding the wrong part

The factory number ties back to GM engineering records, which is something no aftermarket catalog can offer. Give us the number stamped on the old part and we will trace what it superseded to. Same day shipping on in stock items, direct from one of the largest GM parts warehouses in the country.