2011 Chevrolet Suburban Catalytic Converters

Genuine GM catalytic converters for the 2011 Chevrolet Suburban, at wholesale prices. Converters are emissions parts, and the substrate loading has to match what the ECM expects from the downstream oxygen sensor. GMT900 through 2014, K2XX from 2015 to 2020, and the T1XX with independent rear suspension from 2021.

Symptoms to look for

A P0420 code, rattling from underneath, or a failed emissions test. On a full-size SUV, vehicles with air ride or magnetic dampers take different parts from those on the standard setup.

What sets these apart

• 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.
• OEM, not lookalike. With catalytic converters the difference shows up on installation day, not in the photo.

Ordering correctly

Genuine GM parts carry the factory part number, so supersessions are documented rather than guessed at. Run your VIN first. One vehicle can list several nearly identical parts and only one is correct. Because we ship centrally, a heavy part costs less delivered here than from a coastal seller.