Shop Parts & Accessories

Shop Aftermarket

Shop Clearance

What Are Catalytic Converters?

Catalytic converters are part of your emissions control system and an exhaust component. These parts convert harmful chemicals into less harmful ones before your exhaust expels them. These harmful compounds include nitrogen gas, carbon monoxide, nitrogen oxides, and hydrocarbons. Your catalytic converter slows the exhaust and converts it before it's released.

How do you know if your catalytic converter needs to be replaced? Usually, a check engine light will come on to alert you of a problem. Your car should display a diagnostic code implicating the catalytic converter when checked. The other common issue for catalytic converter replacement is theft. If your catalytic converter is missing, your vehicle will sound very loud upon startup.

Problems with your catalytic converter could also indicate other issues in your vehicle. If your engine is misfiring, unburned fuel can enter the exhaust system, which can cause your catalytic converter to overheat. Coolant or oil getting into the combustion chamber can clog your catalytic converter as well.

Replace Your Catalytic Converter With Confidence At AutoNation Parts

Catalytic converters come in different grades, including standard and performance models. When you replace the catalytic converter on your car, you want something that matches your car's needs. You should opt for a performance catalytic converter if you have a performance model. You can find the right catalytic converter for your vehicle by visiting AutoNation Parts online.

Tire AutoNation Parts

Tires, wheels, and more.

We can get you there

Filter

availability
availability
WHT002514 - : Catalytic Converter Lock Nut for Audi Image

Catalytic Converter Lock Nut

$3.48
MSRP $5.13
Save $1.65
32.2% Off
7L253019LX - : Catalytic Converter with Integrated Exhaust Manifold for Audi Image

Catalytic Converter with Integrated Exhaust Manifold

S6. Left. Cyl.# 6-8. A catalytic converter that has an integrated exhaust manifold, all in one part.
Discontinued
8K0254250MX - : Catalytic Converter for Audi Image

Catalytic Converter

S5. 4.2l. Right. Catalytic Converter.
$2,713.41
MSRP $3,064.27
Save $350.86
11.5% Off
18407523904 - : Exhaust Manifold for BMW Image

Exhaust Manifold

525i, 530i. Cylinder 4 thru 6. 2004-07, 2004-05, rear. A catalytic converter that has an integrated exhaust manifold, all in one part.
$1,172.10
MSRP $1,387.42
Save $215.32
15.5% Off
18407575127 - : Exhaust Manifold for BMW Image

Exhaust Manifold

4.4 & 4.8L, without supercharger, cylinder 5-8, remanufactured. 750i, 750Li. 650i. 550i. Cylinders 5 thru 8. A catalytic converter that...
$1,761.37
MSRP $2,150.11
Save $388.74
18.1% Off
18308648379 - : Front Pipe for BMW Image

Front Pipe

X6. Sdrive35i, xdrive35i. X5. 3.0l gas. 3.0L turbo.
$561.56
MSRP $716.00
Save $154.44
21.6% Off
18305A5E6D1 - : Center Pipe for BMW Image

Center Pipe

3.0L, 2025-26. M340i xDrive. M440i xDrive.
$660.38
MSRP $842.00
Save $181.62
21.6% Off
18327643152 - : Catalytic Converter for BMW Image

Catalytic Converter

2017-20. 740i, 740ix. 3.0L. 340i, 340ix. 440i, 440i xDrive. 440i, 440ix. 3 series gt. 340xi. 2017-19. 4 series. 440i. Catalytic Converter.
$1,589.86
MSRP $1,904.26
Save $314.40
16.5% Off
18407558769 - : Exhaust Manifold for BMW Image

Exhaust Manifold

3.0L non turbo, with catalytic cnvrtr, cyl 4-6. X5. 3.0l. Without diesel. Cyl. 1-3. A catalytic converter that has an integrated...
$1,378.89
MSRP $1,632.21
Save $253.32
15.5% Off
FC3Z5H270C - : Catalytic Converter for Ford Image

Catalytic Converter

6.7L. Catalytic Converter.
$4,992.44
MSRP $5,478.67
Save $486.23
8.9% Off
BG1Z5E212A - : Converter for Ford Image

Converter

Catalytic Converter.
$943.57
MSRP $1,109.43
Save $165.86
15% Off
KB3Z5E212E - : Catalytic Converter for Ford Image

Catalytic Converter

Bronco. 2.3l. Catalytic Converter.
$538.25
MSRP $632.86
Save $94.61
14.9% Off
No Parts Found
Clear Your Vehicle Search for Another Vehicle
Or try a new Keyword Search in the bar above