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Catalytic Converter

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Front Exhaust Manifold Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Front Side, Fit Federal Emissions, A-Premium APCCT019
$233.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
12604221, 12607895, 16578, 641338, 19280
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Front Catalytic Converter
A-Premium®
1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT074
$246.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
12571601, 8125922480, 101433, 16481, 674-703, 674703, 642196
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Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Rear Side, Fit Federal Emissions, A-Premium APCCT650
$282.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Installation PositionRear Side
ColorNatural
Part interchange
645852, 50468
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Front Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Front Side, A-Premium APCCT686
$452.99
Quantity Less than 4
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
674-294, 674 294, 674294, 641620
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AP Emissions 608415 Catalytic Converter
AP Emissions
AP Emissions 608415 Catalytic Converter
$148.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Part interchange
608415
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AP Emissions 912166 Catalytic Converter, Right Passenger Side
AP Emissions
AP Emissions 912166 Catalytic Converter, Right Passenger Side
$717.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
912166
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AP Emissions 912005R Catalytic Converter
AP Emissions
AP Emissions 912005R Catalytic Converter
$344.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Part interchange
912005R
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AP Emissions 776316 Catalytic Converter, Right Passenger Side
AP Emissions
AP Emissions 776316 Catalytic Converter, Right Passenger Side
$770.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
776316
Show less
AP Emissions 776106 Catalytic Converter
AP Emissions
AP Emissions 776106 Catalytic Converter
$615.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Part interchange
776106
Show less
AP Emissions 645852 Catalytic Converter, Rear Side
AP Emissions
AP Emissions 645852 Catalytic Converter, Rear Side
$328.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Installation PositionRear
Part interchange
645852
Show less
AP Emissions 608736 Catalytic Converter
AP Emissions
AP Emissions 608736 Catalytic Converter
$261.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Part interchange
608736
Show less
AP Emissions 9216 Catalytic Converter
AP Emissions
AP Emissions 9216 Catalytic Converter
$32.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Part interchange
9216
Show less
AP Emissions 608226 Catalytic Converter
AP Emissions
AP Emissions 608226 Catalytic Converter
$183.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Part interchange
608226
Show less
AP Emissions 645873 Catalytic Converter, Left Driver Side
AP Emissions
AP Emissions 645873 Catalytic Converter, Left Driver Side
$487.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Installation PositionLeft
Part interchange
645873
Show less
AP Emissions 641338 Catalytic Converter with Integrated Exhaust Manifold
AP Emissions
AP Emissions 641338 Catalytic Converter with Integrated Exhaust Manifold
$710.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Part interchange
641338
Show less
Eastern Catalytic 70855 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 70855 Catalytic Converter
$273.99
Quantity Less than 5
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Part interchange
70855
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Eastern Catalytic 50513 Catalytic Converter, Right Passenger Side
Eastern Catalytic
Eastern Catalytic 50513 Catalytic Converter, Right Passenger Side
$836.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
50513
Show less
Eastern Catalytic 50383 Catalytic Converter, Right Passenger Side
Eastern Catalytic
Eastern Catalytic 50383 Catalytic Converter, Right Passenger Side
$553.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
50383
Show less
Eastern Catalytic 50468 Catalytic Converter, Rear Side
Eastern Catalytic
Eastern Catalytic 50468 Catalytic Converter, Rear Side
$358.99
Quantity Less than 4
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Installation PositionRear
Part interchange
50468
Show less
Eastern Catalytic 50512 Catalytic Converter, Left Driver Side
Eastern Catalytic
Eastern Catalytic 50512 Catalytic Converter, Left Driver Side
$663.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer
Item LocatedUnited States
Quantity1
Installation PositionLeft
Part interchange
50512
Show less
Page 1 of 2

A catalytic converter, often referred to as a "cat," is an essential component of your engine's exhaust system. This device uses catalysts to transform harmful chemicals in the exhaust gases.

What are the signs of a bad catalytic converter?

  • Check engine light
    The dashboard warning light may illuminate, indicating potential issues.
  • Decreased engine performance
    Noticeable loss of power, acceleration, or overall engine performance.
  • Poor fuel economy
    A significant drop in fuel efficiency can occur as the converter fails.
  • Excessive exhaust emissions
    Increased emissions, including a strong sulfur or rotten egg smell.
  • Rattling noises
    Unusual rattling sounds from the exhaust system, indicating internal damage.
  • Overheating
    The engine may run hotter than normal due to restricted exhaust flow.
  • Failed emissions test
    Inability to pass emissions testing due to high pollution levels.

Shop for aftermarket catalytic converters on A-Premium.com

Premium.com offers a wide range of aftermarket catalytic converters for your vehicle. Refine your search by selecting from various dimensions, inlet types, and tube materials. A-Premium team is dedicated to helping you find a compatible catalytic converter for your car. Every item in our catalog is carefully selected by our team of experts, ensuring they undergo rigorous quality checks to endure the demanding conditions of your exhaust system. Shop now to find the best deal on your new catalytic converter!