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Catalytic Converter

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1pc Catalytic Converter, Front Side, Fit Federal Emissions, A-Premium APCCT045
A-Premium®Part # APCCT045
1pc Catalytic Converter, Front Side, Fit Federal Emissions, A-Premium APCCT045
4.618 Reviews
$502.99
CA$529.99
Quantity Less than 2
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3-year warranty
90 days free return
Fits 2002 - 2005 Cadillac Escalade, 2002 - 2005 Chevrolet Avalanche 1500, 1999 - 2006 Chevrolet Silverado 1500, 1999 - 2006 Chevrolet Silverado 1500, 1999 - 2006 Chevrolet Silverado 1500, 2007 - 2007 Chevrolet Silverado 1500 Classic, 2007 - 2007 Chevrolet Silverado 1500 Classic, 2007 - 2007 Chevrolet Silverado 1500 Classic, 1999 - 2000 Chevrolet Silverado 2500, 2000 - 2006 Chevrolet Suburban 1500, 2000 - 2006 Chevrolet Tahoe, 2000 - 2006 Chevrolet Tahoe, 1999 - 2006 GMC Sierra 1500, 1999 - 2006 GMC Sierra 1500, 1999 - 2006 GMC Sierra 1500, 2007 - 2007 GMC Sierra 1500 Classic, 2007 - 2007 GMC Sierra 1500 Classic, 2007 - 2007 GMC Sierra 1500 Classic, 1999 - 2000 GMC Sierra 2500, 2000 - 2006 GMC Yukon, 2000 - 2006 GMC Yukon, 2000 - 2006 GMC Yukon XL 1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
18010, 50511, 645988, 15756278
item #1000L6KQ
Note
EPA Compliant -- Suitable for use on OBDII vehicles from 1996 and newer. This product is not legal for sale or use in CA/NY/CO/ME due to state emissions regulations. We do not ship it to these states. This product is compatible with Federal Emissions standards. For California Emissions Standards, please check the state's aftermarket converter regulations.
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2pc Catalytic Converter, Driver & Passenger, Fit Federal Emissions, A-Premium APCCT030
A-Premium®Part # APCCT030
2pc Catalytic Converter, Driver & Passenger, Fit Federal Emissions, A-Premium APCCT030
4.618 Reviews
$486.99
CA$512.99
Quantity Less than 2
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3-year warranty
90 days free return
Fits 2008 - 2011 Cadillac STS, 2008 - 2011 Cadillac CTS
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity2
Installation PositionDriver & Passenger
ColorNatural
Part interchange
16685, 25971634, 16684, 25939989
item #10055L8H
Note
EPA Compliant -- Suitable for use on OBDII vehicles from 1996 and newer. This product is not legal for sale or use in CA/NY/CO/ME due to state emissions regulations. We do not ship it to these states. This product is compatible with Federal Emissions standards. For California Emissions Standards, please check the state's aftermarket converter regulations.
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2pc Catalytic Converter, Driver & Passenger, Fit Federal Emissions, A-Premium APCCT165
A-Premium®Part # APCCT165
2pc Catalytic Converter, Driver & Passenger, Fit Federal Emissions, A-Premium APCCT165
4.618 Reviews
$623.99
CA$656.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits 2004 - 2009 Cadillac SRX, 2005 - 2010 Cadillac STS
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity2
Installation PositionDriver & Passenger
ColorNatural
Part interchange
674-931, 12567688, 12607451, 12638982, 16622, 101488, 674-930, 12567687, 
...View more
item #10055QRG
Note
【Note-1】 EPA Compliant -- Suitable for use on OBDII vehicles from 1996 and newer. This product is not legal for sale or use in CA/NY/CO/ME due to state emissions regulations. We do not ship it to these states. This product is compatible with Federal Emissions standards. For California Emissions Standards, please check the state's aftermarket converter regulations.
【Note-2】 This item only fits models with the V8 4.6L engine, Not with the V6 3.6L one.
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1pc Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT535
A-Premium®Part # APCCT535
1pc Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT535
4.618 Reviews
$227.99
CA$240.99
Only 1 item left in stock
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3-year warranty
90 days free return
Fits 2014 - 2018 Chevrolet Impala, 2013 - 2016 Cadillac XTS, 2012 - 2016 Buick LaCrosse
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity1
Installation PositionFront Right Passenger Side
ColorNatural
item #1005GVUN
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2pc Catalytic Converter, Front Driver & Passenger, Fit Federal Emissions, A-Premium APCCT515
A-Premium®Part # APCCT515
2pc Catalytic Converter, Front Driver & Passenger, Fit Federal Emissions, A-Premium APCCT515
4.618 Reviews
$645.99
CA$680.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits 2017 - 2023 Cadillac XT5, 2020 - 2023 Cadillac XT6, 2019 - 2023 Chevrolet Blazer, 2017 - 2023 GMC Acadia
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity2
Installation PositionFront Driver & Passenger
ColorNatural
Part interchange
641635, 641636
item #10055KQ6
Note
EPA Compliant -- Suitable for use on OBDII vehicles from 1996 and newer. This product is not legal for sale or use in CA/NY/CO/ME due to state emissions regulations. We do not ship it to these states. This product is compatible with Federal Emissions standards. For California Emissions Standards, please check the state's aftermarket converter regulations.
Show less
1 -PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT400
A-Premium®Part # APCCT400
1 -PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT400
4.618 Reviews
$363.99
CA$383.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits 2009 - 2009 Cadillac Escalade, 2007 - 2008 Chevrolet Avalanche, 2007 - 2008 Chevrolet Avalanche, 2007 - 2008 Chevrolet Silverado 1500, 2007 - 2008 Chevrolet Silverado 1500, 2007 - 2008 Chevrolet Silverado 1500, 2007 - 2008 Chevrolet Silverado 1500, 2009 - 2010 Chevrolet Silverado 1500, 2007 - 2008 Chevrolet Suburban 1500, 2007 - 2008 Chevrolet Suburban 1500, 2007 - 2008 Chevrolet Tahoe, 2007 - 2008 Chevrolet Tahoe, 2008 - 2009 Chevrolet Tahoe, 2007 - 2008 GMC Sierra 1500, 2007 - 2008 GMC Sierra 1500, 2007 - 2008 GMC Sierra 1500, 2007 - 2008 GMC Sierra 1500, 2009 - 2010 GMC Sierra 1500, 2007 - 2008 GMC Yukon, 2007 - 2008 GMC Yukon, 2008 - 2009 GMC Yukon, 2007 - 2008 GMC Yukon XL 1500, 2007 - 2008 GMC Yukon XL 1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
645459, 50450
item #1000L1DT
Note
EPA Compliant -- Suitable for use on OBDII vehicles from 1996 and newer. This product is not legal for sale or use in CA/NY/CO/ME due to state emissions regulations. We do not ship it to these states. This product is compatible with Federal and California Emissions standards. For California Emissions Standards, please check the state's aftermarket converter regulations.
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1pc Catalytic Converter, Right Passenger Side, Fit Federal Emissions, A-Premium APCCT029
A-Premium®Part # APCCT029
1pc Catalytic Converter, Right Passenger Side, Fit Federal Emissions, A-Premium APCCT029
4.618 Reviews
$265.99
CA$279.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits 2008 - 2011 Cadillac CTS, 2008 - 2011 Cadillac STS
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity1
Installation PositionRight Passenger Side
ColorNatural
Part interchange
16684, 25939989
item #10055ANZ
Note
EPA Compliant -- Suitable for use on OBDII vehicles from 1996 and newer. This product is not legal for sale or use in CA/NY/CO/ME due to state emissions regulations. We do not ship it to these states. This product is compatible with Federal Emissions standards. For California Emissions Standards, please check the state's aftermarket converter regulations.
Show less
1pc Catalytic Converter, Front Right Passenger Side, Fit Federal Emissions, A-Premium APCCT516
A-Premium®Part # APCCT516
1pc Catalytic Converter, Front Right Passenger Side, Fit Federal Emissions, A-Premium APCCT516
4.618 Reviews
$307.99
CA$324.99
Quantity Less than 3
Edit ZIP code
3-year warranty
90 days free return
Fits 2017 - 2023 Cadillac XT5, 2020 - 2023 Cadillac XT6, 2019 - 2023 Chevrolet Blazer, 2017 - 2023 GMC Acadia
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity1
Installation PositionFront Right Passenger Side
ColorNatural
Part interchange
641636
item #10055LQV
Note
EPA Compliant -- Suitable for use on OBDII vehicles from 1996 and newer. This product is not legal for sale or use in CA/NY/CO/ME due to state emissions regulations. We do not ship it to these states. This product is compatible with Federal Emissions standards. For California Emissions Standards, please check the state's aftermarket converter regulations.
Show less
1pc Catalytic Converter, Right Passenger Side, Fit Federal Emissions, A-Premium APCCT166
A-Premium®Part # APCCT166
1pc Catalytic Converter, Right Passenger Side, Fit Federal Emissions, A-Premium APCCT166
4.618 Reviews
$286.99
CA$302.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits 2004 - 2009 Cadillac SRX, 2005 - 2010 Cadillac STS
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity1
Installation PositionRight Passenger Side
ColorNatural
Part interchange
674-930, 12567687, 12607450, 12638981, 101487
item #10055C20
Note
【Note-1】 EPA Compliant -- Suitable for use on OBDII vehicles from 1996 and newer. This product is not legal for sale or use in CA/NY/CO/ME due to state emissions regulations. We do not ship it to these states. This product is compatible with Federal Emissions standards. For California Emissions Standards, please check the state's aftermarket converter regulations.
【Note-2】 This item fits for the vehicle with V8 4.6L engine only.
Show less
1pc Catalytic Converter, Left Driver Side, Fit Federal Emissions, A-Premium APCCT167
A-Premium®Part # APCCT167
1pc Catalytic Converter, Left Driver Side, Fit Federal Emissions, A-Premium APCCT167
4.618 Reviews
$286.99
CA$302.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits 2004 - 2009 Cadillac SRX, 2005 - 2010 Cadillac STS
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity1
Installation PositionLeft Driver Side
ColorNatural
Part interchange
674-931, 12567688, 12607451, 12638982, 16622, 101488
item #100558YR
Note
【Note-1】 EPA Compliant -- Suitable for use on OBDII vehicles from 1996 and newer. This product is not legal for sale or use in CA/NY/CO/ME due to state emissions regulations. We do not ship it to these states. This product is compatible with Federal Emissions standards. For California Emissions Standards, please check the state's aftermarket converter regulations.
【Note-2】 This item fits for the vehicle with V8 4.6L engine only.
Show less
1pc Catalytic Converter, Left Driver Side, Fit Federal Emissions, A-Premium APCCT031
A-Premium®Part # APCCT031
1pc Catalytic Converter, Left Driver Side, Fit Federal Emissions, A-Premium APCCT031
4.618 Reviews
$260.99
CA$274.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits 2008 - 2011 Cadillac CTS, 2008 - 2011 Cadillac STS
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity1
Installation PositionLeft Driver Side
ColorNatural
Part interchange
16685, 25971634
item #10055AWY
Note
【Note-1】 EPA Compliant -- Suitable for use on OBDII vehicles from 1996 and newer. This product is not legal for sale or use in CA/NY/CO/ME due to state emissions regulations. We do not ship it to these states. This product is compatible with Federal Emissions standards. For California Emissions Standards, please check the state's aftermarket converter regulations.
【Note-2】 This item fits for the vehicle with V6 3.6L engine only.
Show less
1pc Catalytic Converter, Front Left Driver Side, Fit Federal Emissions, A-Premium APCCT273
A-Premium®Part # APCCT273
1pc Catalytic Converter, Front Left Driver Side, Fit Federal Emissions, A-Premium APCCT273
4.618 Reviews
$192.99
CA$203.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2014 - 2018 Chevrolet Impala, 2013 - 2016 Cadillac XTS
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity1
Installation PositionFront Left Driver Side
ColorNatural
Part interchange
641476, 674-048, 50549, 674048
item #1000NN3N
Note
【Note-1】 EPA Compliant -- Suitable for use on OBDII vehicles from 1996 and newer. This product is not legal for sale or use in CA/NY/CO/ME due to state emissions regulations. We do not ship it to these states. This product is compatible with Federal Emissions standards. For California Emissions Standards, please check the state's aftermarket converter regulations.
【Note-2】 This item only fits the V6 3.6L Model.
Show less
1pc Catalytic Converter, Front Left Driver Side, Fit Federal Emissions, A-Premium APCCT514
A-Premium®Part # APCCT514
1pc Catalytic Converter, Front Left Driver Side, Fit Federal Emissions, A-Premium APCCT514
4.618 Reviews
$335.99
CA$353.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2017-2023 Cadillac XT5, 2020-2023 Cadillac XT6, 2019-2023 Chevrolet Blazer, 2017-2023 GMC Acadia
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac
Item LocatedCanada
Quantity1
Installation PositionFront Left Driver Side
ColorNatural
Part interchange
641635
item #10055NDW
Note
EPA Compliant -- Suitable for use on OBDII vehicles from 1996 and newer. This product is not legal for sale or use in CA/NY/CO/ME due to state emissions regulations. We do not ship it to these states. This product is compatible with Federal Emissions standards. For California Emissions Standards, please check the state's aftermarket converter regulations.
Show less

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!