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Buick Catalytic Converter

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2010 2012-2016 Buick LaCrosse 1-PC Catalytic Converter Front Left Driver Side Fit Federal Emissions A-Premium APCCT0552010 2012-2016 Buick LaCrosse 1-PC Catalytic Converter Front Left Driver Side Fit Federal Emissions A-Premium APCCT055
A-Premium®Part # APCCT055
2010 2012-2016 Buick LaCrosse 1-PC Catalytic Converter Front Left Driver Side Fit Federal Emissions A-Premium APCCT055
$321.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits Buick LaCrosse: 2010 2012 2013 2014 2015 2016
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Left Driver Side
ColorNatural
item #1000L1P0
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2010 2012-2016 Buick LaCrosse 2-PC Catalytic Converter Front Driver & Passenger Fit Federal Emissions A-Premium APCCT151
A-Premium®Part # APCCT151
2010 2012-2016 Buick LaCrosse 2-PC Catalytic Converter Front Driver & Passenger Fit Federal Emissions A-Premium APCCT151
$383.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits Buick LaCrosse: 2010 2012 2013 2014 2015 2016
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity2
Installation PositionFront Driver & Passenger
ColorNatural
Part interchange
674-484, 19510, 674-045, 19520
item #100555XW
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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2010-2011 Buick LaCrosse 1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT082
A-Premium®Part # APCCT082
2010-2011 Buick LaCrosse 1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT082
$204.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits Buick LaCrosse: 2010 2011
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Right Passenger Side
ColorNatural
Part interchange
644143, 16872
item #100558TN
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 for Front Right Passenger Side, NOT for Front Left Driver Side.
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1997-2004 Buick Regal 1-PC Catalytic Converter Exhaust Fit Federal Emissions A-Premium APCCT325
A-Premium®Part # APCCT325
1997-2004 Buick Regal 1-PC Catalytic Converter Exhaust Fit Federal Emissions A-Premium APCCT325
$260.99
Only 1 item left in stock
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3-year warranty
90 days free return
Fits Buick Regal: 1997 1998 1999 2000 2001 2002 2003 2004
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionExhaust
ColorNatural
Part interchange
642583, 54627, 10330020, 10343187, 10343189, 12564328, 12564329, 24508097, 
...View more
item #1000NUHC
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 vehicle with V6 3.8L engine.
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2010-2011 Buick LaCrosse 2-PC Catalytic Converter Front Driver & Passenger Fit Federal Emissions A-Premium APCCT069
A-Premium®Part # APCCT069
2010-2011 Buick LaCrosse 2-PC Catalytic Converter Front Driver & Passenger Fit Federal Emissions A-Premium APCCT069
$401.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits Buick LaCrosse: 2010 2011
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity2
Installation PositionFront Driver & Passenger
ColorNatural
Part interchange
641564, 644143, 16873, 16872
item #10055G05
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
2010-2011 Buick LaCrosse 1-PC Catalytic Converter Front Left Driver Side Fit Federal Emissions A-Premium APCCT070
A-Premium®Part # APCCT070
2010-2011 Buick LaCrosse 1-PC Catalytic Converter Front Left Driver Side Fit Federal Emissions A-Premium APCCT070
$204.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits Buick LaCrosse: 2010 2011
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Left Driver Side
ColorNatural
Part interchange
641564, EC50577, 50577
item #100555QZ
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
2016-2018 Buick Envision 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT171
A-Premium®Part # APCCT171
2016-2018 Buick Envision 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT171
$385.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Envision: 2016 2017 2018
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
679-531, 19420223, 12660225, 12645922
item #1005579W
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
2014-2017 Buick Regal 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT171
A-Premium®Part # APCCT171
2014-2017 Buick Regal 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT171
$385.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Regal: 2014 2015 2016 2017
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
679-531, 19420223, 12660225, 12645922
item #1005569P
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
2010 Buick Allure 1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT056
A-Premium®Part # APCCT056
2010 Buick Allure 1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT056
$257.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits 2010 Buick Allure
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Right Passenger Side
ColorNatural
item #10055CLA
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2010 2012-2016 Buick LaCrosse 1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT056
A-Premium®Part # APCCT056
2010 2012-2016 Buick LaCrosse 1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT056
$257.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits Buick LaCrosse: 2010 2012 2013 2014 2015 2016
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Right Passenger Side
ColorNatural
item #10055KC9
Show less
2002-2007 Buick Rendezvous 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT451
A-Premium®Part # APCCT451
2002-2007 Buick Rendezvous 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT451
$423.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Rendezvous: 2002 2003 2004 2005 2006 2007
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
55274, 10340796, 10352471, 10352680
item #1000NUXY
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 the FWD(Front Wheel Drive) vehicle only.
Show less
2013-2021 Buick Encore 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT162
A-Premium®Part # APCCT162
2013-2021 Buick Encore 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT162
$253.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Encore: 2013 2014 2015 2016 2017 2018 2019 2020 2021
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
13265369, 55578984, 674-854, 16953, 644075
item #1000L5ER
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 part is compatible with vehicles with an L4 1.4L engine.
Show less
2006-2008 Buick Lucerne 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT423
A-Premium®Part # APCCT423
2006-2008 Buick Lucerne 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT423
$274.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Lucerne: 2006 2007 2008
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
52507, 15786790, 15921944, 15921945
item #10055QXE
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 the model with the V6 3.8L engine only.
Show less
2011-2015 Buick Regal 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT035
A-Premium®Part # APCCT035
2011-2015 Buick Regal 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT035
$217.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Regal: 2011 2012 2013 2014 2015
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
22794842, 16776, 19612
item #1000L5CG
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 vehicle with L4 2.4L, not for V6 3.0L.
Show less
2010-2016 Buick LaCrosse 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT035
A-Premium®Part # APCCT035
2010-2016 Buick LaCrosse 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT035
$217.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick LaCrosse: 2010 2011 2012 2013 2014 2015 2016
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
22794842, 16776, 19612
item #1000L4EX
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 vehicle with L4 2.4L, not for V6 3.0L.
Show less
2012-2015 Buick Verano 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT035
A-Premium®Part # APCCT035
2012-2015 Buick Verano 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT035
$217.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Verano: 2012 2013 2014 2015
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
22794842, 16776, 19612
item #1000L1XY
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 vehicle with L4 2.4L, not for V6 3.0L.
Show less
2004-2005 Buick Rainier 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT132
A-Premium®Part # APCCT132
2004-2005 Buick Rainier 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT132
$278.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Rainier: 2004 2005
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
15098454, 15155245, 15216000, 55476, 55292, 50365, 19100
item #1000L1EA
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 part is compatible with vehicles with an L6 4.2L and a 113.0-inch wheelbase.
Show less
2016-2019 Buick Encore 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT139
A-Premium®Part # APCCT139
2016-2019 Buick Encore 1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT139
$334.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Encore: 2016 2017 2018 2019
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
674-051, 12667326, 12641117, 12673199, 19420230
item #10055AL4
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 the L4 1.4L models only.
【Note-3】This item only comes with one oxygen sensor plug.
Show less
2012-2016 Buick LaCrosse 1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT535
A-Premium®Part # APCCT535
2012-2016 Buick LaCrosse 1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT535
$240.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick LaCrosse: 2012 2013 2014 2015 2016
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionFront Right Passenger Side
ColorNatural
item #1012YL10
Show less
2005-2009 Buick Allure 1-PC Catalytic Converter Rear Side Fit Federal Emissions A-Premium APCCT439
A-Premium®Part # APCCT439
2005-2009 Buick Allure 1-PC Catalytic Converter Rear Side Fit Federal Emissions A-Premium APCCT439
$275.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Allure: 2005 2006 2007 2008 2009
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedCanada
Quantity1
Installation PositionRear Side
ColorNatural
Part interchange
54752, 642278, 50358, 15861400, 15861401, 15861402
item #10055LTR
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
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!