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Catalytic Converter

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Front Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Front Side, Fit Federal Emissions, A-Premium APCCT035
4.4251 Reviews
$172.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
22794842, 16776, 19612
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Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Rear Side, Fit Federal Emissions, A-Premium APCCT439
$195.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionRear Side
ColorNatural
Part interchange
54752, 642278, 50358, 15861400, 15861401, 15861402
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Front Right Catalytic Converter
A-Premium®
1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT535
$185.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionFront Right Passenger Side
ColorNatural
Part interchange
641477, 50550
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2 Pcs Front Catalytic Converter
A-Premium®
2-PC Catalytic Converter, Front Driver & Passenger, Fit Federal Emissions, A-Premium APCCT151
$403.99
Quantity Less than 4
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LaCrosse
Item LocatedUnited States
Quantity2
Installation PositionFront Driver & Passenger
ColorNatural
Part interchange
674-484, 19510, 674-045, 19520
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2 Pcs Front Catalytic Converter
A-Premium®
2-PC Catalytic Converter, Front Driver & Passenger, Fit Federal Emissions, A-Premium APCCT069
$334.99
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: Buick LaCrosse
Item LocatedUnited States
Quantity2
Installation PositionFront Driver & Passenger
ColorNatural
Part interchange
641564, 644143, 16873, 16872
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Front Driver Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Front Left Driver Side, Fit Federal Emissions, A-Premium APCCT070
$181.99
Only 1 item left in stock
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionFront Left Driver Side
ColorNatural
Part interchange
641564, EC50577, 50577
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Front Passenger Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Front Right Passenger Side, Fit Federal Emissions, A-Premium APCCT082
$190.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionFront Right Passenger Side
ColorNatural
Part interchange
644143, 16872
Show less
Front Passenger Catalytic Converter
A-Premium®
1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT056
$236.99
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: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionFront Right Passenger Side
ColorNatural
Part interchange
641445, 674-484, 19510
Show less
Rear Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Rear Side, Fit Federal Emissions, A-Premium APCCT565
$324.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionRear Side
ColorNatural
Part interchange
55744
Show less
Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Exhaust, Fit Federal Emissions, A-Premium APCCT690
$328.99
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: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionExhaust
ColorNatural
Part interchange
642101, 50531
Show less
Front Driver Catalytic Converter
A-Premium®
1-PC Catalytic Converter Front Left Driver Side Fit Federal Emissions A-Premium APCCT055
$239.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionFront Left Driver Side
ColorNatural
Part interchange
641444, 674-045, 19520
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AP Emissions 608706 Catalytic Converter
AP Emissions
AP Emissions 608706 Catalytic Converter
$204.99
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: Buick LaCrosse
Item LocatedUnited States
Quantity1
Part interchange
608706
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AP Emissions 772105 Catalytic Converter
AP Emissions
AP Emissions 772105 Catalytic Converter
$423.99
Only 1 item left in stock
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LaCrosse
Item LocatedUnited States
Quantity1
Part interchange
772105
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AP Emissions 771542 Catalytic Converter, Front Right Passenger Side
AP Emissions
AP Emissions 771542 Catalytic Converter, Front Right Passenger Side
$688.99
Quantity Less than 3
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionFront Right
Part interchange
771542
Show less
AP Emissions 771393 Catalytic Converter, Front Left Driver Side
AP Emissions
AP Emissions 771393 Catalytic Converter, Front Left Driver Side
$827.99
Only 1 item left in stock
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionFront Left
Part interchange
771393
Show less
AP Emissions 771388 Catalytic Converter, Front Left Driver Side
AP Emissions
AP Emissions 771388 Catalytic Converter, Front Left Driver Side
$694.99
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: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionFront Left
Part interchange
771388
Show less
AP Emissions 770105 Catalytic Converter
AP Emissions
AP Emissions 770105 Catalytic Converter
$626.99
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: Buick LaCrosse
Item LocatedUnited States
Quantity1
Part interchange
770105
Show less
AP Emissions 2575 Catalytic Converter
AP Emissions
AP Emissions 2575 Catalytic Converter
$131.99
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: Buick LaCrosse
Item LocatedUnited States
Quantity1
Part interchange
2575
Show less
AP Emissions 642278 Catalytic Converter
AP Emissions
AP Emissions 642278 Catalytic Converter
$265.99
Quantity Less than 3
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LaCrosse
Item LocatedUnited States
Quantity1
Part interchange
642278
Show less
AP Emissions 641444 Catalytic Converter, Front Left Driver Side
AP Emissions
AP Emissions 641444 Catalytic Converter, Front Left Driver Side
$309.99
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: Buick LaCrosse
Item LocatedUnited States
Quantity1
Installation PositionFront Left
Part interchange
641444
Show less
Page 1 of 4

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!