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Catalytic Converter

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Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Exhaust, Fit Federal Emissions, A-Premium APCCT411
$412.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LeSabre
Item LocatedUnited States
Quantity1
Installation PositionExhaust
ColorNatural
Part interchange
645979, 50316
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Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Exhaust, Fit Federal Emissions, A-Premium APCCT103
$179.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LeSabre
Item LocatedUnited States
Quantity1
Installation PositionExhaust
ColorNatural
Part interchange
50391
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AP Emissions 770316 Catalytic Converter, Right Passenger Side
AP Emissions
AP Emissions 770316 Catalytic Converter, Right Passenger Side
$666.99
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 LeSabre
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
770316
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AP Emissions 770811 Catalytic Converter
AP Emissions
AP Emissions 770811 Catalytic Converter
$708.99
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 LeSabre
Item LocatedUnited States
Quantity1
Part interchange
770811
Show less
AP Emissions 770594 Catalytic Converter
AP Emissions
AP Emissions 770594 Catalytic Converter
$704.99
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 LeSabre
Item LocatedUnited States
Quantity1
Part interchange
770594
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AP Emissions 645979 Catalytic Converter
AP Emissions
AP Emissions 645979 Catalytic Converter
$331.99
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 LeSabre
Item LocatedUnited States
Quantity1
Part interchange
645979
Show less
AP Emissions 602206 Catalytic Converter, Rear Side
AP Emissions
AP Emissions 602206 Catalytic Converter, Rear Side
$84.99
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 LeSabre
Item LocatedUnited States
Quantity1
Installation PositionRear
Part interchange
602206
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AP Emissions 602004 Catalytic Converter
AP Emissions
AP Emissions 602004 Catalytic Converter
$96.99
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 LeSabre
Item LocatedUnited States
Quantity1
Part interchange
602004
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AP Emissions 602205 Catalytic Converter
AP Emissions
AP Emissions 602205 Catalytic Converter
$85.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LeSabre
Item LocatedUnited States
Quantity1
Part interchange
602205
Show less
AP Emissions 608227 Catalytic Converter
AP Emissions
AP Emissions 608227 Catalytic Converter
$177.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LeSabre
Item LocatedUnited States
Quantity1
Part interchange
608227
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: Buick LeSabre
Item LocatedUnited States
Quantity1
Part interchange
608736
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: Buick LeSabre
Item LocatedUnited States
Quantity1
Part interchange
608226
Show less
AP Emissions 645288 Catalytic Converter
AP Emissions
AP Emissions 645288 Catalytic Converter
$352.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LeSabre
Item LocatedUnited States
Quantity1
Part interchange
645288
Show less
Eastern Catalytic 99176 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 99176 Catalytic Converter
$305.99
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 LeSabre
Item LocatedUnited States
Quantity1
Part interchange
99176
Show less
Eastern Catalytic 50329 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 50329 Catalytic Converter
$216.99
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 LeSabre
Item LocatedUnited States
Quantity1
Part interchange
50329
Show less
Eastern Catalytic 50391 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 50391 Catalytic Converter
$297.99
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 LeSabre
Item LocatedUnited States
Quantity1
Part interchange
50391
Show less
Eastern Catalytic 50108 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 50108 Catalytic Converter
$231.99
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: Buick LeSabre
Item LocatedUnited States
Quantity1
Part interchange
50108
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Eastern Catalytic 50109 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 50109 Catalytic Converter
$150.99
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 LeSabre
Item LocatedUnited States
Quantity1
Part interchange
50109
Show less
Eastern Catalytic 50290 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 50290 Catalytic Converter
$374.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick LeSabre
Item LocatedUnited States
Quantity1
Part interchange
50290
Show less
Eastern Catalytic 50316 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 50316 Catalytic Converter
$396.99
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 LeSabre
Item LocatedUnited States
Quantity1
Part interchange
50316
Show less
Page 1 of 3

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!