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Shopping for BMW-X3
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BMW X3 Catalytic Converter

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2 Pcs Front & Rear Catalytic Converter2 Pcs Front & Rear Catalytic Converter
A-Premium®
2-PC Catalytic Converter Front & Rear Fit Federal Emissions A-Premium APCCT537
$567.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW X3
Item LocatedUnited States
Quantity2
Installation PositionFront & Rear
ColorNatural
Part interchange
641582, 674-073, 18403415422, 643162, 674-074, 18403415423
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Front Catalytic Converter
A-Premium®
1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT811
$413.99
Quantity Less than 2
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW X3
Item LocatedUnited States
Quantity1
Installation PositionFront Side
Part interchange
17621, 52265
ConditionNew
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Rear Catalytic Converter
A-Premium®
1-PC Catalytic Converter Rear Side Fit Federal Emissions A-Premium APCCT822
$410.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW X3
Item LocatedUnited States
Quantity1
Installation PositionRear Side
ColorNatural
Part interchange
40816
ConditionNew
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Rear Catalytic Converter
A-Premium®
1-PC Catalytic Converter Rear Side Fit Federal Emissions A-Premium APCCT543
$301.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW X3
Item LocatedUnited States
Quantity1
Installation PositionRear Side
ColorNatural
Part interchange
643162, 674-074, 18403415423
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Front Catalytic Converter with Integrated Exhaust Manifold
A-Premium®
1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT536
$309.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW X3
Item LocatedUnited States
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
641582, 674-073, 18403415422
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Eastern Catalytic 41297 Catalytic Converter, Rear Side
Eastern Catalytic
Eastern Catalytic 41297 Catalytic Converter, Rear Side
$744.99
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: BMW X3
Item LocatedUnited States
Quantity1
Installation PositionRear
Part interchange
41297
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Eastern Catalytic 40816 Catalytic Converter with Integrated Exhaust Manifold, Rear Side
Eastern Catalytic
Eastern Catalytic 40816 Catalytic Converter with Integrated Exhaust Manifold, Rear Side
$795.99
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: BMW X3
Item LocatedUnited States
Quantity1
Installation PositionRear
Part interchange
40816
Show less
Eastern Catalytic 40815 Catalytic Converter with Integrated Exhaust Manifold, Front Side
Eastern Catalytic
Eastern Catalytic 40815 Catalytic Converter with Integrated Exhaust Manifold, Front Side
$795.99
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: BMW X3
Item LocatedUnited States
Quantity1
Installation PositionFront
Part interchange
40815
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Catalytic Converter - Walker 15034
Walker
Walker 15034 Catalytic Converter, Exhaust
$167.99
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: BMW X3
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
15034, SC207, 602507, 6007, 602007, 70430, SC217, 6507
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Catalytic Converter - Walker 83402
Walker
Walker 83402 Catalytic Converter, Exhaust
$319.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW X3
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
83402, 910004, 443105
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Catalytic Converter - Walker 81712
Walker
Walker 81712 Catalytic Converter, Exhaust
$1,094.99
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: BMW X3
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
81712
Show less
Catalytic Converter - Walker 15104
Walker
Walker 15104 Catalytic Converter, Exhaust
$269.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW X3
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
15104, 641211, 92624, 82624
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!