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Shopping for 2006-Audi-A4
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Catalytic Converter

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Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Front Side, Fit Federal Emissions, A-Premium APCCT538
$236.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2006 Audi A4
Item LocatedUnited States
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
642018, 40684
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AP Emissions 608265 Catalytic Converter
AP Emissions
AP Emissions 608265 Catalytic Converter
$152.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
608265
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AP Emissions 608214 Catalytic Converter
AP Emissions
AP Emissions 608214 Catalytic Converter
$152.99
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: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
608214
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AP Emissions 770105 Catalytic Converter
AP Emissions
AP Emissions 770105 Catalytic Converter
$626.99
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: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
770105
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AP Emissions 770115 Catalytic Converter
AP Emissions
AP Emissions 770115 Catalytic Converter
$634.99
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: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
770115
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AP Emissions 642688 Catalytic Converter
AP Emissions
AP Emissions 642688 Catalytic Converter
$572.99
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: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
642688
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AP Emissions 608715 Catalytic Converter
AP Emissions
AP Emissions 608715 Catalytic Converter
$196.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
608715
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AP Emissions 608714 Catalytic Converter
AP Emissions
AP Emissions 608714 Catalytic Converter
$196.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
608714
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AP Emissions 608745 Catalytic Converter
AP Emissions
AP Emissions 608745 Catalytic Converter
$238.99
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: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
608745
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AP Emissions 840005 Catalytic Converter
AP Emissions
AP Emissions 840005 Catalytic Converter
$305.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
840005
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AP Emissions 608315 Catalytic Converter
AP Emissions
AP Emissions 608315 Catalytic Converter
$158.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
608315
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Eastern Catalytic 82725 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 82725 Catalytic Converter
$180.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
82725
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Eastern Catalytic 83164 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 83164 Catalytic Converter
$172.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
83164
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Eastern Catalytic 70316 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 70316 Catalytic Converter
$141.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
70316
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Eastern Catalytic 41022 Catalytic Converter, Front Side
Eastern Catalytic
Eastern Catalytic 41022 Catalytic Converter, Front Side
$641.99
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: 2006 Audi A4
Item LocatedUnited States
Quantity1
Installation PositionFront
Part interchange
41022
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Eastern Catalytic 40684 Catalytic Converter, Front Side
Eastern Catalytic
Eastern Catalytic 40684 Catalytic Converter, Front Side
$561.99
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: 2006 Audi A4
Item LocatedUnited States
Quantity1
Installation PositionFront
Part interchange
40684
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Eastern Catalytic 40300 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 40300 Catalytic Converter
$601.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
40300
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MagnaFlow 5411306 Catalytic Converter
MagnaFlow
MagnaFlow 5411306 Catalytic Converter
$665.99
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: 2006 Audi A4
Item LocatedUnited States
Quantity1
Part interchange
5411306
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Catalytic Converter - Walker 15034
Walker
Walker 15034 Catalytic Converter, Exhaust
$167.99
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: 2006 Audi A4
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
15034, SC207, 602507, 6007, 602007, 70430, SC217, 6507
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Catalytic Converter - Walker 15039
Walker
Walker 15039 Catalytic Converter, Exhaust
$150.99
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: 2006 Audi A4
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
15039, 602207, 94109, 83167, 6907, 93167, 70330, 94009, 
...View more
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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!