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Audi PartsAudi S4 PartsCatalytic Converter

Audi S4 Catalytic Converter

Great cars and trucks like your S4 need great parts.

Select Your VehicleYour Audi dealership isn't the only place to buy genuine or original equipment quality repair parts to fix your S4. Obviously, you didn't buy your S4 unless you understood you would be getting long-lasting quality and dependability both impeccably combined into one car, truck, or SUV. You picked your S4 because its a reputation for performance and German engineering struck a chord inside you; so why would you settle for second rate when it comes to the highest quality auto parts? Anyone who operates a Audi knows that when it comes to fixing their automobile only the absolute best replacement parts will do.

Don't go too long without fixing your Catalytic Converter... here's why.

Getting the most out of your car or truck depends on how well you maintain your engine and exhaust parts. Your Audi S4 catalytic converter is likely the single most effective pollution control device on production vehicles today. There are a host of precious metals, mostly platinum, in the catalytic converter that turn the carbon monoxide and hydrocarbons that your Audi S4 produces into harmless molecules of carbon dioxide, oxygen, and some water. Thanks to this chemical reaction, automakers could now curb their contribution to air pollution, which is why every vehicle made today has a catalytic converter.

You've tried the rest, now try the best.

Don't let a Catalytic Converter repair bring about the demise of your car, truck, or SUV, and don't risk lowering its resale value by using anything but the highest quality replacement parts. When your Audi requires a new replacement Catalytic Converter, there's no need to waste time looking anywhere other than the authority, Car Parts Discount. At Car Parts Discount, we have live customer service members here with enough expertise to help you select the correct Audi S4 part for your needs. All the Audi S4 Catalytic Converter parts on this page will fit vehicles made in 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2002, 2001, 2000, 1994, 1993, 1992. Choose your year below to refine your search.

Info: Select your make and model in the red title bar above so we can show the parts you need.
Flowmaster
1992-1994 Audi S4 Flowmaster Catalytic Converter 2220120
Add for Price, Save 12%   NEW ITEM
OEM: 2220120, Item: 1444652
  In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

Audi S4 Catalytic Converter, OEM: 53004
1992-1994 Audi S4 Magnaflow Catalytic Converter 53004
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OEM: 53004, Item: 1256339
  Only 3 left In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Audi S4 EPA Standard Universal Converter, OEM: 15051Walker
1992-1994 Audi S4 Walker EPA Standard Universal Converter 15051
54.65, Save 39%   NEW ITEM
OEM: 15051, Item: 661937
  In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

Audi S4 Catalytic Converter, OEM: 99204HM
2004-2009 Audi S4 Magnaflow Catalytic Converter 99204HM
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OEM: 99204HM, Item: 1256349
  Only 1 left In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Rear Left, Rear Right

Audi S4 Catalytic Converter, OEM: 441005
2001-2002 Audi S4 Magnaflow Catalytic Converter 441005
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OEM: 441005, Item: 1226504
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Rear Left, Rear Right

Audi S4 Catalytic Converter, OEM: 99005HM
2000-2002 Audi S4 Magnaflow Catalytic Converter 99005HM
Add for Price, Save 21%   NEW ITEM
OEM: 99005HM, Item: 1256388
  Only 4 left In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Front Left, Front Right, Rear Left, Rear Right

Audi S4 Catalytic Converter, OEM: 51204
2004-2009 Audi S4 Magnaflow Catalytic Converter 51204
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OEM: 51204, Item: 1292888
  Only 1 left In Stock, Usually ships within 1 business day
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Vehicle Install Locations: Rear Left, Rear Right

Audi S4 Universal Catalytic Converter, OEM: 81652Walker
2004 Audi S4 Walker Universal Catalytic Converter 81652
105.05, Save 39%   POPULAR
OEM: 81652, Item: 417690
  Only 3 left In Stock, Usually ships within 1 business day

This catalytic converter is compliant with C.A.R.B. rules, restrictions, and specifications. It can be installed on a vehicle in California as well as other municipalities that use this emissions standard. Before purchasing a new catalytic converter, consult your local regulatory agency, emissions testing facility, or mechanic for approval. Federal laws require all warranty claims be processed by the manufacturer of this emissions control device. Please contact Walker directly for replacement.. (more)

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Rear Left, Rear Right

Audi S4 Catalytic Converter, OEM: 51005
2000-2002 Audi S4 Magnaflow Catalytic Converter 51005
Add for Price, Save 25%   NEW ITEM
OEM: 51005, Item: 1256735
  In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Front Left, Front Right, Rear Left, Rear Right

Audi S4 Catalytic Converter, OEM: 81101Walker
1992-1994 Audi S4 Walker Catalytic Converter 81101
115.45, Save 39%   NEW ITEM
OEM: 81101, Item: 1294722
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Audi S4 Catalytic Converter, OEM: 444506
2005 Audi S4 Magnaflow Catalytic Converter 444506
Add for Price, Save 24%   NEW ITEM
OEM: 444506, Item: 1257628
  In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Front Left, Front Right

Audi S4 Catalytic Converter, OEM: 81660Walker
2000-2002 Audi S4 Walker Catalytic Converter 81660
130.55, Save 39%   NEW ITEM
OEM: 81660, Item: 1147937
  Only 5 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Rear Left, Rear Right

Audi S4 Catalytic Converter, OEM: 542205
2007-2009 Audi S4 Magnaflow Catalytic Converter 542205
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OEM: 542205, Item: 1258037
  In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Rear Left, Rear Right

Audi S4 CalCat Universal Converter, OEM: 81804Walker
2000-2002, 2004 Audi S4 Walker CalCat Universal Converter 81804
110.41, Save 49%   NEW ITEMPOPULAR
OEM: 81804, Item: 660379
  Only 3 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Front Left, Front Right

Audi S4 Catalytic Converter, OEM: 441204
2004, 2006 Audi S4 Magnaflow Catalytic Converter 441204
Add for Price, Save 24%   NEW ITEM
OEM: 441204, Item: 1257589
  In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Rear Left, Rear Right

Audi S4 Catalytic Converter, OEM: 441205
2000 Audi S4 Magnaflow Catalytic Converter 441205
Add for Price, Save 24%   NEW ITEM
OEM: 441205, Item: 1257590
  In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Rear Left, Rear Right

Audi S4 Catalytic Converter, OEM: 332304
1992-1994 Audi S4 Magnaflow Catalytic Converter 332304
Add for Price, Save 18%  
OEM: 332304, Item: 1226464
  Only 4 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Audi S4 Catalytic Converter, OEM: 444005
2001-2002 Audi S4 Magnaflow Catalytic Converter 444005
Add for Price, Save 20%   NEW ITEM
OEM: 444005, Item: 1226541
  Only 2 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Front Left, Front Right

Audi S4 Catalytic Converter, OEM: 441334
2000 Audi S4 Magnaflow Catalytic Converter 441334
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OEM: 441334, Item: 1256364
  In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Rear Right

Audi S4 Catalytic Converter, OEM: 444006
2001-2002 Audi S4 Magnaflow Catalytic Converter 444006
Add for Price, Save 24%   NEW ITEM
OEM: 444006, Item: 1452454
  In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Front

Audi S4 Catalytic Converter, OEM: 444134
2000 Audi S4 Magnaflow Catalytic Converter 444134
Add for Price, Save 24%   NEW ITEM
OEM: 444134, Item: 1257615
  In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Front

Audi S4 Catalytic Converter, OEM: 444206
2000 Audi S4 Magnaflow Catalytic Converter 444206
Add for Price, Save 24%   NEW ITEM
OEM: 444206, Item: 1257616
  In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Front Left, Front Right

Audi S4 Catalytic Converter, OEM: 861028Eastern Catalytic
1992-1994 Audi S4 Eastern Catalytic Catalytic Converter 861028
180.15, Save 39%   NEW ITEM
OEM: 861028, Item: 1005473
  Only 3 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Center

Flowmaster
2001-2002 Audi S4 Flowmaster Catalytic Converter 940334
Add for Price, Save 30%   NEW ITEM
OEM: 940334, Item: 1444645
  In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Rear

Audi S4 Catalytic Converter, OEM: AU1346DEC
1993-1994 Audi S4 DEC Catalytic Converter AU1346
Add for Price, Save 31%   NEW ITEM
OEM: AU1346, Item: 467385
  In Stock, Usually ships within 1 business day

Installation of this aftermarket catalytic converter is prohibited by law in California by C.A.R.B., and may also not comply with emissions regulations in other municipalities in other parts of the US and Canada. Before purchasing a new catalytic converter, consult your local regulatory agency, emissions testing facility, or mechanic for approval. Federal laws require all warranty claims be processed by the manufacturer of this emissions control device. Please contact DEC directly for.. (more)

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left

Audi S4 Catalytic Converter, OEM: AU81346DEC
1993-1994 Audi S4 DEC Catalytic Converter AU81346
Add for Price, Save 31%   NEW ITEM
OEM: AU81346, Item: 467430
  In Stock, Usually ships within 1 business day

This catalytic converter is compliant with C.A.R.B. rules, restrictions, and specifications. It can be installed on a vehicle in California as well as other municipalities that use this emissions standard. Before purchasing a new catalytic converter, consult your local regulatory agency, emissions testing facility, or mechanic for approval. Federal laws require all warranty claims be processed by the manufacturer of this emissions control device. Please contact DEC directly for replacement.. (more)

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left

Audi S4 Catalytic Converter, OEM: 541305
2007-2009 Audi S4 Magnaflow Catalytic Converter 541305
Add for Price, Save 22%   NEW ITEM
OEM: 541305, Item: 1302105
  Only 1 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Front Left, Front Right

Audi S4 Catalytic Converter, OEM: 49135
2010-2012 Audi S4 Magnaflow Catalytic Converter 49135
Add for Price, Save 21%   NEW ITEM
OEM: 49135, Item: 1356558
  Only 2 left In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left

Audi S4 Catalytic Converter, OEM: AU1369DDEC
2000-2002 Audi S4 DEC Catalytic Converter AU1369D
Add for Price, Save 31%   NEW ITEM
OEM: AU1369D, Item: 467393
  In Stock, Usually ships within 1 business day

Installation of this aftermarket catalytic converter is prohibited by law in California by C.A.R.B., and may also not comply with emissions regulations in other municipalities in other parts of the US and Canada. Before purchasing a new catalytic converter, consult your local regulatory agency, emissions testing facility, or mechanic for approval. Federal laws require all warranty claims be processed by the manufacturer of this emissions control device. Please contact DEC directly for.. (more)

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left

Audi S4 Catalytic Converter, OEM: AU1369PDEC
2000-2002 Audi S4 DEC Catalytic Converter AU1369P
Add for Price, Save 31%   NEW ITEM
OEM: AU1369P, Item: 467394
  In Stock, Usually ships within 1 business day

Installation of this aftermarket catalytic converter is prohibited by law in California by C.A.R.B., and may also not comply with emissions regulations in other municipalities in other parts of the US and Canada. Before purchasing a new catalytic converter, consult your local regulatory agency, emissions testing facility, or mechanic for approval. Federal laws require all warranty claims be processed by the manufacturer of this emissions control device. Please contact DEC directly for.. (more)

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Right

Audi S4 Catalytic Converter and Pipe Assembly, OEM: AU1370PDEC
2004-2008 Audi S4 DEC Catalytic Converter and Pipe Assembly AU1370P
Add for Price, Save 31%   NEW ITEM
OEM: AU1370P, Item: 467396
  In Stock, Usually ships within 1 business day

Installation of this aftermarket catalytic converter is prohibited by law in California by C.A.R.B., and may also not comply with emissions regulations in other municipalities in other parts of the US and Canada. Before purchasing a new catalytic converter, consult your local regulatory agency, emissions testing facility, or mechanic for approval. Federal laws require all warranty claims be processed by the manufacturer of this emissions control device. Please contact DEC directly for.. (more)

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Right

Audi S4 Catalytic Converter, OEM: 49914
2000-2002 Audi S4 Magnaflow Catalytic Converter 49914
Add for Price, Save 20%   NEW ITEM
OEM: 49914, Item: 1258455
  Only 1 left In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Right

Audi S4 Catalytic Converter, OEM: 24314
2000-2002 Audi S4 Magnaflow Catalytic Converter 24314
Add for Price, Save 20%   NEW ITEM
OEM: 24314, Item: 1258248
  Only 1 left In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Right

Audi S4 Catalytic Converter, OEM: 23612
2000-2002 Audi S4 Magnaflow Catalytic Converter 23612
Add for Price, Save 20%   NEW ITEM
OEM: 23612, Item: 1258141
  Only 9 left In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left

Audi S4 Catalytic Converter, OEM: 23613
2000-2002 Audi S4 Magnaflow Catalytic Converter 23613
Add for Price, Save 20%   NEW ITEM
OEM: 23613, Item: 1258142
  In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Right

Audi S4 Catalytic Converter, OEM: 49918
2004-2009 Audi S4 Magnaflow Catalytic Converter 49918
Add for Price, Save 20%   NEW ITEM
OEM: 49918, Item: 1258457
  Only 1 left In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Right

Audi S4 Catalytic Converter, OEM: 49915
2000-2002 Audi S4 Magnaflow Catalytic Converter 49915
Add for Price, Save 20%   NEW ITEM
OEM: 49915, Item: 1256242
  Only 4 left In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left

Audi S4 Catalytic Converter, OEM: 49916
2000-2002 Audi S4 Magnaflow Catalytic Converter 49916
Add for Price, Save 20%   NEW ITEM
OEM: 49916, Item: 1255969
  Only 3 left In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Right

Audi S4 Catalytic Converter, OEM: 49913
2000-2002 Audi S4 Magnaflow Catalytic Converter 49913
Add for Price, Save 20%   NEW ITEM
OEM: 49913, Item: 1387933
  Only 1 left In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left

Audi S4 Catalytic Converter, OEM: 441093
2001-2002 Audi S4 Magnaflow Catalytic Converter 441093
Add for Price, Save 20%   NEW ITEM
OEM: 441093, Item: 1410867
  Only 3 left In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left

Audi S4 Catalytic Converter, OEM: 441094
2001-2002 Audi S4 Magnaflow Catalytic Converter 441094
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OEM: 441094, Item: 1421610
  Only 2 left In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Right

Audi S4 Catalytic Converter, OEM: 441091
2001-2002 Audi S4 Magnaflow Catalytic Converter 441091
Add for Price, Save 20%   NEW ITEM
OEM: 441091, Item: 1257584
  Only 4 left In Stock, Usually ships within 1-2 business days

If C.A.R.B. number is not provided, item is not California legal

Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left

Audi S4 Catalytic Converter, OEM: 441095
2004-2006 Audi S4 Magnaflow Catalytic Converter 441095
Add for Price, Save 20%   NEW ITEM
OEM: 441095, Item: 1378947
  Only 3 left In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left, Rear Left

Audi S4 Catalytic Converter, OEM: 441096
2004-2006 Audi S4 Magnaflow Catalytic Converter 441096
Add for Price, Save 19%   NO STOCK
OEM: 441096, Item: 1257586
  Restock date not known
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Vehicle Install Locations: Right, Rear Right