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Cadillac PartsCadillac STS PartsCatalytic Converter

Cadillac STS Catalytic Converter

Your STS is a prized possession.

It's not a regular occurrence that you find yourself in need of a replacement Catalytic Converter to repair your automobile. While it may not be difficult to buy replacement parts for Cadillac vehicles, these days the necessity for nothing but the absolute best are required to repair your automobile. Car aficionados appreciate the luxury built into each Cadillac, and know that only top quality repair STS parts will suffice when your car or truck needs fixing. Anyone who operates a Cadillac knows that when it comes to fixing their automobile only the absolute best replacement parts will do.

Why Catalytic Converter replacement is so important.

Getting the most out of your car or truck depends on how well you maintain your engine and exhaust parts. Your Cadillac STS 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 change the harmful emissions of your Cadillac STS from carbon monoxide and hydrocarbons to carbon dioxide and water. This process revolutionized automakers' ability to improve air quality, which is why every vehicle made today has a catalytic converter.

The best auto parts .

Select Your YearGiven all the trouble that can be involved with repairing damage to your car or truck, let www.carpartsdiscount.com be the first place you go to make purchasing it easy. When your Cadillac needs the best replacement Catalytic Converter, there's no need to go somewhere besides the authority, Car Parts Discount. At Car Parts Discount, we have real customer support agents on the phone with enough expertise to help you select the appropriate Cadillac STS part for your project or repair. Cadillac STS Catalytic Converter parts for 2011, 2010, 2009, 2008, 2007, 2006, 2005 vehicles are available here... just click your year to find them.

Info: Select your make and model in the red title bar above so we can show the parts you need.
Cadillac STS Catalytic Converter, OEM: 99204HM
2005-2007 Cadillac STS Magnaflow Catalytic Converter 99204HM
Add for Price, Save 21%   NEW ITEM
OEM: 99204HM, Item: 1256349
  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, Right

Cadillac STS Universal Catalytic Converter, OEM: 93252Walker
2005 Cadillac STS Walker Universal Catalytic Converter 93252
87.95, Save 39%   POPULAR
OEM: 93252, Item: 358375
  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 Walker directly for.. (more)

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

Vehicle Install Locations: Left, Right

Cadillac STS Catalytic Converter, OEM: 51204
2005-2007 Cadillac STS Magnaflow Catalytic Converter 51204
Add for Price, Save 20%   NEW ITEM
OEM: 51204, Item: 1292888
  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: Left, Right

Cadillac STS Catalytic Converter, OEM: 51205
2008-2009 Cadillac STS Magnaflow Catalytic Converter 51205
Add for Price, Save 21%   NEW ITEM
OEM: 51205, Item: 1256703
  Only 2 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, Right

Cadillac STS Catalytic Converter, OEM: 82815Walker
2006-2011 Cadillac STS Walker Catalytic Converter 82815
158.85, Save 39%   POPULAR
OEM: 82815, Item: 1229508
  Only 9 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left, Right

Cadillac STS Catalytic Converter, OEM: 448004
2005 Cadillac STS Magnaflow Catalytic Converter 448004
Add for Price, Save 16%   POPULAR
OEM: 448004, Item: 1226695
  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: Left, Right

Flowmaster
2005-2006 Cadillac STS Flowmaster Catalytic Converter 940334
180.35, Save 39%   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: Left, Right

Cadillac STS Catalytic Converter, OEM: 24232
2005-2007 Cadillac STS Magnaflow Catalytic Converter 24232
Add for Price, Save 22%   NEW ITEM
OEM: 24232, Item: 1258234
  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

Cadillac STS Catalytic Converter, OEM: 24403
2005-2007 Cadillac STS Magnaflow Catalytic Converter 24403
Add for Price, Save 22%   NEW ITEM
OEM: 24403, Item: 1301908
  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

Cadillac STS Catalytic Converter, OEM: 49170
2008-2011 Cadillac STS Magnaflow Catalytic Converter 49170
Add for Price, Save 19%   POPULAR
OEM: 49170, Item: 1258351
  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: Left

Cadillac STS Catalytic Converter, OEM: 079-5238/0795238Bosal
2005-2007 Cadillac STS Bosal Catalytic Converter 079-5238
225.85, Save 39%   NEW ITEM
OEM: 079-5238, Item: 1244339
  Only 9 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left

Cadillac STS Catalytic Converter, OEM: 49171
2008-2011 Cadillac STS Magnaflow Catalytic Converter 49171
Add for Price, Save 19%   NEW ITEM
OEM: 49171, Item: 1258352
  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

Cadillac STS Catalytic Converter, OEM: 079-5237/0795237Bosal
2005-2007 Cadillac STS Bosal Catalytic Converter 079-5237
228.35, Save 39%   NEW ITEM
OEM: 079-5237, Item: 1244338
  Only 8 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Right

Cadillac STS Catalytic Converter, OEM: 16684Walker
2008-2011 Cadillac STS Walker Catalytic Converter 16684
239.15, Save 39%   NEW ITEM
OEM: 16684, Item: 1229334
  Only 7 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Right

Cadillac STS Catalytic Converter, OEM: 16685Walker
2008-2011 Cadillac STS Walker Catalytic Converter 16685
239.15, Save 39%   NEW ITEM
OEM: 16685, Item: 1229335
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left

Cadillac STS Catalytic Converter, OEM: 546004
2006-2007 Cadillac STS Magnaflow Catalytic Converter 546004
Add for Price, Save 23%   NEW ITEM
OEM: 546004, Item: 1411067
  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, Right

Cadillac STS Catalytic Converter, OEM: 546305
2008 Cadillac STS Magnaflow Catalytic Converter 546305
Add for Price, Save 23%   NEW ITEM
OEM: 546305, Item: 1259097
  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, Right

Cadillac STS Catalytic Converter, OEM: 50444Eastern Catalytic
2005-2007 Cadillac STS Eastern Catalytic Catalytic Converter 50444
248.05, Save 39%   NEW ITEM
OEM: 50444, Item: 1005342
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Right

Cadillac STS Catalytic Converter, OEM: 51502
2005-2007 Cadillac STS Magnaflow Catalytic Converter 51502
Add for Price, Save 21%   NEW ITEM
OEM: 51502, Item: 1257284
  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

Cadillac STS Catalytic Converter, OEM: 51617
2005-2007 Cadillac STS Magnaflow Catalytic Converter 51617
Add for Price, Save 21%   NEW ITEM
OEM: 51617, Item: 1412860
  Only 6 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

Cadillac STS Catalytic Converter, OEM: 50443Eastern Catalytic
2005-2007 Cadillac STS Eastern Catalytic Catalytic Converter 50443
255.45, Save 39%   NEW ITEM
OEM: 50443, Item: 1005341
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left

Cadillac STS Catalytic Converter, OEM: GM20376DDEC
2005-2007 Cadillac STS DEC Catalytic Converter GM20376D
Add for Price, Save 31%   NEW ITEM
OEM: GM20376D, Item: 467849
  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

Cadillac STS Catalytic Converter, OEM: GM20376PDEC
2005-2007 Cadillac STS DEC Catalytic Converter GM20376P
Add for Price, Save 31%   NEW ITEM
OEM: GM20376P, Item: 467850
  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

Cadillac STS Exhaust Manifold & Catalytic Converter, OEM: 674-930/674930Dorman
2005-2010 Cadillac STS Dorman Exhaust Manifold & Catalytic Converter 674-930
Add for Price, Save 28%   NEW ITEM
OEM: 674-930, Item: 401378
  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 Dorman directly for.. (more)

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

Vehicle Install Locations: Right

Cadillac STS Exhaust Manifold with Integrated Catalytic Converter, OEM: 50761
2005-2006 Cadillac STS Magnaflow Exhaust Manifold with Integrated Catalytic Converter 50761
Add for Price, Save 21%   NEW ITEM
OEM: 50761, Item: 1256919
  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: Right

Cadillac STS Exhaust Manifold with Integrated Catalytic Converter, OEM: 16622Walker
2005-2006 Cadillac STS Walker Exhaust Manifold with Integrated Catalytic Converter 16622
329.55, Save 39%   NEW ITEM
OEM: 16622, Item: 1144406
  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: Left

Cadillac STS Exhaust Manifold with Integrated Catalytic Converter, OEM: 51130
2006-2009 Cadillac STS Magnaflow Exhaust Manifold with Integrated Catalytic Converter 51130
Add for Price, Save 21%   NEW ITEM
OEM: 51130, Item: 1256918
  Only 8 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

Cadillac STS Exhaust Manifold with Integrated Catalytic Converter, OEM: 51131
2006-2009 Cadillac STS Magnaflow Exhaust Manifold with Integrated Catalytic Converter 51131
Add for Price, Save 21%   NEW ITEM
OEM: 51131, Item: 1356564
  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: Right

Cadillac STS Exhaust Manifold & Catalytic Converter, OEM: 674-931/674931Dorman
2005-2010 Cadillac STS Dorman Exhaust Manifold & Catalytic Converter 674-931
Add for Price, Save 28%   NEW ITEM
OEM: 674-931, Item: 401379
  Only 6 left 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 Dorman directly for.. (more)

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

Vehicle Install Locations: Left

Cadillac STS Exhaust Manifold with Integrated Catalytic Converter, OEM: 51070
2005-2010 Cadillac STS Magnaflow Exhaust Manifold with Integrated Catalytic Converter 51070
Add for Price, Save 19%   NEW ITEM
OEM: 51070, Item: 1326466
  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

Cadillac STS Exhaust Manifold with Integrated Catalytic Converter, OEM: 51071
2005-2010 Cadillac STS Magnaflow Exhaust Manifold with Integrated Catalytic Converter 51071
Add for Price, Save 21%   NEW ITEM
OEM: 51071, Item: 1256756
  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

Cadillac STS Exhaust Manifold with Integrated Catalytic Converter, OEM: GM20367DEC
2005-2006 Cadillac STS DEC Exhaust Manifold with Integrated Catalytic Converter GM20367
Add for Price, Save 31%   NEW ITEM
OEM: GM20367, Item: 467842
  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

Cadillac STS Exhaust Manifold with Integrated Catalytic Converter, OEM: GM20373DEC
2005-2006 Cadillac STS DEC Exhaust Manifold with Integrated Catalytic Converter GM20373
Add for Price, Save 31%   NEW ITEM
OEM: GM20373, Item: 467848
  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

Cadillac STS Exhaust Manifold with Integrated Catalytic Converter, OEM: 673-930/673930Dorman
2005-2006 Cadillac STS Dorman Exhaust Manifold with Integrated Catalytic Converter 673-930
370.65, Save 39%   NEW ITEM
OEM: 673-930, Item: 591332
  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: Right

Cadillac STS Exhaust Manifold with Integrated Catalytic Converter, OEM: 50465Eastern Catalytic
2005-2010 Cadillac STS Eastern Catalytic Exhaust Manifold with Integrated Catalytic Converter 50465
376.75, Save 39%   NEW ITEM
OEM: 50465, Item: 1161622
  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: Right

Cadillac STS Exhaust Manifold with Integrated Catalytic Converter, OEM: 673-931/673931Dorman
2005-2006 Cadillac STS Dorman Exhaust Manifold with Integrated Catalytic Converter 673-931
377.05, Save 39%   NEW ITEM
OEM: 673-931, Item: 591333
  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

Cadillac STS Catalytic Converter, OEM: 448018
2005 Cadillac STS Magnaflow Catalytic Converter 448018
Add for Price, Save 21%   NEW ITEM
OEM: 448018, Item: 1452497
  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

DEC
2005-2006 Cadillac STS DEC Catalytic Converter GM6C20367
480.45, Save 39%   NEW ITEM
OEM: GM6C20367, Item: 1307148
  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

Cadillac STS Catalytic Converter, OEM: 546617
2006-2007 Cadillac STS Magnaflow Catalytic Converter 546617
Add for Price, Save 20%   NEW ITEM
OEM: 546617, Item: 1386701
  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: Right

Cadillac STS Catalytic Converter, OEM: 546170
2008 Cadillac STS Magnaflow Catalytic Converter 546170
Add for Price, Save 19%   NO STOCK
OEM: 546170, Item: 1419578
  Restock date not known
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Left