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GMC PartsGMC Sierra 2500 HD Classic PartsCatalytic Converter

GMC Sierra 2500 HD Classic Catalytic Converter

Your Sierra 2500 HD Classic is a prized possession.

Select Your VehicleMake no mistake, you didn't buy your Sierra 2500 HD Classic unless you understood you would be getting performance and great value both impeccably combined into one automobile. Anyone who operates a GMC knows that when it comes to maintaining their car, truck, or SUV only the most superior replacement parts will do. GMC car, truck, or SUV owners have grown accustomed to a certain level of dependability when driving their Sierra 2500 HD Classic around town. The vehicle in your driveway is head and shoulders above the rest when it comes to all the cars, trucks, and SUVs in today's marketplace.

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

Achieving maximum fuel efficiency while reducing emissions on your car or truck depends on your use of properly functioning exhaust and emissions parts. Your GMC Sierra 2500 HD Classic catalytic converter is the result of about a decade of engineering that took place in the 1960s and 70s. Inside every catalytic converter are cells made from platinum and/or rhodium arranged in a honeycomb pattern that change the harmful emissions of your GMC Sierra 2500 HD Classic 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.

There's no better place for all the top brands.

At Car Parts Discount, we have live customer service members available with enough expertise to help you select the correct GMC Sierra 2500 HD Classic part for your needs. When your GMC needs the best replacement Catalytic Converter, there's no need to go somewhere besides the authority, Car Parts Discount. Bring your Sierra 2500 HD Classic back to life with the highest quality replacement parts from the experts at Car Parts Discount. All the GMC Sierra 2500 HD Classic Catalytic Converter parts on this page will fit vehicles made in 2007. 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.
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GMC Sierra 2500 HD Classic Catalytic Converter, OEM: 99109HM
2007 GMC Sierra 2500 HD Classic Magnaflow Catalytic Converter 99109HM
Add for Price, Save 6%   NEW ITEM
OEM: 99109HM, Item: 1411087
  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, Left

GMC Sierra 2500 HD Classic Catalytic Converter, OEM: 51109
2007 GMC Sierra 2500 HD Classic Magnaflow Catalytic Converter 51109
Add for Price, Save 20%   NEW ITEM
OEM: 51109, Item: 1411086
  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, Left

GMC Sierra 2500 HD Classic Catalytic Converter, OEM: 51009
2007 GMC Sierra 2500 HD Classic Magnaflow Catalytic Converter 51009
Add for Price,   NEW ITEM
OEM: 51009, Item: 1257262
  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

GMC Sierra 2500 HD Classic Catalytic Converter, OEM: 93239Walker
2007 GMC Sierra 2500 HD Classic Walker Catalytic Converter 93239
96.15, Save 39%   NEW ITEM
OEM: 93239, Item: 1148318
  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, Left

GMC Sierra 2500 HD Classic Catalytic Converter, OEM: 23781
2007 GMC Sierra 2500 HD Classic Magnaflow Catalytic Converter 23781
Add for Price, Save 21%   NEW ITEM
OEM: 23781, Item: 1300702
  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

GMC Sierra 2500 HD Classic Catalytic Converter, OEM: 49006
2007 GMC Sierra 2500 HD Classic Magnaflow Catalytic Converter 49006
Add for Price, Save 21%   NEW ITEM
OEM: 49006, Item: 1300708
  Only 5 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

GMC Sierra 2500 HD Classic Catalytic Converter, OEM: 55622Walker
2007 GMC Sierra 2500 HD Classic Walker Catalytic Converter 55622
333.85, Save 39%   NEW ITEM
OEM: 55622, Item: 1147731
  Only 1 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Classic Catalytic Converter, OEM: 545009
2007 GMC Sierra 2500 HD Classic Magnaflow Catalytic Converter 545009
Add for Price, Save 20%   NEW ITEM
OEM: 545009, Item: 1411119
  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

GMC Sierra 2500 HD Classic EPA Ultra Direct Fit Converter, OEM: 53538Walker
2007 GMC Sierra 2500 HD Classic Walker EPA Ultra Direct Fit Converter 53538
343.15, Save 39%   NEW ITEM
OEM: 53538, Item: 660609
  Only 1 left In Stock, Usually ships within 1 business day
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Vehicle Install Locations: Right

GMC Sierra 2500 HD Classic Catalytic Converter, OEM: 53726Walker
2007 GMC Sierra 2500 HD Classic Walker Catalytic Converter 53726
383.65, Save 39%   NEW ITEM
OEM: 53726, Item: 1147053
  Only 1 left In Stock, Usually ships within 1 business day
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Vehicle Install Locations: Right

GMC Sierra 2500 HD Classic Catalytic Converter, OEM: 55557Walker
2007 GMC Sierra 2500 HD Classic Walker Catalytic Converter 55557
398.75, Save 39%   NEW ITEM
OEM: 55557, Item: 358278
  Only 8 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 Walker directly for.. (more)

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Vehicle Install Locations: Left

GMC Sierra 2500 HD Classic EPA Ultra Direct Fit Converter, OEM: 50566Walker
2007 GMC Sierra 2500 HD Classic Walker EPA Ultra Direct Fit Converter 50566
539.95, Save 39%   NEW ITEM
OEM: 50566, Item: 559389
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Classic Catalytic Converter, OEM: 83404Walker
2007 GMC Sierra 2500 HD Classic Walker Catalytic Converter 83404
162.75, Save 39%   NO STOCK
OEM: 83404, Item: 1501266
  Restock date not known
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Vehicle Install Locations: Left, Right