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2017 GMC Sierra 2500 HD

2017 GMC Sierra 2500 HD Catalytic Converters

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Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), ULEV Emission, With 2 Converter System, Undercar -
Part Number: EC96030023
Guaranteed to Fit
$757.99
Vehicle Fitment
  • 2017 GMC Sierra 2500 HD SLT 8 Cyl 6.0L ULEV Emission, With 2 Converter System, Undercar
  • 2017 GMC Sierra 2500 HD Denali 8 Cyl 6.0L ULEV Emission, With 2 Converter System, Undercar
  • 2017 GMC Sierra 2500 HD Base 8 Cyl 6.0L ULEV Emission, With 2 Converter System, Undercar
  • 2017 GMC Sierra 2500 HD SLE 8 Cyl 6.0L ULEV Emission, With 2 Converter System, Undercar
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Restricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile Evan Fischer limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Replaces OE Number : 19420277Interchange Part Number : 50486, 19420277
OEM Grade Series Semi-Universal (Welding Required) Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6651659
Guaranteed to Fit
$281.00
Vehicle Fitment
  • 2017 GMC Sierra 2500 HD Denali 8 Cyl 6.0L
  • 2017 GMC Sierra 2500 HD SLT 8 Cyl 6.0L
  • 2017 GMC Sierra 2500 HD Base 8 Cyl 6.0L
  • 2017 GMC Sierra 2500 HD SLE 8 Cyl 6.0L
Product Details
Location : RearEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 3 in. Inlet/OutletProduct Fit : Semi-Universal (Welding Required)Recommended Use : Performance ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : Magnaflow 25,000 Mile Limited WarrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : OEM Grade SeriesTube Material : Stainless Steel
OEM Grade Series Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6651812
Guaranteed to Fit
$1,509.00
Vehicle Fitment
  • 2017 GMC Sierra 2500 HD Denali 8 Cyl 6.0L For Vehicles Originally Equipped With 3 Catalytic Converter
  • 2017 GMC Sierra 2500 HD Base 8 Cyl 6.0L For Vehicles Originally Equipped With 3 Catalytic Converter
  • 2017 GMC Sierra 2500 HD SLT 8 Cyl 6.0L For Vehicles Originally Equipped With 3 Catalytic Converter
  • 2017 GMC Sierra 2500 HD SLE 8 Cyl 6.0L For Vehicles Originally Equipped With 3 Catalytic Converter
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 63.88 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Magnaflow limited warranty on Construction; 25,000-mile Magnaflow limited warranty on EmissionsProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : OEM Grade SeriesTube Material : Stainless Steel
OEM Grade Series Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6621252
Guaranteed to Fit
$927.00
Vehicle Fitment
  • 2017 GMC Sierra 2500 HD Denali 8 Cyl 6.0L With Dual Catalytic Converters
  • 2017 GMC Sierra 2500 HD Base 8 Cyl 6.0L With Dual Catalytic Converters
  • 2017 GMC Sierra 2500 HD SLT 8 Cyl 6.0L With Dual Catalytic Converters
  • 2017 GMC Sierra 2500 HD SLE 8 Cyl 6.0L With Dual Catalytic Converters
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 64.5 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Magnaflow limited warranty on Construction; 25,000-mile Magnaflow limited warranty on EmissionsProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : OEM Grade SeriesTube Material : Stainless Steel
Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: EAST50486
Guaranteed to Fit
$612.99
Vehicle Fitment
  • 2017 GMC Sierra 2500 HD SLT 8 Cyl 6.0L ULEV Emission, With 2 Converter System, Undercar
  • 2017 GMC Sierra 2500 HD Denali 8 Cyl 6.0L ULEV Emission, With 2 Converter System, Undercar
  • 2017 GMC Sierra 2500 HD Base 8 Cyl 6.0L ULEV Emission, With 2 Converter System, Undercar
  • 2017 GMC Sierra 2500 HD SLE 8 Cyl 6.0L ULEV Emission, With 2 Converter System, Undercar
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 34 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Eastern limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : EC96030023Tube Material : Aluminized Steel
Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: APE645184
Guaranteed to Fit
$631.49
Vehicle Fitment
  • 2017 GMC Sierra 2500 HD SLT 8 Cyl 6.0L Extended Cab Pickup, Direct Fit; ULEV Emissions, With 2 Conv. Bodies
  • 2017 GMC Sierra 2500 HD Denali 8 Cyl 6.0L Crew Cab Pickup, Direct Fit; ULEV Emissions, With 2 Conv. Bodies
  • 2017 GMC Sierra 2500 HD Base 8 Cyl 6.0L Standard Cab Pickup, Direct Fit; ULEV Emissions, With 2 Conv. Bodies
  • 2017 GMC Sierra 2500 HD SLE 8 Cyl 6.0L Standard Cab Pickup, Direct Fit; ULEV Emissions, With 2 Conv. Bodies
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 34 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile AP Exhaust limited warranty on converter body and 25,000-mile limited warranty on emissionsProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Tube Material : Stainless Steel
No Returns Accepted - Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be used in vehicles originally purchased in CA, CO, NY or ME), Semi-Universal (Welding Required)
Part Number: EAST70857
Guaranteed to Fit
$239.49
Vehicle Fitment
  • 2017 GMC Sierra 2500 HD Denali 8 Cyl 6.0L
  • 2017 GMC Sierra 2500 HD SLT 8 Cyl 6.0L
  • 2017 GMC Sierra 2500 HD Base 8 Cyl 6.0L
  • 2017 GMC Sierra 2500 HD SLE 8 Cyl 6.0L
Product Details
Location : FrontEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 3 in. Inlet and Outlet Diameter; Without O2 Sensor Port; 16 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketWarranty : 5-year or 50,000-mile Eastern limited warrantyReturns Policy : NON-RETURNABLEProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Tube Material : Aluminized Steel
Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: CAT9545
Guaranteed to Fit
$710.99
Vehicle Fitment
  • 2017 GMC Sierra 2500 HD SLT 8 Cyl 6.0L Extended Cab Pickup, ULEV Emissions, with 2 Conv. Bodies, Federal and California Emissions
  • 2017 GMC Sierra 2500 HD Denali 8 Cyl 6.0L Crew Cab Pickup, ULEV Emissions, with 2 Conv. Bodies, Federal and California Emissions
  • 2017 GMC Sierra 2500 HD Base 8 Cyl 6.0L Crew Cab Pickup, ULEV Emissions, with 2 Conv. Bodies, Federal and California Emissions
  • 2017 GMC Sierra 2500 HD SLE 8 Cyl 6.0L Standard Cab Pickup, ULEV Emissions, with 2 Conv. Bodies, Federal and California Emissions
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 34 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Catco limited warranty on converter body with 25,000-mile limited warranty on emissionsProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Tube Material : Stainless Steel
Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: CAT9584
Guaranteed to Fit
$790.49
Vehicle Fitment
  • 2017 GMC Sierra 2500 HD SLT 8 Cyl 6.0L with 3 Conv. Bodies, Federal and California Emissions
  • 2017 GMC Sierra 2500 HD Denali 8 Cyl 6.0L with 3 Conv. Bodies, Federal and California Emissions
  • 2017 GMC Sierra 2500 HD Base 8 Cyl 6.0L with 3 Conv. Bodies, Federal and California Emissions
  • 2017 GMC Sierra 2500 HD SLE 8 Cyl 6.0L with 3 Conv. Bodies, Federal and California Emissions
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 59 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Catco limited warranty on converter body with 25,000-mile limited warranty on emissionsProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Tube Material : Stainless Steel
Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: APE645154
Guaranteed to Fit
$743.49
Vehicle Fitment
  • 2017 GMC Sierra 2500 HD SLT 8 Cyl 6.0L With 3 Conv. Bodies
  • 2017 GMC Sierra 2500 HD Denali 8 Cyl 6.0L With 3 Conv. Bodies
  • 2017 GMC Sierra 2500 HD Base 8 Cyl 6.0L With 3 Conv. Bodies
  • 2017 GMC Sierra 2500 HD SLE 8 Cyl 6.0L With 3 Conv. Bodies
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 59 in. Overall Length; 3 Bolt Welded Flange Inlet Type A; 3 Bolt Loose Flange Inlet Type B; 2 Bolt Welded Flange Outlet Type A; Ceramic Substrate MaterialType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile AP Exhaust limited warranty on converter body and 25,000-mile limited warranty on emissionsProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Tube Material : Stainless Steel
Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: EAST50574
Guaranteed to Fit
$750.99
Vehicle Fitment
  • 2017 GMC Sierra 2500 HD SLT 8 Cyl 6.0L With 3 Converter System, Undercar
  • 2017 GMC Sierra 2500 HD Denali 8 Cyl 6.0L With 3 Converter System, Undercar
  • 2017 GMC Sierra 2500 HD Base 8 Cyl 6.0L With 3 Converter System, Undercar
  • 2017 GMC Sierra 2500 HD SLE 8 Cyl 6.0L With 3 Converter System, Undercar
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 59 in. Overall Length; 3 Bolt Welded Flange Inlet Type A; 2 Bolt Welded Flange Outlet Type A; Federal / EPA Direct-Fit Type; 59 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Eastern limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Tube Material : Stainless Steel
OEM Grade Series Semi-Universal (Welding Required) Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6659959
Universal Fit
$161.00
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 3 in. Inlet/OutletProduct Fit : Semi-Universal (Welding Required)Recommended Use : Performance ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : Magnaflow 25,000 Mile Limited WarrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : OEM Grade SeriesTube Material : Stainless Steel
OEM Grade Series Semi-Universal (Welding Required) Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6659956
Universal Fit
$161.00
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 2.5 in. Inlet/OutletProduct Fit : Semi-Universal (Welding Required)Recommended Use : Performance ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : Magnaflow 25,000 Mile Limited WarrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : OEM Grade SeriesTube Material : Stainless Steel
No Returns Accepted -Catalytic Converter
Part Number: CAT602387
Universal Fit
$152.49
Product Details
Product Fit : UniversalRecommended Use : OE ReplacementProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

No Returns Accepted -Catalytic Converter
Part Number: CAT608387
Universal Fit
$158.99
Product Details
Product Fit : UniversalRecommended Use : OE ReplacementProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

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Popular Products

Product Questions & Answers

Q:I have a 2005 Toyota Prius Base Model 1.5L 4cyl., are there 2 catalytic converters or just one? Show Less
B4neverafter
A:BEST ANSWERHi Brandy, I am pleased to assist you. This is a universal catalytic converter and not vehicle-specific. The 2015 Toyota Prius Base 4 Cyl 1.8L features two catalytic converters, one in the exhaust manifold and another in the underbody exhaust system. Please verify if your vehicle has Federal or CARB emissions. Let me provide you the links below for the direct-fit converters and the universal one (this part you chose) so you can choose which ones you'd prefer to order while the parts are in stock. I hope this helps and enjoy shopping! Direct-fits - https://www.carparts.com/search?q=catalytic_converter&vehicle[cylinders]=4&vehicle[liter]=1%2E8&vehicle[submodel]=Base&vehicle[model]=Prius&vehicle[make]=Toyota&vehicle[year]=2015&can=CPGG4850_CSQA_20241115 Universal - https://www.carparts.com/catalytic-converter/catco/cat602387?can=CPGG4850_CSQA_20241115 Show less
Grace G.
 
2 Questions, 1 AnswerView all Q&As >

Helpful Automotive Resources

P0430 Code: Catalyst System Efficiency Below Threshold  (Bank 2)
P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2)In most cases, a vehicle with an inefficient catalytic converter will continue to run just fine. But if the converter is obstructed internally, it can cause poor engine performance and may even damage the engine in the long run.
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3Bank 1 is the side of the engine where the #1 cylinder is located. P0042 code is set when your car’s PCM determines a potential problem with the heater element circuit of the oxygen sensor.
Can You Drive Without a Catalytic Converter?
Can You Drive Without a Catalytic Converter?Technically, yes. Older cars ran just fine before catalytic converters became commonplace in the 1970s. So, if your question is whether your car will run without one, then it most certainly will. But the other question you should be asking is—should you risk it?  Removing or disabling the catalytic converter could
P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)
P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)The PCM may disable the misfiring cylinder or cylinders in order to prevent further damage to the engine. Code P0316 is often listed in addition to one or more of the P0300 series codes that are associated with the misfiring cylinder/s.
P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)
P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)The Bank 1 portion of the code refers to the side of the engine with the number one cylinder. Sensor 1 refers to the upstream O2 sensor.
How to Tell If the Catalytic Converter is Clogged
How to Tell If the Catalytic Converter is CloggedA clogged catalytic converter will present symptoms, while a chemically failed cat con that’s not clogged typically just illuminates the check engine light or malfunction indicator lamp (MIL). Also, if the cat con that just fails chemically but doesn’t clog is not the light-off cat con (the cat con closest