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2001 GMC Sierra 2500 HD
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2001 GMC Sierra 2500 HD

2001 GMC Sierra 2500 HD Catalytic Converters

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Passenger Side OEM Grade Series Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Magnaflow®
Passenger Side OEM Grade Series 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: M6621989
Guaranteed to Fit
$336.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 8.1L 153.0 in. Wheelbase
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 8.1L 153.0 in. Wheelbase
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 8.1L 153.0 in. Wheelbase
Product Details
Location : Passenger SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : (1) Converter Quantity; 3 in. Main Piping Diameter; 8.75 in. Body Length x 5 in. Body Width x 5 in. Body Height; 3 in. ID x 3 in. OD; Round Body Shape; Spun Body Type; Bolt-On Inlet Attachment; Clamp-On Outlet Attachment; Stainless Steel Material; Post Converter; Includes Gasket; 23.25 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 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
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)
Magnaflow®
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: M6699009HM
Guaranteed to Fit
$222.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 8.1L 153.0 in. Wheelbase
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.0L
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 8.1L 153.0 in. Wheelbase
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 6.0L
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.0L
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 8.1L 153.0 in. Wheelbase
Product Details
Location : Driver or Passenger SideEmissions : 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/Outlet; 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 : Magnaflow 5 year / 50,000 Mile 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.

Series : HM Grade SeriesTube 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)
Magnaflow®
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: M6699209HM
Guaranteed to Fit
$178.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 8.1L 153.0 in. Wheelbase, Cutting And Welding Required
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.0L Cutting And Welding Required
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 6.0L Cutting And Welding Required
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.0L Cutting And Welding Required
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 8.1L 153.0 in. Wheelbase, Cutting And Welding Required
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 8.1L 153.0 in. Wheelbase, Cutting And Welding Required
Product Details
Location : Front or Rear, Driver SideEmissions : 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/Outlet; 13 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 : Magnaflow 25,000 Mile 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.

Series : HM Grade SeriesTube 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)
Magnaflow®
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: M6651209
Guaranteed to Fit
$194.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 8.1L 153.0 in. Wheelbase, Cutting And Welding Required
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 8.1L 153.0 in. Wheelbase, Cutting And Welding Required
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 8.1L 153.0 in. Wheelbase, Cutting And Welding Required
Product Details
Location : Front or Rear, Driver SideEmissions : 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/Outlet; 13 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 : Magnaflow 25,000 Mile 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.

Series : OEM Grade SeriesTube Material : Stainless Steel
HM Grade Series Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Magnaflow®
HM Grade Series 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: M6699206HM
Guaranteed to Fit
$178.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 6.0L Cutting and Welding Required During Installation
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.0L Cutting and Welding Required During Installation
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.0L Cutting and Welding Required During Installation
Product Details
Location : Front or Rear, Driver SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 2.25 in. Inlet/2.5 in. 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 : HM Grade SeriesTube 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)
Magnaflow®
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: M6651009
Guaranteed to Fit
$231.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 8.1L 153.0 in. Wheelbase
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.0L
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 8.1L 153.0 in. Wheelbase
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 6.0L
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.0L
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 8.1L 153.0 in. Wheelbase
Product Details
Location : Driver or Passenger SideEmissions : 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/Outlet; 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 : Magnaflow 5 year / 50,000 Mile 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.

Series : OEM Grade SeriesTube Material : Stainless Steel
OEM Grade Series Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Magnaflow®
OEM Grade Series 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
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.0L California Emissions Equipped Vehicles Registered Outside Of California; Low Emissions Vehicles (LEV)
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 6.0L California Emissions Equipped Vehicles Registered Outside Of California; Low Emissions Vehicles (LEV)
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.0L California Emissions Equipped Vehicles Registered Outside Of California; Low Emissions Vehicles (LEV)
Product Details
Location : Front, Passenger SideEmissions : 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
Front, Passenger Side OEM Grade Series Catalytic Converter, 8, 6.0 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Magnaflow®
Front, Passenger Side OEM Grade Series Catalytic Converter, 8, 6.0 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6652493
Guaranteed to Fit
$447.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.0L Low Emission Vehicle (Lev)
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 6.0L Low Emission Vehicle (Lev)
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.0L Low Emission Vehicle (Lev)
Product Details
Location : Front, Passenger SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : (1) Converter Quantity; 3 in. Main Piping Diameter; 9 in. Body Length x 4 in. Body Width x 4 in. Body Height; 3 in. ID x 3 in. OD; Round Body Shape; Spun Body Type; Bolt-On Inlet and Outlet Attachment; Stainless Steel Material; Pre Converter; Includes Clamp, Hangers and Gasket; 49.38 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 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
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)
Magnaflow®
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: M6660121
Guaranteed to Fit
$506.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.6L
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 6.6L
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.6L
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 : Round body; 12 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 : Magnaflow 5 year / 50,000 Mile 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.

Series : OEM Grade SeriesTube 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)
Magnaflow®
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: M6660120
Guaranteed to Fit
$506.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.6L DIESEL, With Duramax Engine
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 6.6L DIESEL, With Duramax Engine
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.6L DIESEL, With Duramax Engine
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 : 3.5 in. Inlet/Outlet; 12 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 : Magnaflow 25,000 Mile 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.

Series : HM Grade SeriesTube Material : Stainless Steel
Passenger Side HM Grade Series Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Magnaflow®
Passenger Side HM Grade Series 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: M6693479
Guaranteed to Fit
$517.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.0L 133.0 in. Wheelbase, With 3 in. Diameter Outlet
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.0L 133.0 in. Wheelbase, With 3 in. Diameter Outlet
Product Details
Location : Passenger SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : Gaskets Included; 49 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 : 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 : HM Grade SeriesTube Material : Stainless Steel
Passenger Side OEM Grade Series Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Magnaflow®
Passenger Side OEM Grade Series 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: M6649642
Guaranteed to Fit
$543.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.0L 133.0 in. Wheelbase, With 3 in. Diameter Outlet
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.0L 133.0 in. Wheelbase, With 3 in. Diameter Outlet
Product Details
Location : Passenger SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : Gaskets Included; 79 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 : 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
Driver Side HM Grade Series Catalytic Converter, 8, 6.0 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Magnaflow®
Driver Side HM Grade Series Catalytic Converter, 8, 6.0 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6693622
Guaranteed to Fit
$546.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.0L Replaces Front Pre-Converter And Rear Main Converter
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 6.0L Replaces Front Pre-Converter And Rear Main Converter
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.0L Replaces Front Pre-Converter And Rear Main Converter
Product Details
Location : Driver SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : Gaskets Included; 50.5 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 : 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 : HM Grade SeriesTube Material : Stainless Steel
Passenger Side HM Grade Series Catalytic Converter, 8, 6.0 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Magnaflow®
Passenger Side HM Grade Series Catalytic Converter, 8, 6.0 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6693623
Guaranteed to Fit
$623.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.0L Replaces Front Pre-Converter And Rear Main Converter
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 6.0L Replaces Front Pre-Converter And Rear Main Converter
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.0L Replaces Front Pre-Converter And Rear Main Converter
Product Details
Location : Passenger SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : Gaskets Included; 81 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 : 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 : HM Grade SeriesTube Material : Stainless Steel
HM Grade Series Catalytic Converter, 8, 6.6 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Magnaflow®
HM Grade Series Catalytic Converter, 8, 6.6 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6660501
Guaranteed to Fit
$771.00
Vehicle Fitment
  • 2001 GMC Sierra 2500 HD SLE 8 Cyl 6.6L
  • 2001 GMC Sierra 2500 HD SLT 8 Cyl 6.6L
  • 2001 GMC Sierra 2500 HD SL 8 Cyl 6.6L
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 : 45.75 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 : 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 : HM Grade SeriesTube Material : Stainless Steel
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Can You Drive Without a Catalytic Converter?
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P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)
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How to Tell If the Catalytic Converter is Clogged
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