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1991 GMC K2500
1991 GMC K2500 Catalytic Converters
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Part Number: DAV14476
Guaranteed to Fit
$195.49
Vehicle Fitment
- 1991 GMC K2500 Sierra 8 Cyl 5.7L Up To 7200 Gvw
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.7L Up To 7200 Gvw
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.7L Up To 7200 Gvw
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 : Without air tube port provision; 26.25 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 : 25,000-mile Davico limited warranty on catalyst emission properties and 5-year or 50,000-mile limited warranty on tube, shell and weldsProp 65 Warning :
WARNING: 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.
Part Number: DAV14776
Guaranteed to Fit
$205.49
Vehicle Fitment
- 1991 GMC K2500 Sierra SLE 8 Cyl 7.4L
- 1991 GMC K2500 Sierra 8 Cyl 5.7L
- 1991 GMC K2500 Sierra SLX 8 Cyl 7.4L
- 1991 GMC K2500 Sierra 8 Cyl 7.4L
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.7L
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.7L
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 : 26.25 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 : 25,000-mile Davico limited warranty on catalyst emission properties and 5-year or 50,000-mile limited warranty on tube, shell and weldsProp 65 Warning :
WARNING: 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.
Part Number: DAV14575
Guaranteed to Fit
$166.49
Vehicle Fitment
- 1991 GMC K2500 Sierra 6 Cyl 4.3L Up To 8500 Gvw
- 1991 GMC K2500 Sierra SLE 6 Cyl 4.3L Up To 8500 Gvw
- 1991 GMC K2500 Sierra SLX 6 Cyl 4.3L Up To 8500 Gvw
Product Details
Location : CenterEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : Without air tube port provision; 26.5 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 : 25,000-mile Davico limited warranty on catalyst emission properties and 5-year or 50,000-mile limited warranty on tube, shell and weldsProp 65 Warning :
WARNING: 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.
Part Number: M6694009
Guaranteed to Fit
$119.00
Vehicle Fitment
- 1991 GMC K2500 Sierra 8 Cyl 5.7L Under 15000 Lb. Gvw; Cutting And Welding Required
- 1991 GMC K2500 Sierra 8 Cyl 7.4L Under 15000 Lb. Gvw; Cutting And Welding Required
- 1991 GMC K2500 Sierra 6 Cyl 4.3L Over 8500 Lb. Gross Vehicle Weight (Gvw); Cutting And Welding Required
- 1991 GMC K2500 Sierra SLX 6 Cyl 4.3L Over 8500 Lb. Gross Vehicle Weight (Gvw); Cutting And Welding Required
- 1991 GMC K2500 Sierra SLE 6 Cyl 4.3L Over 8500 Lb. Gross Vehicle Weight (Gvw); Cutting And Welding Required
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.7L Under 15000 Lb. Gvw; Cutting And Welding Required
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.7L Under 15000 Lb. Gvw; Cutting And Welding Required
- 1991 GMC K2500 Sierra SLE 8 Cyl 7.4L Under 15000 Lb. Gvw; Cutting And Welding Required
- 1991 GMC K2500 Sierra SLX 8 Cyl 7.4L Under 15000 Lb. Gvw; Cutting And Welding Required
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/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 25,000 Mile Limited WarrantyReturns Policy : NON-RETURNABLEProp 65 Warning :
WARNING: 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.
Part Number: M6694006
Guaranteed to Fit
$119.00
Vehicle Fitment
- 1991 GMC K2500 Sierra 6 Cyl 4.3L Under 8500 Lb. Gvw; Cutting And Welding Required
- 1991 GMC K2500 Sierra SLE 6 Cyl 4.3L Under 8500 Lb. Gvw; Cutting And Welding Required
- 1991 GMC K2500 Sierra SLX 6 Cyl 4.3L Under 8500 Lb. Gvw; Cutting And Welding Required
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.0L Cutting And Welding Required
- 1991 GMC K2500 Sierra 8 Cyl 5.0L Cutting And Welding Required
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.0L Cutting And Welding Required
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/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 25,000 Mile Limited WarrantyReturns Policy : NON-RETURNABLEProp 65 Warning :
WARNING: 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.
Part Number: M66339109
Guaranteed to Fit
$480.00
Vehicle Fitment
- 1991 GMC K2500 Sierra 8 Cyl 5.7L EO# D-193-105; Cutting And Welding Required
- 1991 GMC K2500 Sierra 8 Cyl 7.4L EO# D-193-105; Cutting And Welding Required
- 1991 GMC K2500 Sierra 6 Cyl 4.3L EO# D-193-105; Over 8500 Lb. Gross Vehicle Weight (Gvw); Cutting And Welding Required
- 1991 GMC K2500 Sierra SLX 6 Cyl 4.3L EO# D-193-105; Over 8500 Lb. Gross Vehicle Weight (Gvw); Cutting And Welding Required
- 1991 GMC K2500 Sierra SLE 6 Cyl 4.3L EO# D-193-105; Over 8500 Lb. Gross Vehicle Weight (Gvw); Cutting And Welding Required
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.7L EO# D-193-105; Cutting And Welding Required
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.7L EO# D-193-105; Cutting And Welding Required
- 1991 GMC K2500 Sierra SLE 8 Cyl 7.4L EO# D-193-105; Cutting And Welding Required
- 1991 GMC K2500 Sierra SLX 8 Cyl 7.4L EO# D-193-105; Cutting And Welding Required
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalNotes : 16 in. overall lengthType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-105Gasket Included : Without GasketWarranty : 5-year or 50,000-mile Magnaflow limited warrantyReturns Policy : NON-RETURNABLEProp 65 Warning :
WARNING: 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.
Part Number: M6693476
Guaranteed to Fit
$272.00
Vehicle Fitment
- 1991 GMC K2500 Sierra 8 Cyl 5.7L To 15000 Lb. Gvw
- 1991 GMC K2500 Sierra 8 Cyl 7.4L To 15000 Lb. Gvw
- 1991 GMC K2500 Sierra 6 Cyl 4.3L Over 8500 Lb. Gross Vehicle Weight (Gvw)
- 1991 GMC K2500 Sierra SLX 6 Cyl 4.3L Over 8500 Lb. Gross Vehicle Weight (Gvw)
- 1991 GMC K2500 Sierra SLE 6 Cyl 4.3L Over 8500 Lb. Gross Vehicle Weight (Gvw)
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.7L To 15000 Lb. Gvw
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.7L To 15000 Lb. Gvw
- 1991 GMC K2500 Sierra SLE 8 Cyl 7.4L To 15000 Lb. Gvw
- 1991 GMC K2500 Sierra SLX 8 Cyl 7.4L To 15000 Lb. Gvw
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 : 26 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: 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.
Part Number: M6693475
Guaranteed to Fit
$330.00
Vehicle Fitment
- 1991 GMC K2500 Sierra 6 Cyl 4.3L To 8500 Lb. Gvw
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.0L
- 1991 GMC K2500 Sierra SLE 6 Cyl 4.3L To 8500 Lb. Gvw
- 1991 GMC K2500 Sierra 8 Cyl 5.0L
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.0L
- 1991 GMC K2500 Sierra SLX 6 Cyl 4.3L To 8500 Lb. Gvw
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 : 26.25 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: 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.
Part Number: M663391476
Guaranteed to Fit
$914.00
Vehicle Fitment
- 1991 GMC K2500 Sierra 8 Cyl 5.7L EO# D-193-132; To 8500 Lb. Gvw
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.7L EO# D-193-132; To 8500 Lb. Gvw
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.7L EO# D-193-132; To 8500 Lb. Gvw
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalNotes : (1) Converter Quantity; 3 in. Main Piping Diameter; Clamp-On Inlet and Outlet Attachment; Stainless Steel Material; Ceramic Substrate Material; 26.25 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-132Gasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Magnaflow limited warrantyProp 65 Warning :
WARNING: 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.
Part Number: M663391473
Guaranteed to Fit
$914.00
Vehicle Fitment
- 1991 GMC K2500 Sierra SLE 8 Cyl 7.4L EO# D-193-132; To 8500 Lb. Gvw
- 1991 GMC K2500 Sierra SLX 8 Cyl 7.4L EO# D-193-132; To 8500 Lb. Gvw
- 1991 GMC K2500 Sierra 8 Cyl 7.4L EO# D-193-132; To 8500 Lb. Gvw
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-132Gasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Magnaflow limited warrantyProp 65 Warning :
WARNING: 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.
Part Number: M663391006
Guaranteed to Fit
$1,128.00
Vehicle Fitment
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.0L
- 1991 GMC K2500 Sierra 8 Cyl 5.0L
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.0L
- 1991 GMC K2500 Sierra 6 Cyl 4.3L Up To 8, 500Lbs Gvw
- 1991 GMC K2500 Sierra SLE 6 Cyl 4.3L Up To 8, 500Lbs Gvw
- 1991 GMC K2500 Sierra SLX 6 Cyl 4.3L Up To 8, 500Lbs Gvw
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalProduct Fit : Direct FitRecommended Use : Performance ReplacementQuantity Sold : Sold individuallyEO Number : D-193-132Gasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Magnaflow limited warrantyProp 65 Warning :
WARNING: 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.
Part Number: M66339106
Guaranteed to Fit
$480.00
Vehicle Fitment
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.0L EO# D-193-105; Cutting And Welding Required
- 1991 GMC K2500 Sierra 8 Cyl 5.0L EO# D-193-105; Cutting And Welding Required
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.0L EO# D-193-105; Cutting And Welding Required
- 1991 GMC K2500 Sierra 6 Cyl 4.3L EO# D-193-105; To 8500 Lb. Gvw; Cutting And Welding Required
- 1991 GMC K2500 Sierra SLE 6 Cyl 4.3L EO# D-193-105; To 8500 Lb. Gvw; Cutting And Welding Required
- 1991 GMC K2500 Sierra SLX 6 Cyl 4.3L EO# D-193-105; To 8500 Lb. Gvw; Cutting And Welding Required
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalNotes : 16 in. overall lengthType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-105Gasket Included : Without GasketWarranty : 5-year or 50,000-mile Magnaflow limited warrantyReturns Policy : NON-RETURNABLEProp 65 Warning :
WARNING: 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.
Part Number: WK80906
Guaranteed to Fit
$561.99
Vehicle Fitment
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.0L
- 1991 GMC K2500 Sierra 8 Cyl 5.0L
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.0L
- 1991 GMC K2500 Sierra 6 Cyl 4.3L
- 1991 GMC K2500 Sierra SLE 6 Cyl 4.3L
- 1991 GMC K2500 Sierra SLX 6 Cyl 4.3L
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalNotes : 18 in. overall lengthType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-182-55Gasket Included : Without GasketWarranty : 5-year or 50,000-mile Walker limited warrantyReturns Policy : NON-RETURNABLEProp 65 Warning :
WARNING: 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.
Part Number: EAST70857
Guaranteed to Fit
$239.49
Vehicle Fitment
- 1991 GMC K2500 Sierra 8 Cyl 5.7L 4WD, Undercar, Over 8500 GVW
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.7L 4WD, Undercar, Over 8500 GVW
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.7L 4WD, Undercar, Over 8500 GVW
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 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: 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.
Part Number: APE645341
Guaranteed to Fit
$195.49
Vehicle Fitment
- 1991 GMC K2500 Sierra 6 Cyl 4.3L 141.5 in. wheelbase; To 8600 lbs. GVW; With Closed Coupled Exhaust will have Catalytic Converter welded into front exhaust pipe.; Except Closed Coupled Exhaust
- 1991 GMC K2500 Sierra SLE 8 Cyl 5.0L Eng. VIN: H; 155.5 in. Wheelbase
- 1991 GMC K2500 Sierra SLE 6 Cyl 4.3L 141.5 in. wheelbase; To 8600 lbs. GVW; With Closed Coupled Exhaust will have Catalytic Converter welded into front exhaust pipe.; Except Closed Coupled Exhaust
- 1991 GMC K2500 Sierra 8 Cyl 5.0L Eng. VIN: H; 155.5 in. Wheelbase
- 1991 GMC K2500 Sierra SLX 8 Cyl 5.0L Eng. VIN: H; 141.5 in. Wheelbase
- 1991 GMC K2500 Sierra SLX 6 Cyl 4.3L 141.5 in. wheelbase; To 8600 lbs. GVW; With Closed Coupled Exhaust will have Catalytic Converter welded into front exhaust pipe.; Except Closed Coupled Exhaust
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)Product Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyWarranty : 5-year or 50,000-mile AP Exhaust limited warranty on converter body and 25,000-mile limited warranty on emissionsProp 65 Warning :
WARNING: 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.
Page 1 of 4 | Showing 1 - 15 of 56 results
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A:BEST ANSWERHi Chris,
This is for the front, driver side applicable to several Chevrolet models.
To check the fitment please use our Vehicle Selector — which can be found towards the top of the homepage as well as all categories, search results, and product pages — can help verify if a part will fit your specific application.
To enter your application, simply select your vehicle’s year, make, model, sub-model, and engine type and click “Go.” Once your application is selected, you’ll see a “Guaranteed to Fit” badge if the part will fit, and we recommend that you also double-check Your Vehicle Fit Details as well as the Vehicle Fitment Information table on the product page. Show less
Aldrin P.
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Helpful Automotive Resources
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 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?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)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)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 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