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2003 Ford F-250 Super Duty
2003 Ford F-250 Super Duty Catalytic Converters
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Part Number: DAV19475
Guaranteed to Fit
$720.99
Vehicle Fitment
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 5.4L With Federal Emission; No O2 Port
- 2003 Ford F-250 Super Duty XL 10 Cyl 6.8L With Federal Emission; No O2 Port
- 2003 Ford F-250 Super Duty XLT 8 Cyl 5.4L With Federal Emission; No O2 Port
- 2003 Ford F-250 Super Duty Lariat 10 Cyl 6.8L With Federal Emission; No O2 Port
- 2003 Ford F-250 Super Duty XLT 10 Cyl 6.8L With Federal Emission; No O2 Port
- 2003 Ford F-250 Super Duty XL 8 Cyl 5.4L With Federal Emission; No O2 Port
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 : Without air tube port provision; 56.25 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: DAV19291
Guaranteed to Fit
$752.49
Vehicle Fitment
- 2003 Ford F-250 Super Duty XL 8 Cyl 6.0L DIESEL
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 6.0L DIESEL
- 2003 Ford F-250 Super Duty XLT 8 Cyl 6.0L DIESEL
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 : 28.5 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: DAV107322
Guaranteed to Fit
$1,997.49
Vehicle Fitment
- 2003 Ford F-250 Super Duty XL 8 Cyl 5.4L With Federal Emission; No O2 Port; Test Group Name: 3Fmxh05.4Th5,Std: LEV1 ULEV; Weight Class: Mdv3
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 5.4L With Federal Emission; No O2 Port; Test Group Name: 3Fmxh05.4Th5,Std: LEV1 ULEV; Weight Class: Mdv3
- 2003 Ford F-250 Super Duty Lariat 10 Cyl 6.8L With Federal Emission; No O2 Port; Test Group Name: 3Fmxh05.4Th5,Std: LEV1 ULEV; Weight Class: Mdv3
- 2003 Ford F-250 Super Duty XLT 10 Cyl 6.8L With Federal Emission; No O2 Port; Test Group Name: 3Fmxh05.4Th5,Std: LEV1 ULEV; Weight Class: Mdv3
- 2003 Ford F-250 Super Duty XLT 8 Cyl 5.4L With Federal Emission; No O2 Port; Test Group Name: 3Fmxh05.4Th5,Std: LEV1 ULEV; Weight Class: Mdv3
- 2003 Ford F-250 Super Duty XL 10 Cyl 6.8L With Federal Emission; No O2 Port; Test Group Name: 3Fmxh05.4Th5,Std: LEV1 ULEV; Weight Class: Mdv3
Product Details
Location : RearEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 10 in. W x 9 in. H; 56.25 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-709-1Gasket 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: M66445300
Guaranteed to Fit
$1,053.00
Vehicle Fitment
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 5.4L EO# D-193-100; Eng Fam No: 3Fmxa05.4Jfc; Cutting And Welding Required
- 2003 Ford F-250 Super Duty XL 10 Cyl 6.8L EO# D-193-100; Eng Fam No: 3Fmxa06.8Jfc; Cutting And Welding Required
- 2003 Ford F-250 Super Duty XLT 8 Cyl 5.4L EO# D-193-100; Eng Fam No: 3Fmxa05.4Jfc; Cutting And Welding Required
- 2003 Ford F-250 Super Duty Lariat 10 Cyl 6.8L EO# D-193-100; Eng Fam No: 3Fmxa06.8Jfc; Cutting And Welding Required
- 2003 Ford F-250 Super Duty XLT 10 Cyl 6.8L EO# D-193-100; Eng Fam No: 3Fmxa06.8Jfc; Cutting And Welding Required
- 2003 Ford F-250 Super Duty XL 8 Cyl 5.4L EO# D-193-100; Eng Fam No: 3Fmxa05.4Jfc; Cutting And Welding Required
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalNotes : 28.5 in. overall lengthType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-100Gasket 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: M6699559HM
Guaranteed to Fit
$318.00
Vehicle Fitment
- 2003 Ford F-250 Super Duty XL 8 Cyl 7.3L Cutting And Welding Required; Not Permitted For Use in The State Of Colorado
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 7.3L Cutting And Welding Required; Not Permitted For Use in The State Of Colorado
- 2003 Ford F-250 Super Duty XLT 8 Cyl 7.3L Cutting And Welding Required; Not Permitted For Use in The State Of Colorado
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: M6651509
Guaranteed to Fit
$426.00
Vehicle Fitment
- 2003 Ford F-250 Super Duty XL 10 Cyl 6.8L To 15000 Gvw
- 2003 Ford F-250 Super Duty Lariat 10 Cyl 6.8L To 15000 Gvw
- 2003 Ford F-250 Super Duty XLT 10 Cyl 6.8L To 15000 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/Outlet; 19.5 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: M6655400
Guaranteed to Fit
$594.00
Vehicle Fitment
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 5.4L Cutting And Welding Required
- 2003 Ford F-250 Super Duty XL 10 Cyl 6.8L Cutting And Welding Required
- 2003 Ford F-250 Super Duty XLT 8 Cyl 5.4L Cutting And Welding Required
- 2003 Ford F-250 Super Duty XL 8 Cyl 5.4L Cutting And Welding Required
- 2003 Ford F-250 Super Duty Lariat 10 Cyl 6.8L Cutting And Welding Required
- 2003 Ford F-250 Super Duty XLT 10 Cyl 6.8L 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 : With Oxygen Sensor Port; 28.5 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 : 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: M6655323
Guaranteed to Fit
$638.00
Vehicle Fitment
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 5.4L
- 2003 Ford F-250 Super Duty XL 10 Cyl 6.8L
- 2003 Ford F-250 Super Duty XLT 8 Cyl 5.4L
- 2003 Ford F-250 Super Duty Lariat 10 Cyl 6.8L
- 2003 Ford F-250 Super Duty XLT 10 Cyl 6.8L
- 2003 Ford F-250 Super Duty XL 8 Cyl 5.4L
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 : Gaskets Included; 57 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: 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: M6655324
Guaranteed to Fit
$666.00
Vehicle Fitment
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 5.4L
- 2003 Ford F-250 Super Duty XL 10 Cyl 6.8L
- 2003 Ford F-250 Super Duty XLT 8 Cyl 5.4L
- 2003 Ford F-250 Super Duty Lariat 10 Cyl 6.8L
- 2003 Ford F-250 Super Duty XLT 10 Cyl 6.8L
- 2003 Ford F-250 Super Duty XL 8 Cyl 5.4L
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 : Gaskets Included; 57 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: 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: M6660512
Guaranteed to Fit
$675.00
Vehicle Fitment
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 7.3L
- 2003 Ford F-250 Super Duty XLT 8 Cyl 7.3L
- 2003 Ford F-250 Super Duty XL 8 Cyl 7.3L
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 : 34.5 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 : 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: M664451300
Guaranteed to Fit
$1,643.00
Vehicle Fitment
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 5.4L Eng. Family # 3FMXA05.4JFC, Cert. Level : LEV1 LEV, OE Spec, Cutting and welding required during installation, 3in. Universal OBDII Catalytic Converter
- 2003 Ford F-250 Super Duty XL 10 Cyl 6.8L Eng. Family # 3FMXA06.8JFC, Cert. Level : LEV1 LEV, OE Spec, Cutting and welding required during installation, 3in. Universal OBDII Catalytic Converter
- 2003 Ford F-250 Super Duty XLT 8 Cyl 5.4L Eng. Family # 3FMXA05.4JFC, Cert. Level : LEV1 LEV, OE Spec, Cutting and welding required during installation, 3in. Universal OBDII Catalytic Converter
- 2003 Ford F-250 Super Duty Lariat 10 Cyl 6.8L Eng. Family # 3FMXA06.8JFC, Cert. Level : LEV1 LEV, OE Spec, Cutting and welding required during installation, 3in. Universal OBDII Catalytic Converter
- 2003 Ford F-250 Super Duty XLT 10 Cyl 6.8L Eng. Family # 3FMXA06.8JFC, Cert. Level : LEV1 LEV, OE Spec, Cutting and welding required during installation, 3in. Universal OBDII Catalytic Converter
- 2003 Ford F-250 Super Duty XL 8 Cyl 5.4L Eng. Family # 3FMXA05.4JFC, Cert. Level : LEV1 LEV, OE Spec, Cutting and welding required during installation, 3in. Universal OBDII Catalytic Converter
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalProduct Fit : Direct FitRecommended Use : Performance ReplacementQuantity Sold : Sold individuallyEO Number : D-193-136Gasket 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: APE912924
Guaranteed to Fit
$1,148.49
Vehicle Fitment
- 2003 Ford F-250 Super Duty XLT 10 Cyl 6.8L 3FMXA06.8JFC; Aftermarket Style
- 2003 Ford F-250 Super Duty Lariat 10 Cyl 6.8L 3FMXA06.8JFC; Aftermarket Style
- 2003 Ford F-250 Super Duty XL 10 Cyl 6.8L 3FMXA06.8JFC; Aftermarket Style
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalNotes : 56.5 in. Overall Length; 3 Bolt Welded Flange Inlet Type A; 3 in. OD Pipe Outlet Type A; Ceramic Substrate MaterialType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-280-101Gasket Included : Without GasketOxygen Sensor Ports : NoOxygen 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: 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: EAST30807
Guaranteed to Fit
$525.99
Vehicle Fitment
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 5.4L Undercar, California Emissions
- 2003 Ford F-250 Super Duty Lariat 10 Cyl 6.8L Undercar, California Emissions
- 2003 Ford F-250 Super Duty XL 10 Cyl 6.8L Undercar, California Emissions
- 2003 Ford F-250 Super Duty XLT 10 Cyl 6.8L Undercar, California Emissions
- 2003 Ford F-250 Super Duty XL 8 Cyl 5.4L Undercar, California Emissions
- 2003 Ford F-250 Super Duty XLT 8 Cyl 5.4L Undercar, 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 : 56 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: 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: CAT912605
Guaranteed to Fit
$949.49
Vehicle Fitment
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 5.4L RWD; 3FMXA05.4JFC; EO Number : D-798-7
- 2003 Ford F-250 Super Duty Lariat 10 Cyl 6.8L RWD; 3FMXA06.8JFC; EO Number : D-798-7
- 2003 Ford F-250 Super Duty XL 10 Cyl 6.8L RWD; 3FMXA06.8JFC; EO Number : D-798-7
- 2003 Ford F-250 Super Duty XLT 10 Cyl 6.8L RWD; 3FMXA06.8JFC; EO Number : D-798-7
- 2003 Ford F-250 Super Duty XL 8 Cyl 5.4L RWD; 3FMXA05.4JFC; EO Number : D-798-7
- 2003 Ford F-250 Super Duty XLT 8 Cyl 5.4L RWD; 3FMXA05.4JFC; EO Number : D-798-7
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-798-7Gasket 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: 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: EAST30806
Guaranteed to Fit
$535.99
Vehicle Fitment
- 2003 Ford F-250 Super Duty Lariat 8 Cyl 5.4L Federal Emissions, Undercar
- 2003 Ford F-250 Super Duty Lariat 10 Cyl 6.8L Federal Emissions, Undercar
- 2003 Ford F-250 Super Duty XL 10 Cyl 6.8L Federal Emissions, Undercar
- 2003 Ford F-250 Super Duty XLT 10 Cyl 6.8L Federal Emissions, Undercar
- 2003 Ford F-250 Super Duty XL 8 Cyl 5.4L Federal Emissions, Undercar
- 2003 Ford F-250 Super Duty XLT 8 Cyl 5.4L Federal Emissions, 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 : 56 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: 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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DavicoRear Exact Fit 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)Manufacturer #19475
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FEDERAL EPA STANDARD, 46-STATE LEGAL (CANNOT SHIP TO OR BE USED IN VEHICLES ORIGINALLY PURCHASED IN CA, CO, NY OR ME) DIRECT FIT DAVICO CATALYTIC CONVERTER
Carefully crafted to be easily installed without a need for cutting, sliding, clamping or welding, Davico&rsquo...Product Questions & Answers
Q:Looking for part number 339301. MagnafloD-193-105 2000 f-250 V10 6.8 xl? Show Less
Blue10860
A:BEST ANSWERHi Jarado, I'm glad to assist you. The part number you provided is not compatible with your truck application. The correct and matching part number is 445300. It is a 50-state legal and CARB-compliant catalytic converter. Grab our promo price, which has a 30-day post-purchase price match guarantee. Happy shopping!
https://www.carparts.com/details/Ford/F-250_Super_Duty/Magnaflow/Catalytic_Converter/2000/XLT/10_Cyl_6-dot-8L/M66445300.html?can=cpje1043_CSQA_20230605 Show less
Jeonino E.
4 Questions, 1 AnswerView all Q&As >
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