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2003 Cadillac Escalade EXT
2003 Cadillac Escalade EXT Catalytic Converters
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Part Number: M66445006
Guaranteed to Fit
$554.00
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L EO# D-193-100; Eng Fam No: 3Gmxt06.0187; Cutting And Welding Required
Product Details
Location : Driver or Passenger SideEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 2.25 in. Inlet/Outlet; 16 in. overall lengthType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-100Gasket Included : Without GasketWarranty : Magnaflow 5 year / 50,000 Mile 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: M6699206HM
Guaranteed to Fit
$178.00
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L Cutting and Welding Required During Installation
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 : 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: 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: M6693601
Guaranteed to Fit
$525.00
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L
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 : 2.5 in. Main Piping Diameter; (1) Converter Quantity; Pre and Post Converter Oxygen Sensor Location; Ceramic Substrate Material; 49.75 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 construction warranty and 25,000-mile Magnaflow limited emission 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: M6651878
Guaranteed to Fit
$543.00
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L
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; 49.75 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: M6693602
Guaranteed to Fit
$570.00
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L
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; 37.25 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 : 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: M6649649
Guaranteed to Fit
$598.00
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L
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; 37.75 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: M664451421
Guaranteed to Fit
$874.00
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L EO# D-193-136; Eng Fam No: 3Gmxt06.0187
Product Details
Location : Passenger SideEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : Stainless Steel MaterialType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-136Gasket Included : With 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: M664451418
Guaranteed to Fit
$1,231.00
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L EO# D-193-136; Eng Fam No: 3Gmxt06.0187
Product Details
Location : Driver SideEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : (1) Converter Quantity; 2.5 in. Main Piping Diameter; 11 in. Body Length x 5 in. Body Width x 5 in. Body Height; 2.5 in. ID x 2.5 in. OD; Round Body Shape; Spun Body Type; Bolt-On Inlet Attachment; Clamp-On Outlet Attachment; Stainless Steel Material; Pre and Post Converter; Includes Clamp, Hangers and Gasket; 48 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-136Gasket Included : With 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: WK54423
Guaranteed to Fit
$448.99
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L Additional Parts Needed: 31610
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 : 38.5 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 Walker 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: WK16166
Guaranteed to Fit
$403.49
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L
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 : 45.13 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 Walker 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: APE645448
Guaranteed to Fit
$456.49
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L Direct Fit
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 : 40.5 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 : 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: CAT2506R
Guaranteed to Fit
$177.49
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L
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)Product Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyWarranty : 5-year or 50,000-mile Catco 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: APE608736
Guaranteed to Fit
$254.99
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L
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)Product Fit : Direct FitRecommended Use : OE ReplacementWarranty : 5-year or 50,000-mile AP Exhaust limited warranty on converter body and 50,000-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: CAT2736R
Guaranteed to Fit
$468.99
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L Federal and California Emissions
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 : 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 Catco limited warranty on converter body with 25,000-mile limited warranty on emissionsReturns 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: WK83497
Guaranteed to Fit
$660.49
Vehicle Fitment
- 2003 Cadillac Escalade EXT Base 8 Cyl 6.0L Efn # 3Gmxt06.0187; Legal For Use In The States Of California And New York.
Product Details
Location : Driver SideEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 37.75 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-182-69Gasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Walker 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.
Page 1 of 3 | Showing 1 - 15 of 43 results
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Expertly crafted and tested to top-grade, OE-specific standards, Flowmaster Catalytic Converter provides high quality performance without the high level price. Its OE-standard design provides the right fit and the right solut...
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Optimize your vehicle’s emissions control with the premium steel design and reliable performance of Walk...Product Questions & Answers
Q:What size pipe fits?
Gary O.
A:BEST ANSWERHi Gary, thank you for reaching out! This has 2.5" inlet and outlet pipes so preferably, a 2.5" pipe as well. You can also use bigger or smaller pipes and just have to weld them properly. Click the link below to order the converter while stocks last. Have a good one!
https://www.carparts.com/catalytic-converter/catco/cat2736r?can=cpab2020_csqa_20230913 Show less
Andrew B.
1 Question, 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