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1998 Chevrolet Blazer

1998 Chevrolet Blazer Catalytic Converters

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Center Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally Purchased In CA, CO, NY or ME), 27.5 In. Overall Length
Part Number: REPG960302
Guaranteed to Fit
$162.99
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L
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 : 27.5 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/69009NNGasket Included : With GasketOxygen 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.

Interchange Part Number : 14520Series : Direct Replacement SeriesTube Material : Aluminized 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: M6651206
Guaranteed to Fit
$194.00
Vehicle Fitment
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L For Vehicles Originally Equipped With 1 Catalytic Converter; Cutting And Welding Required
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L For Vehicles Originally Equipped With 1 Catalytic Converter; Cutting And Welding Required
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L For Vehicles Originally Equipped With 1 Catalytic Converter; Cutting And Welding Required
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 : 13.75 in. L x 5 in. W x 4.75 in. HRestricted 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.

Promotions : Magnaflow Catalytic Converter SaleSeries : OEM Grade SeriesTube Material : Stainless Steel
Center Exact Fit Series Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: DAV99664
Guaranteed to Fit
$564.49
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L Efn: Wgmxt04.3184; Emission Std: Tier1; Vehicle Class: Ldt2
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L Efn: Wgmxt04.3184; Emission Std: Tier1; Vehicle Class: Ldt2
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L Efn: Wgmxt04.3184; Emission Std: Tier1; Vehicle Class: Ldt2
Product Details
Location : CenterEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 10.5 in. W x 7.25 in. H; 28 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-709-3Gasket 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 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 : Exact Fit SeriesTube Material : Aluminized Steel
Center 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)
Part Number: DAV44520
Guaranteed to Fit
$378.99
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L
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 : With air tube port provision; 28 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 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 : Exact Fit SeriesTube Material : Aluminized Steel
Front Exact Fit Series Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: DAV125372
Guaranteed to Fit
$619.49
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L Efn: Wgmxt04.3185; Emission Std: TLEV; Vehicle Class: Ldt2
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L Efn: Wgmxt04.3185; Emission Std: TLEV; Vehicle Class: Ldt2
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L Efn: Wgmxt04.3185; Emission Std: TLEV; Vehicle Class: Ldt2
Product Details
Location : FrontEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 28 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-709Gasket Included : Without 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 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 : Exact Fit SeriesTube Material : Aluminized Steel
Rear Exact Fit Series Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: DAV127373
Guaranteed to Fit
$646.49
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L Efn: Wgmxt04.3185; Emission Std: TLEV; Vehicle Class: Ldt2
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L Efn: Wgmxt04.3185; Emission Std: TLEV; Vehicle Class: Ldt2
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L Efn: Wgmxt04.3185; Emission Std: TLEV; Vehicle Class: Ldt2
Product Details
Location : RearEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 8 in. W x 6 in. H; 21 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-709Gasket 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 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 : Exact Fit SeriesTube Material : Aluminized Steel
Center Exact Fit Series Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: DAV103572
Guaranteed to Fit
$1,190.49
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L Tier1; Twc; Ldt2; Wgmxt04.3184
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L Tier1; Twc; Ldt2; Wgmxt04.3184
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L Tier1; Twc; Ldt2; Wgmxt04.3184
Product Details
Location : CenterEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 10.5 in. W x 7.25 in. H; 28 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 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 : Exact Fit SeriesTube Material : Aluminized Steel
Front 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)
Part Number: DAV14564
Guaranteed to Fit
$232.49
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L Eng Vin: W
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L Eng Vin: W
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L Eng Vin: W
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; 27 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 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 : Exact Fit SeriesTube Material : Aluminized Steel
Center Standard 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: DAV14520
Guaranteed to Fit
$256.99
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L
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 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 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 : REPG960302Series : Standard SeriesTube Material : Aluminized Steel
No Returns Accepted - Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal, Semi-Universal (Welding Required)
Part Number: M66445006
Guaranteed to Fit
$554.00
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L EO# D-193-100; Eng Fam No: Wgmxt04.3184; Cutting And Welding Required
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L EO# D-193-100; Eng Fam No: Wgmxt04.3184; Cutting And Welding Required
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L EO# D-193-100; Eng Fam No: Wgmxt04.3184; Cutting And Welding Required
Product Details
Emissions : 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 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 : California 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)
Part Number: M6699206HM
Guaranteed to Fit
$178.00
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L Cutting and Welding Required During Installation; Vehicles with 2 Converters
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L Cutting and Welding Required During Installation; Vehicles with 2 Converters
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L Cutting and Welding Required During Installation; Vehicles with 2 Converters
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 : 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, CARB and Federal EPA Standards, 50-state Legal, Semi-Universal (Welding Required)
Part Number: M66447106
Guaranteed to Fit
$523.00
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L TLEV, EFN# WGMXT04.3185
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L TLEV, EFN# WGMXT04.3185
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L TLEV, EFN# WGMXT04.3185
Product Details
Location : FrontEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 2.25 in. Inlet/Outlet; 13 in. overall lengthProduct Fit : Semi-Universal (Welding Required)Recommended Use : Performance ReplacementQuantity Sold : Sold individuallyEO Number : D-193-103, D-193-98Gasket Included : Without GasketWarranty : Magnaflow 5 year / 50,000 Mile 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 : 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)
Part Number: M6623455
Guaranteed to Fit
$574.00
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L For Vehicles Originally Equipped With 1 Catalytic Converter; For Vehicles Originally Equipped With 2 Catalytic Converter
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L For Vehicles Originally Equipped With 1 Catalytic Converter; For Vehicles Originally Equipped With 2 Catalytic Converter
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L For Vehicles Originally Equipped With 1 Catalytic Converter; For Vehicles Originally Equipped With 2 Catalytic Converter
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 : Gaskets Included; 27.75 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 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 : 14520Series : HM Grade SeriesTube Material : Stainless Steel
California Series Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: M664451455
Guaranteed to Fit
$1,027.00
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L EO# D-193-136; Eng Fam No: Wgmxt04.3184
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L EO# D-193-136; Eng Fam No: Wgmxt04.3184
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L EO# D-193-136; Eng Fam No: Wgmxt04.3184
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalNotes : (1) Converter Quantity; 2.5 in. Main Piping Diameter; Bolt-On Inlet and Outlet Attachment; Stainless Steel Material; Ceramic Substrate Material; Post Converter; Includes Hangers and Gasket; 27.25 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 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 : California SeriesTube Material : Stainless Steel
No Returns Accepted - Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal, Semi-Universal (Welding Required)
Part Number: WK83508
Guaranteed to Fit
$360.99
Vehicle Fitment
  • 1998 Chevrolet Blazer Base 6 Cyl 4.3L Efn # Wgmxt04.3185; Legal For Use In The States Of California And New York.
  • 1998 Chevrolet Blazer LS 6 Cyl 4.3L Efn # Wgmxt04.3185; Legal For Use In The States Of California And New York.
  • 1998 Chevrolet Blazer LT 6 Cyl 4.3L Efn # Wgmxt04.3185; Legal For Use In The States Of California And New York.
Product Details
Location : RearEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 13.25 in. overall lengthType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-182-69Gasket Included : Without GasketWarranty : 5-year or 50,000-mile Walker 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 : CalCat SeriesTube Material : Stainless Steel
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It fit, but the catalytic converter itself is only half the size of the OEM. I can liSee More
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Product Questions & Answers

Q:Manufacturer #83508 Walker catalytic converter for 1996 toyota tacoma 6 cylinder. Is this cat ombd2 compliant? Show Less
MORIAH S.
A:BEST ANSWERHi Moriah, thank you for reaching out. Yes, it is OBDII compliant. Click the link below to order the part while the stocks last. Have a good one! https://www.carparts.com/catalytic-converter/walker/wk83508?can=cpab2020_csqa_20230711 Show less
Andrew B.
 
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