{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": false,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": false,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": false,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": false,
    "zipPaymentFlag": "u",
    "hassleFreeReturn": false,
    "lifetimeReplacement": false,
    "cpn_off": false
}
2008 GMC Savana 1500

2008 GMC Savana 1500 Catalytic Converters

Refine by:

Shop Catalog

Showing 1 - 15 of 45 results
Display item:
15
30
45
Sort by:
Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally Purchased In CA, CO, NY or ME), 64 In. Overall Length, Undercar
Part Number: REPC960306
Guaranteed to Fit
$336.99
Vehicle Fitment
  • 2008 GMC Savana 1500 LT 8 Cyl 5.3L Undercar
  • 2008 GMC Savana 1500 Base 8 Cyl 5.3L Undercar
  • 2008 GMC Savana 1500 LS 8 Cyl 5.3L Undercar
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L 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 : 64 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/63005NNGasket Included : Without 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 : 50379Series : 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
  • 2008 GMC Savana 1500 Base 8 Cyl 5.3L Cutting And Welding Required
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L Cutting And Welding Required
  • 2008 GMC Savana 1500 LT 8 Cyl 5.3L Cutting And Welding Required
  • 2008 GMC Savana 1500 LS 8 Cyl 5.3L Cutting And Welding Required
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 : 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
Driver Side, 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: DAV193161
Guaranteed to Fit
$236.99
Vehicle Fitment
  • 2008 GMC Savana 1500 LT 8 Cyl 5.3L
  • 2008 GMC Savana 1500 Base 8 Cyl 5.3L
  • 2008 GMC Savana 1500 LS 8 Cyl 5.3L
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L
Product Details
Location : Driver Side, CenterEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : Illegal for installation in NY on vehicles equipped with California emission systems; 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 : 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
Passenger Side, 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: DAV193162
Guaranteed to Fit
$226.99
Vehicle Fitment
  • 2008 GMC Savana 1500 LT 8 Cyl 5.3L
  • 2008 GMC Savana 1500 Base 8 Cyl 5.3L
  • 2008 GMC Savana 1500 LS 8 Cyl 5.3L
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L
Product Details
Location : Passenger Side, CenterEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : Illegal for installation in NY on vehicles equipped with California emission systems; 59.5 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 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
Driver Side Exact Fit Series Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: DAV282305
Guaranteed to Fit
$1,188.49
Vehicle Fitment
  • 2008 GMC Savana 1500 LS 8 Cyl 5.3L Efn: 8Gmxt05.3373; Emission Std: LEV2 LEV; Vehicle Class: Ldt2; Efn: 8Gmxt05.3384
  • 2008 GMC Savana 1500 LT 8 Cyl 5.3L Efn: 8Gmxt05.3373; Emission Std: LEV2 LEV; Vehicle Class: Ldt2; Efn: 8Gmxt05.3384
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L Efn: 8Gmxt04.3186; Emission Std: LEV2 LEV; Vehicle Class: Ldt2
  • 2008 GMC Savana 1500 Base 8 Cyl 5.3L Efn: 8Gmxt05.3373; Emission Std: LEV2 LEV; Vehicle Class: Ldt2; Efn: 8Gmxt05.3384
Product Details
Location : Driver SideEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 20 in. W x 15 in. H; 38 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-709-4Gasket 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
Passenger Side Exact Fit Series Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: DAV282306
Guaranteed to Fit
$1,220.49
Vehicle Fitment
  • 2008 GMC Savana 1500 LS 8 Cyl 5.3L Efn: 8Gmxt05.3373; Emission Std: LEV2 LEV; Vehicle Class: Ldt2; Efn: 8Gmxt05.3384
  • 2008 GMC Savana 1500 LT 8 Cyl 5.3L Efn: 8Gmxt05.3373; Emission Std: LEV2 LEV; Vehicle Class: Ldt2; Efn: 8Gmxt05.3384
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L Efn: 8Gmxt04.3186; Emission Std: LEV2 LEV; Vehicle Class: Ldt2
  • 2008 GMC Savana 1500 Base 8 Cyl 5.3L Efn: 8Gmxt05.3373; Emission Std: LEV2 LEV; Vehicle Class: Ldt2; Efn: 8Gmxt05.3384
Product Details
Location : Passenger SideEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 12 in. W x 9 in. H; 59.5 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-709-4Gasket 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: DAV19316
Guaranteed to Fit
$465.49
Vehicle Fitment
  • 2008 GMC Savana 1500 LT 8 Cyl 5.3L
  • 2008 GMC Savana 1500 Base 8 Cyl 5.3L
  • 2008 GMC Savana 1500 LS 8 Cyl 5.3L
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L Eng Vin: X
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 : 63.5 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 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 : 50379Series : Standard SeriesTube Material : Aluminized 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
  • 2008 GMC Savana 1500 Base 8 Cyl 5.3L Cutting and Welding Required During Installation
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L Cutting and Welding Required During Installation
  • 2008 GMC Savana 1500 LT 8 Cyl 5.3L Cutting and Welding Required During Installation
  • 2008 GMC Savana 1500 LS 8 Cyl 5.3L 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 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, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6624081
Guaranteed to Fit
$836.00
Vehicle Fitment
  • 2008 GMC Savana 1500 LT 8 Cyl 5.3L
  • 2008 GMC Savana 1500 Base 8 Cyl 5.3L
  • 2008 GMC Savana 1500 LS 8 Cyl 5.3L
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L
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 : Gaskets Included; 65.25 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 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 : 50379Series : HM 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)
Part Number: M6651092
Guaranteed to Fit
$878.00
Vehicle Fitment
  • 2008 GMC Savana 1500 LT 8 Cyl 5.3L
  • 2008 GMC Savana 1500 Base 8 Cyl 5.3L
  • 2008 GMC Savana 1500 LS 8 Cyl 5.3L
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L
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 : Gaskets Included; 65.25 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 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 : 50379Series : OEM Grade SeriesTube Material : Stainless Steel
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: EAST50379
Guaranteed to Fit
$625.49
Vehicle Fitment
  • 2008 GMC Savana 1500 LT 8 Cyl 5.3L Undercar
  • 2008 GMC Savana 1500 Base 8 Cyl 5.3L Undercar
  • 2008 GMC Savana 1500 LS 8 Cyl 5.3L Undercar
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L 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 : 64 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 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 : JC960306Tube Material : Aluminized Steel
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: APE608416
Guaranteed to Fit
$137.49
Vehicle Fitment
  • 2008 GMC Savana 1500 LS 8 Cyl 5.3L EPA Enhanced OBDII By Design Unit; Complete Assembly
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L EPA Enhanced OBDII By Design Unit; Complete Assembly
  • 2008 GMC Savana 1500 LT 8 Cyl 5.3L EPA Enhanced OBDII By Design Unit; Complete Assembly
  • 2008 GMC Savana 1500 Base 8 Cyl 5.3L EPA Enhanced OBDII By Design Unit; Complete Assembly
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 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 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.

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: CAT2565R
Guaranteed to Fit
$199.99
Vehicle Fitment
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L Federal & California Emissions, Not For Sale Or Use On Vehicles Licensed In The State Of Ca & Ny (Ny Vehicles With Ca 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)Product Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyWarranty : 5-year or 50,000-mile Catco 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.

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: APE608715
Guaranteed to Fit
$202.99
Vehicle Fitment
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L
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 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.

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: CAT2715R
Guaranteed to Fit
$381.49
Vehicle Fitment
  • 2008 GMC Savana 1500 Base 6 Cyl 4.3L 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 : 14 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 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
Page 1 of 3 | Showing 1 - 15 of 45 results

Top Rated Products

Took some shopping around and everywhere asking prices are through the roof. DeliverySee More
Shameeta M.
VERIFIED PURCHASER

Popular Products

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