2004 Mazda 3 Oxygen Sensors

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After Catalytic Converter Oxygen Sensor, B1S2; Non California-Esv, Sold individually, 4-wire, 4 Cyl 2.0L
DriveWire
After Catalytic Converter Oxygen Sensor, B1S2; Non California-Esv, Sold individually, 4-wire, 4 Cyl 2.0L
Part Number: RM96090018
Guaranteed to Fit
$23.49
Vehicle Fitment
  • 2004 Mazda 3 GT 4 Cyl 2.3L B1S2
  • 2004 Mazda 3 GS 4 Cyl 2.0L B1S2; Non California-Esv
  • 2004 Mazda 3 i 4 Cyl 2.0L B1S2; Non California-Esv
  • 2004 Mazda 3 S 4 Cyl 2.3L B1S2
  • 2004 Mazda 3 GX 4 Cyl 2.0L B1S2; Non California-Esv
Product Details
Location : After Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 31.5 in. Wire LengthInterchange Part Number : 25024661Warranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Returns Policy : 30-Day Return Policy
Before Catalytic Converter Oxygen Sensor, B1S1; California-Esv, Sold individually, 4-wire, 4 Cyl 2.0L
JC Whitney®
Before Catalytic Converter Oxygen Sensor, B1S1; California-Esv, Sold individually, 4-wire, 4 Cyl 2.0L
Part Number: JM960920
Guaranteed to Fit
$49.49
Vehicle Fitment
  • 2004 Mazda 3 GS 4 Cyl 2.0L B1S1; California-Esv
  • 2004 Mazda 3 i 4 Cyl 2.0L B1S1; California-Esv
  • 2004 Mazda 3 GX 4 Cyl 2.0L B1S1; California-Esv
Product Details
Location : Before Catalytic ConverterNotes : Air-Fuel sensor; For California-ESV(California Emission) ONLYType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25054029Connector Gender : Female ConnectorWarranty : 1-year JC Whitney unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Returns Policy : 30-Day Return Policy
After Catalytic Converter Oxygen Sensor, B1S1; California-Esv, Set of 2, 4-wire, 2.0L 4Cyl
DriveWire
After Catalytic Converter Oxygen Sensor, B1S1; California-Esv, Set of 2, 4-wire, 2.0L 4Cyl
Part Number: SET-REPM960920
Guaranteed to Fit
$72.99
Vehicle Fitment
  • 2004 Mazda 3 i 4 Cyl 2.0L B1S1; California-Esv
  • 2004 Mazda 3 GX 4 Cyl 2.0L B1S1; California-Esv
  • 2004 Mazda 3 GS 4 Cyl 2.0L B1S1; California-Esv
Product Details
Location : After Catalytic ConverterComponents : (2) Oxygen SensorType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitInterchange Part Number : 25024661, 25054029Warranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Returns Policy : 30-Day Return Policy
Before Catalytic Converter Oxygen Sensor, 4-Wire, Heated, Air Fuel Ratio Sensor
DriveWire
Before Catalytic Converter Oxygen Sensor, 4-Wire, Heated, Air Fuel Ratio Sensor
Part Number: REPM960920
Guaranteed to Fit
$45.99
Vehicle Fitment
  • 2004 Mazda 3 GS 4 Cyl 2.0L B1S1; California-Esv
  • 2004 Mazda 3 i 4 Cyl 2.0L B1S1; California-Esv
  • 2004 Mazda 3 GX 4 Cyl 2.0L B1S1; California-Esv
Product Details
Location : Before Catalytic ConverterNotes : Air-Fuel sensor; For California-ESV(California Emission) ONLYType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25054029Connector Gender : Female ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Returns Policy : 30-Day Return Policy
Before Catalytic Converter Oxygen Sensor, Without California Emissions, Sold individually, 4-wire, 4 Cyl 2.0L, OE Replacement Series - Before Catalytic Converter
Bosch®
Before Catalytic Converter Oxygen Sensor, Without California Emissions, Sold individually, 4-wire, 4 Cyl 2.0L, OE Replacement Series - Before Catalytic Converter
Part Number: BS15730
Guaranteed to Fit
$48.99
Vehicle Fitment
  • 2004 Mazda 3 S 4 Cyl 2.3L
  • 2004 Mazda 3 GX 4 Cyl 2.0L Without California Emissions
  • 2004 Mazda 3 i 4 Cyl 2.0L Without California Emissions
  • 2004 Mazda 3 GT 4 Cyl 2.3L
  • 2004 Mazda 3 GS 4 Cyl 2.0L Without California Emissions
Product Details
Location : Before Catalytic ConverterNotes : Heated Sensor TypeType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 25.6 in. Wire LengthThread Size : 18 mm Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 22 mm Hex SizeInterchange Part Number : USOS4000Connector Gender : Male ConnectorWarranty : 1-year Bosch 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.

Promotions : CarParts EuroEcomm Landing Page : EuroSeries : OE Replacement Series
Oxygen Sensor, Sold Individually, 3-wire, OE Replacement Series
Bosch®
Oxygen Sensor, Sold Individually, 3-wire, OE Replacement Series
Part Number: BS15740
Guaranteed to Fit
$49.99
Vehicle Fitment
  • 2004 Mazda 3 GX 4 Cyl 2.0L With California Emissions
  • 2004 Mazda 3 GS 4 Cyl 2.0L With California Emissions
  • 2004 Mazda 3 i 4 Cyl 2.0L With California Emissions
Product Details
Location : After Catalytic ConverterNotes : Heated Sensor TypeType : 3-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 18.1 in. Wire LengthThread Size : 18 mm Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 22 mm Hex SizeConnector Gender : Female ConnectorWarranty : 1-year Bosch 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.

Promotions : CarParts EuroEcomm Landing Page : EuroSeries : OE Replacement Series
After Catalytic Converter, Center Oxygen Sensor, B1S2; California-Esv; B1S3, Sold individually, 4-wire, 4 Cyl 2.0L, Walker Products Original Equipment Base Sensor - After Catalytic Converter, Center
Walker Products®
After Catalytic Converter, Center Oxygen Sensor, B1S2; California-Esv; B1S3, Sold individually, 4-wire, 4 Cyl 2.0L, Walker Products Original Equipment Base Sensor - After Catalytic Converter, Center
Part Number: 25024676
Guaranteed to Fit
$71.49
Vehicle Fitment
  • 2004 Mazda 3 GS 4 Cyl 2.0L B1S2; California-Esv; B1S3
  • 2004 Mazda 3 i 4 Cyl 2.0L B1S2; California-Esv; B1S3
  • 2004 Mazda 3 GX 4 Cyl 2.0L B1S2; California-Esv; B1S3
Product Details
Location : After Catalytic Converter, CenterNotes : HeatedType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 32.28 in. Wire LengthInterchange Part Number : RM96090019Warranty : 90-day Walker Products 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 : Walker Products Original Equipment Base Sensor
Before Catalytic Converter Oxygen Sensor, Sold Individually, 4-wire, 2.3L 4Cyl
Denso®
Before Catalytic Converter Oxygen Sensor, Sold Individually, 4-wire, 2.3L 4Cyl
Part Number: NP2344396
Guaranteed to Fit
$71.49
Vehicle Fitment
  • 2004 Mazda 3 GT 4 Cyl 2.3L
  • 2004 Mazda 3 GS 4 Cyl 2.0L Canada and Except California
  • 2004 Mazda 3 i 4 Cyl 2.0L Canada and Except California
  • 2004 Mazda 3 S 4 Cyl 2.3L
  • 2004 Mazda 3 GX 4 Cyl 2.0L Canada and Except California
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 18.1 in. Wire LengthInterchange Part Number : 15730, SG300Warranty : 1-year Denso 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.

After Catalytic Converter Oxygen Sensor, Located After Primary Converter, With California Emissions System, Sold Individually, 4-wire, 2.0L 4Cyl, OE Replacement Series
Bosch®
After Catalytic Converter Oxygen Sensor, Located After Primary Converter, With California Emissions System, Sold Individually, 4-wire, 2.0L 4Cyl, OE Replacement Series
Part Number: BS15916
Guaranteed to Fit
$75.49
Vehicle Fitment
  • 2004 Mazda 3 GS 4 Cyl 2.0L Located After Primary Converter, With California Emissions System
  • 2004 Mazda 3 i 4 Cyl 2.0L Located After Primary Converter, With California Emissions System
  • 2004 Mazda 3 GX 4 Cyl 2.0L Located After Primary Converter, With California Emissions System
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 33.5 in. Wire LengthInterchange Part Number : 15730, SG300Warranty : 1-year Bosch 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.

Promotions : CarParts EuroEcomm Landing Page : EuroSeries : OE Replacement Series
After Catalytic Converter Oxygen Sensor, FI, Naturally Aspirated, GAS, Sold individually, 4-wire, 4 Cyl 2.3L, Walker Products Aftermarket Base Sensor
Walker Products®
After Catalytic Converter Oxygen Sensor, FI, Naturally Aspirated, GAS, Sold individually, 4-wire, 4 Cyl 2.3L, Walker Products Aftermarket Base Sensor
Part Number: WKP35034182
Guaranteed to Fit
$58.49
Vehicle Fitment
  • 2004 Mazda 3 GT 4 Cyl 2.3L FI, Naturally Aspirated, GAS
  • 2004 Mazda 3 GS 4 Cyl 2.0L FI, Naturally Aspirated, GAS, Non Calif-ESV
  • 2004 Mazda 3 i 4 Cyl 2.0L FI, Naturally Aspirated, GAS, Non Calif-ESV
  • 2004 Mazda 3 S 4 Cyl 2.3L FI, Naturally Aspirated, GAS
  • 2004 Mazda 3 GX 4 Cyl 2.0L FI, Naturally Aspirated, GAS, Non Calif-ESV
Product Details
Location : After Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 31.5 in. Wire LengthWarranty : 90-day Walker Products 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 : Walker Products Aftermarket Base Sensor
After Catalytic Converter Oxygen Sensor, B1S2, Sold individually, 4-wire, 4 Cyl 2.3L, Walker Products Original Equipment Base Sensor
Walker Products®
After Catalytic Converter Oxygen Sensor, B1S2, Sold individually, 4-wire, 4 Cyl 2.3L, Walker Products Original Equipment Base Sensor
Part Number: 25024661
Guaranteed to Fit
$70.99
Vehicle Fitment
  • 2004 Mazda 3 GT 4 Cyl 2.3L B1S2
  • 2004 Mazda 3 GS 4 Cyl 2.0L B1S2; Non California-Esv
  • 2004 Mazda 3 i 4 Cyl 2.0L B1S2; Non California-Esv
  • 2004 Mazda 3 S 4 Cyl 2.3L B1S2
  • 2004 Mazda 3 GX 4 Cyl 2.0L B1S2; Non California-Esv
Product Details
Location : After Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 31.5 in. Wire LengthInterchange Part Number : RM96090018Warranty : 90-day Walker Products 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 : Walker Products Original Equipment Base Sensor
Before Catalytic Converter Oxygen Sensor, Sold Individually, 4-wire, Walker Products Aftermarket Base Sensor
Walker Products®
Before Catalytic Converter Oxygen Sensor, Sold Individually, 4-wire, Walker Products Aftermarket Base Sensor
Part Number: WKP35034192
Guaranteed to Fit
$69.49
Vehicle Fitment
  • 2004 Mazda 3 GT 4 Cyl 2.3L FI, Naturally Aspirated, GAS
  • 2004 Mazda 3 GS 4 Cyl 2.0L FI, Naturally Aspirated, GAS, Non Calif-ESV
  • 2004 Mazda 3 i 4 Cyl 2.0L FI, Naturally Aspirated, GAS, Non Calif-ESV
  • 2004 Mazda 3 S 4 Cyl 2.3L FI, Naturally Aspirated, GAS
  • 2004 Mazda 3 GX 4 Cyl 2.0L FI, Naturally Aspirated, GAS, Non Calif-ESV
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 18.11 in. Wire LengthWarranty : 90-day Walker Products 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 : Walker Products Aftermarket Base Sensor
Oxygen Sensor, Sold Individually, 4-wire, Walker Products Aftermarket Base Sensor
Walker Products®
Oxygen Sensor, Sold Individually, 4-wire, Walker Products Aftermarket Base Sensor
Part Number: WKP35034246
Guaranteed to Fit
$65.49
Vehicle Fitment
  • 2004 Mazda 3 GS 4 Cyl 2.0L FI, Naturally Aspirated, GAS, Calif-ESV
  • 2004 Mazda 3 i 4 Cyl 2.0L FI, Naturally Aspirated, GAS, Calif-ESV
  • 2004 Mazda 3 GX 4 Cyl 2.0L FI, Naturally Aspirated, GAS, Calif-ESV
Product Details
Location : After Catalytic Converter, CenterNotes : HeatedType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 32.28 in. Wire LengthWarranty : 90-day Walker Products 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 : Walker Products Aftermarket Base Sensor
Before Catalytic Converter Oxygen Sensor, B1S1, Sold individually, 4-wire, 4 Cyl 2.3L, Walker Products Original Equipment Base Sensor
Walker Products®
Before Catalytic Converter Oxygen Sensor, B1S1, Sold individually, 4-wire, 4 Cyl 2.3L, Walker Products Original Equipment Base Sensor
Part Number: 25024660
Guaranteed to Fit
$69.49
Vehicle Fitment
  • 2004 Mazda 3 GT 4 Cyl 2.3L B1S1
  • 2004 Mazda 3 GS 4 Cyl 2.0L B1S1; Non California-ESV
  • 2004 Mazda 3 i 4 Cyl 2.0L B1S1; Non California-ESV
  • 2004 Mazda 3 GX 4 Cyl 2.0L B1S1; Non California-ESV
  • 2004 Mazda 3 S 4 Cyl 2.3L B1S1
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 18.11 in. Wire LengthInterchange Part Number : 15730, SG300Warranty : 90-day Walker Products 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 : Walker Products Original Equipment Base Sensor
After Catalytic Converter Oxygen Sensor, Calif., Sold individually, 4-wire, 4 Cyl 2.0L - After Catalytic Converter
Denso®
After Catalytic Converter Oxygen Sensor, Calif., Sold individually, 4-wire, 4 Cyl 2.0L - After Catalytic Converter
Part Number: NP2344329
Guaranteed to Fit
$69.99
Vehicle Fitment
  • 2004 Mazda 3 GS 4 Cyl 2.0L Calif.
  • 2004 Mazda 3 i 4 Cyl 2.0L Calif.
  • 2004 Mazda 3 GX 4 Cyl 2.0L Calif.
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitInterchange Part Number : 15914Warranty : 1-year Denso 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.

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Helpful Automotive Resources

P2187 Code: System too Lean at Idle (Bank 1)
P2187 Code: System too Lean at Idle (Bank 1)Note that there is only one bank if your car has a straight engine and the scan tool will always refer to that bank as “Bank 1.” P2187 code indicates that your vehicle’s computer detected a potential issue with the fuel mixture at idle.
P2270 Code: O2 Sensor Signal Biased / Stuck Lean (Bank 1, Sensor 2)
P2270 Code: O2 Sensor Signal Biased / Stuck Lean (Bank 1, Sensor 2)Bank 1 is where the #1 spark plug is. O2 sensor 1/1 is the upstream sensor on Bank 1 (different for a Ford than for a Chevy or a Dodge), and O2 sensor 1/2 is the downstream sensor on Bank 1. O2 2/1 is upstream on Bank 2 and O2
P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)With that in mind, it’s important to note that Bank 1 is always where the number 1 cylinder is located. Thus, on Ford pickups, Bank 1 is the passenger side bank, but on Chevy and Dodge pickups, Bank 1 is the driver side bank. You need to know this, or
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.
P0135 Code: Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P0135 Code: Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)Diagnostic trouble code (DTC) P0135 stands for “Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1).” It is set when the car’s primary computer—also called the powertrain control module or PCM—determines that the heated oxygen sensor (HO2S) 1 heater current is higher or lower than the ideal amp for
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.