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2002 Ford Explorer
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2002 Ford Explorer

2002 Ford Explorer Oxygen Sensors

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After Catalytic Converter Oxygen Sensor, Sold Individually, 4-Wire, (6 Cyl., 4.0L Engine)/(8 Cyl., 4.6L Engine)
DriveWire
After Catalytic Converter Oxygen Sensor, Sold Individually, 4-Wire, (6 Cyl., 4.0L Engine)/(8 Cyl., 4.6L Engine)
Part Number: REPF960904
Guaranteed to Fit
$19.99
Vehicle Fitment
  • 2002 Ford Explorer XLT 6 Cyl 4.0L
  • 2002 Ford Explorer XLT 8 Cyl 4.6L
  • 2002 Ford Explorer Eddie Bauer 6 Cyl 4.0L
  • 2002 Ford Explorer Eddie Bauer 8 Cyl 4.6L
  • 2002 Ford Explorer Postal 6 Cyl 4.0L
  • 2002 Ford Explorer XLS 6 Cyl 4.0L
  • 2002 Ford Explorer Limited 6 Cyl 4.0L
  • 2002 Ford Explorer Limited 8 Cyl 4.6L
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 15.75 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024001Connector Gender : Male 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 and After Catalytic Converter Oxygen Sensor, Set of 2, 4-wire, 8 Cyl 4.6L - Before and After Catalytic Converter
DriveWire
Before and After Catalytic Converter Oxygen Sensor, Set of 2, 4-wire, 8 Cyl 4.6L - Before and After Catalytic Converter
Part Number: SET-REPF960904-2A
Guaranteed to Fit
$35.99
Vehicle Fitment
  • 2002 Ford Explorer XLT 8 Cyl 4.6L
  • 2002 Ford Explorer Eddie Bauer 8 Cyl 4.6L
  • 2002 Ford Explorer Limited 8 Cyl 4.6L
Product Details
Location : Before and After Catalytic ConverterType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeConnector Gender : Male 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
After Catalytic Converter Oxygen Sensor, Set of 2, 4-wire, 6 Cyl 4.0L
DriveWire
After Catalytic Converter Oxygen Sensor, Set of 2, 4-wire, 6 Cyl 4.0L
Part Number: SET-REPF960904-2
Guaranteed to Fit
$38.99
Vehicle Fitment
  • 2002 Ford Explorer XLT 6 Cyl 4.0L
  • 2002 Ford Explorer XLT 8 Cyl 4.6L
  • 2002 Ford Explorer Eddie Bauer 6 Cyl 4.0L
  • 2002 Ford Explorer Eddie Bauer 8 Cyl 4.6L
  • 2002 Ford Explorer Postal 6 Cyl 4.0L
  • 2002 Ford Explorer XLS 6 Cyl 4.0L
  • 2002 Ford Explorer Limited 6 Cyl 4.0L
  • 2002 Ford Explorer Limited 8 Cyl 4.6L
Product Details
Location : After Catalytic ConverterComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitWire Length : 15.75 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeConnector Gender : Male 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
After Catalytic Converter Oxygen Sensors, Set of 4, 4-Wire, (6 Cyl., 4.0L Engine)/(8 Cyl., 4.6L Engine)
DriveWire
After Catalytic Converter Oxygen Sensors, Set of 4, 4-Wire, (6 Cyl., 4.0L Engine)/(8 Cyl., 4.6L Engine)
Part Number: SET-REPF960904-4
Guaranteed to Fit
$78.49
Vehicle Fitment
  • 2002 Ford Explorer XLT 6 Cyl 4.0L
  • 2002 Ford Explorer XLT 8 Cyl 4.6L
  • 2002 Ford Explorer Eddie Bauer 6 Cyl 4.0L
  • 2002 Ford Explorer Eddie Bauer 8 Cyl 4.6L
  • 2002 Ford Explorer Postal 6 Cyl 4.0L
  • 2002 Ford Explorer XLS 6 Cyl 4.0L
  • 2002 Ford Explorer Limited 6 Cyl 4.0L
  • 2002 Ford Explorer Limited 8 Cyl 4.6L
Product Details
Location : After Catalytic ConverterComponents : (4) Oxygen SensorsType : 4-wireQuantity Sold : Set of 4Product Fit : Direct FitWire Length : 15.75 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeConnector Gender : Male 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, Sold individually, 4-wire, 6 Cyl 4.0L
DriveWire
Before Catalytic Converter Oxygen Sensor, Sold individually, 4-wire, 6 Cyl 4.0L
Part Number: REPF960902
Guaranteed to Fit
$27.99
Vehicle Fitment
  • 2002 Ford Explorer XLT 6 Cyl 4.0L
  • 2002 Ford Explorer Eddie Bauer 6 Cyl 4.0L
  • 2002 Ford Explorer Postal 6 Cyl 4.0L
  • 2002 Ford Explorer XLS 6 Cyl 4.0L
  • 2002 Ford Explorer Limited 6 Cyl 4.0L
Product Details
Location : Before Catalytic ConverterType : 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 : 25024701Connector Gender : Male 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, Set of 2, 4-wire, 8 Cyl 4.6L
DriveWire
Before Catalytic Converter Oxygen Sensor, Set of 2, 4-wire, 8 Cyl 4.6L
Part Number: SET-REPF960902-2
Guaranteed to Fit
$52.99
Vehicle Fitment
  • 2002 Ford Explorer XLT 8 Cyl 4.6L
  • 2002 Ford Explorer Eddie Bauer 8 Cyl 4.6L
  • 2002 Ford Explorer Limited 8 Cyl 4.6L
Product Details
Location : Before Catalytic ConverterComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024701Connector Gender : Male 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 and After Catalytic Converter Oxygen Sensor, enginevinnname: E, FI, Naturally Aspirated, GAS, Set of 4, 4-wire, 6 Cyl 4.0L
DriveWire
Before and After Catalytic Converter Oxygen Sensor, enginevinnname: E, FI, Naturally Aspirated, GAS, Set of 4, 4-wire, 6 Cyl 4.0L
Part Number: SET-REPF960902-4
Guaranteed to Fit
$106.49
Vehicle Fitment
  • 2002 Ford Explorer XLT 6 Cyl 4.0L enginevinnname: E, FI, Naturally Aspirated, GAS
  • 2002 Ford Explorer Eddie Bauer 6 Cyl 4.0L enginevinnname: E, FI, Naturally Aspirated, GAS
  • 2002 Ford Explorer Postal 6 Cyl 4.0L enginevinnname: E, FI, Naturally Aspirated, GAS
  • 2002 Ford Explorer XLS 6 Cyl 4.0L enginevinnname: E, FI, Naturally Aspirated, GAS
  • 2002 Ford Explorer Limited 6 Cyl 4.0L enginevinnname: E, FI, Naturally Aspirated, GAS
Product Details
Location : Before And After Catalytic ConverterComponents : (4) Oxygen SensorsType : 4-wireQuantity Sold : Set of 4Product Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024701Connector Gender : Male 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, Sold individually, 4-wire, 6 Cyl 4.0L
DriveWire
Before Catalytic Converter Oxygen Sensor, Sold individually, 4-wire, 6 Cyl 4.0L
Part Number: REPF960907
Guaranteed to Fit
$17.99
Vehicle Fitment
  • 2002 Ford Explorer Eddie Bauer 6 Cyl 4.0L
  • 2002 Ford Explorer XLT 6 Cyl 4.0L
  • 2002 Ford Explorer XLT 8 Cyl 4.6L
  • 2002 Ford Explorer Eddie Bauer 8 Cyl 4.6L
  • 2002 Ford Explorer Limited 8 Cyl 4.6L
  • 2002 Ford Explorer Postal 6 Cyl 4.0L
  • 2002 Ford Explorer XLS 6 Cyl 4.0L
  • 2002 Ford Explorer Limited 6 Cyl 4.0L
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 11 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024749Connector Gender : Male 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, Driver and Passenger S Oxygen Sensor, Engine Vin: K, FI, Naturally Aspirated, FLEX, Set of 2, 4-wire, 6 Cyl 4.0L
DriveWire
Before Catalytic Converter, Driver and Passenger S Oxygen Sensor, Engine Vin: K, FI, Naturally Aspirated, FLEX, Set of 2, 4-wire, 6 Cyl 4.0L
Part Number: SET-REPF960907-2
Guaranteed to Fit
$33.99
Vehicle Fitment
  • 2002 Ford Explorer XLT 6 Cyl 4.0L Engine Vin: K, FI, Naturally Aspirated, FLEX
  • 2002 Ford Explorer XLT 8 Cyl 4.6L Engine VIN: W, FI, Naturally Aspirated, GAS
  • 2002 Ford Explorer Postal 6 Cyl 4.0L Engine Vin: K, FI, Naturally Aspirated, FLEX
  • 2002 Ford Explorer Eddie Bauer 6 Cyl 4.0L Engine Vin: K, FI, Naturally Aspirated, FLEX
  • 2002 Ford Explorer Eddie Bauer 8 Cyl 4.6L Engine VIN: W, FI, Naturally Aspirated, GAS
  • 2002 Ford Explorer XLS 6 Cyl 4.0L Engine Vin: K, FI, Naturally Aspirated, FLEX
  • 2002 Ford Explorer Limited 6 Cyl 4.0L Engine Vin: K, FI, Naturally Aspirated, FLEX
  • 2002 Ford Explorer Limited 8 Cyl 4.6L Engine VIN: W, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic Converter, Driver and Passenger SideComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitWire Length : 11 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024749Connector Gender : Male 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, Sold individually, 4-wire, 6 Cyl 4.0L
DriveWire
Before Catalytic Converter Oxygen Sensor, Sold individually, 4-wire, 6 Cyl 4.0L
Part Number: RF96090005
Guaranteed to Fit
$19.54
Vehicle Fitment
  • 2002 Ford Explorer XLT 6 Cyl 4.0L
  • 2002 Ford Explorer Eddie Bauer 6 Cyl 4.0L
  • 2002 Ford Explorer Postal 6 Cyl 4.0L
  • 2002 Ford Explorer XLS 6 Cyl 4.0L
  • 2002 Ford Explorer Limited 6 Cyl 4.0L
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 17.72 in. Wire LengthInterchange Part Number : 25024701Warranty : 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, Eng. VIN: E, FI, Naturally Aspirated, GAS, Sold individually, 4-wire, 6 Cyl 4.0L, Walker Products Aftermarket Base Sensor - Before Catalytic Converter
Walker Products®
Before Catalytic Converter Oxygen Sensor, Eng. VIN: E, FI, Naturally Aspirated, GAS, Sold individually, 4-wire, 6 Cyl 4.0L, Walker Products Aftermarket Base Sensor - Before Catalytic Converter
Part Number: WKP35034539
Guaranteed to Fit
$38.49
Vehicle Fitment
  • 2002 Ford Explorer XLT 6 Cyl 4.0L Eng. VIN: E, FI, Naturally Aspirated, GAS
  • 2002 Ford Explorer Eddie Bauer 6 Cyl 4.0L Eng. VIN: E, FI, Naturally Aspirated, GAS
  • 2002 Ford Explorer Postal 6 Cyl 4.0L Eng. VIN: E, FI, Naturally Aspirated, GAS
  • 2002 Ford Explorer XLS 6 Cyl 4.0L Eng. VIN: E, FI, Naturally Aspirated, GAS
  • 2002 Ford Explorer Limited 6 Cyl 4.0L Eng. VIN: E, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 17.72 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, Sold individually, 4-wire, 6 Cyl 4.0L, Walker Products Original Equipment Base Sensor - Before Catalytic Converter
Walker Products®
Before Catalytic Converter Oxygen Sensor, Sold individually, 4-wire, 6 Cyl 4.0L, Walker Products Original Equipment Base Sensor - Before Catalytic Converter
Part Number: WKP25024749
Guaranteed to Fit
$37.99
Vehicle Fitment
  • 2002 Ford Explorer Eddie Bauer 6 Cyl 4.0L
  • 2002 Ford Explorer XLT 6 Cyl 4.0L
  • 2002 Ford Explorer XLT 8 Cyl 4.6L
  • 2002 Ford Explorer Eddie Bauer 8 Cyl 4.6L
  • 2002 Ford Explorer Limited 8 Cyl 4.6L
  • 2002 Ford Explorer Postal 6 Cyl 4.0L
  • 2002 Ford Explorer XLS 6 Cyl 4.0L
  • 2002 Ford Explorer Limited 6 Cyl 4.0L
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 11.02 in. Wire LengthInterchange Part Number : REPF960907Warranty : 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
Upstream Oxygen Sensor, Sold individually, 4-wire, 8 Cyl 4.6L, OE Replacement Series - Upstream
Bosch®
Upstream Oxygen Sensor, Sold individually, 4-wire, 8 Cyl 4.6L, OE Replacement Series - Upstream
Part Number: BS15664
Guaranteed to Fit
$38.99
Vehicle Fitment
  • 2002 Ford Explorer XLT 8 Cyl 4.6L
  • 2002 Ford Explorer Eddie Bauer 8 Cyl 4.6L
  • 2002 Ford Explorer Limited 8 Cyl 4.6L
Product Details
Location : UpstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 12.2 in. Wire LengthReplaces OE Number : XL3Z9F472AA, ZZR118861Interchange Part Number : 15718, XL3Z9F472AA, ZZR118861Warranty : 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 EuroSeries : OE Replacement Series
After Catalytic Converter Oxygen Sensor, Eng.VIN: E, O.E. Quality Replacement Sensor, Sold individually, 4-wire, 6 Cyl 4.0L - After Catalytic Converter
Denso®
After Catalytic Converter Oxygen Sensor, Eng.VIN: E, O.E. Quality Replacement Sensor, Sold individually, 4-wire, 6 Cyl 4.0L - After Catalytic Converter
Part Number: NP2344071
Guaranteed to Fit
$34.99
Vehicle Fitment
  • 2002 Ford Explorer Eddie Bauer 6 Cyl 4.0L Eng.VIN: E, O.E. Quality Replacement Sensor
  • 2002 Ford Explorer XLT 6 Cyl 4.0L Eng.VIN: E, O.E. Quality Replacement Sensor
  • 2002 Ford Explorer Postal 6 Cyl 4.0L Eng.VIN: E, O.E. Quality Replacement Sensor
  • 2002 Ford Explorer XLS 6 Cyl 4.0L Eng.VIN: E, O.E. Quality Replacement Sensor
  • 2002 Ford Explorer Limited 6 Cyl 4.0L Eng.VIN: E, O.E. Quality Replacement Sensor
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitReplaces OE Number : 5W6Z9G444AA, 5W6Z9G444BA, F85Z9G444AB, F85Z9G444BAInterchange Part Number : 15718Warranty : 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.

Oxygen Sensor, Sold individually, 4-wire
Denso®
Oxygen Sensor, Sold individually, 4-wire
Part Number: NP2344609
Guaranteed to Fit
$33.49
Vehicle Fitment
  • 2002 Ford Explorer Eddie Bauer 6 Cyl 4.0L Eng.VIN: K, O.E. Quality Replacement Sensor
  • 2002 Ford Explorer XLT 6 Cyl 4.0L Eng.VIN: K, O.E. Quality Replacement Sensor
  • 2002 Ford Explorer XLT 8 Cyl 4.6L O.E. Quality Replacement Sensor
  • 2002 Ford Explorer Eddie Bauer 8 Cyl 4.6L O.E. Quality Replacement Sensor
  • 2002 Ford Explorer Postal 6 Cyl 4.0L Eng.VIN: K, O.E. Quality Replacement Sensor
  • 2002 Ford Explorer XLS 6 Cyl 4.0L Eng.VIN: K, O.E. Quality Replacement Sensor
  • 2002 Ford Explorer Limited 6 Cyl 4.0L Eng.VIN: K, O.E. Quality Replacement Sensor
  • 2002 Ford Explorer Limited 8 Cyl 4.6L O.E. Quality Replacement Sensor
Product Details
Location : After Catalytic Converter, Passenger SideType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : ES20104Warranty : 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.

Page 1 of 4 | Showing 1 - 15 of 56 results

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DriveWire Before and After Catalytic Converter Oxygen Sensors, 4-wire
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So far so good. It's too early to tell in the long run how the 02 sensors will work,See More
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DriveWire Before and After Catalytic Converter Oxygen Sensors, 4-Wire, Heated
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Fit just right works good
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DriveWire After Catalytic Converter Oxygen Sensor, Sold Individualy, 4-Wire, (6 Cylinder, 4.0L Engine)/(8 Cylinder, 4.6L Engine)
$19.99( Review)
Don’t have this car anymore
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Popular Products

Product Questions & Answers

Denso Oxygen Sensor, Sold individually, 4-wire
$33.49
Q:How long is the wire?
Lee R.
A:BEST ANSWERHi Lee, thank you for reaching out! Upon checking, it is 18 inches. Click the link below to order the part while stocks last. Remember to check the part's fitment to your vehicle before checking out. Have a great day! https://www.carparts.com/oxygen-sensor/denso/np2344609?can=cpab2020_csqa_20250116 Show less
Andrew B.
 
1 Question, 1 AnswerView all Q&As >

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.