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2012 Ford Flex

2012 Ford Flex Oxygen Sensors

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Before Catalytic Converter, Oxygen Sensor, 5-Wire, Wideband Sensor
Part Number: REPA960912
Guaranteed to Fit
$56.49
Vehicle Fitment
  • 2012 Ford Flex Titanium 6 Cyl 3.5L Eng. VIN: T, FI, Turbocharged, GAS
  • 2012 Ford Flex SEL 6 Cyl 3.5L Eng. VIN: T, FI, Turbocharged, GAS
  • 2012 Ford Flex Limited 6 Cyl 3.5L Eng. VIN: T, FI, Turbocharged, GAS
Product Details
Location : Before Catalytic ConverterNotes : Wideband sensorType : 5-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 : 25025049Connector 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 Primary or Secondary Catalytic Converter Oxygen Sensor, 4-wire, 6 Cyl., 3.5L Engine
Part Number: REPF960911
Guaranteed to Fit
$21.71
Vehicle Fitment
  • 2012 Ford Flex SEL 6 Cyl 3.5L
  • 2012 Ford Flex Limited 6 Cyl 3.5L
  • 2012 Ford Flex Titanium 6 Cyl 3.5L
  • 2012 Ford Flex SE 6 Cyl 3.5L
Product Details
Location : After Primary or Secondary 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 : 25024983Connector 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
After Catalytic Converter, Front and Rear Oxygen Sensors, 4-wire, 6 Cylinder, 3.5L Engine
Part Number: SET-REPF960911-2
Guaranteed to Fit
$42.49
Vehicle Fitment
  • 2012 Ford Flex SEL 6 Cyl 3.5L
  • 2012 Ford Flex Titanium 6 Cyl 3.5L
  • 2012 Ford Flex Limited 6 Cyl 3.5L
  • 2012 Ford Flex SE 6 Cyl 3.5L
Product Details
Location : After Catalytic Converter, Front and RearComponents : (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 SizeConnector 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
Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 5-wire
Part Number: WKP35035046
Guaranteed to Fit
$101.99
Vehicle Fitment
  • 2012 Ford Flex Titanium 6 Cyl 3.5L Eng. VIN: T, FI, Turbocharged, GAS
  • 2012 Ford Flex SEL 6 Cyl 3.5L Eng. VIN: T, FI, Turbocharged, GAS
  • 2012 Ford Flex Limited 6 Cyl 3.5L Eng. VIN: T, FI, Turbocharged, GAS
Product Details
Location : Before Catalytic ConverterNotes : Wideband sensorType : 5-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 21.65 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
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS15383
Guaranteed to Fit
$54.99
Vehicle Fitment
  • 2012 Ford Flex Titanium 6 Cyl 3.5L Naturally Aspirated
  • 2012 Ford Flex SE 6 Cyl 3.5L Naturally Aspirated
  • 2012 Ford Flex SEL 6 Cyl 3.5L Naturally Aspirated
  • 2012 Ford Flex Limited 6 Cyl 3.5L Naturally Aspirated
Product Details
Location : After Catalytic ConverterNotes : Heated Sensor TypeType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitMounting Style : Threaded-in Mounting StyleHex Size : 22 mm Hex SizeConnector 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 : European Vehicle PartsSeries : OE Replacement Series
Motorcraft OE Replacement Oxygen Sensor, Sold individually 4-wire
Part Number: MIDY1178
Guaranteed to Fit
$166.49
Vehicle Fitment
  • 2012 Ford Flex SEL 6 Cyl 3.5L With Duratec Engine, Low Version, Located Before Converter
  • 2012 Ford Flex Titanium 6 Cyl 3.5L With Duratec Engine, Low Version, Located Before Converter
  • 2012 Ford Flex SE 6 Cyl 3.5L With Duratec Engine, Low Version, Located Before Converter
  • 2012 Ford Flex Limited 6 Cyl 3.5L With Duratec Engine, Low Version, Located Before Converter
Product Details
Location : UpperNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitReplaces OE Number : BL3Z9F472AWarranty : 2-year or unlimited-mile Motorcraft 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 : Motorcraft OE Replacement
Oxygen Sensor, Sold individually 5-wire
Part Number: NP2345097
Guaranteed to Fit
$88.99
Vehicle Fitment
  • 2012 Ford Flex Titanium 6 Cyl 3.5L Naturally Aspirated, O.E. Quality Replacement Sensor
  • 2012 Ford Flex SE 6 Cyl 3.5L Naturally Aspirated, O.E. Quality Replacement Sensor
  • 2012 Ford Flex SEL 6 Cyl 3.5L Naturally Aspirated, O.E. Quality Replacement Sensor
  • 2012 Ford Flex Limited 6 Cyl 3.5L Naturally Aspirated, O.E. Quality Replacement Sensor
Product Details
Location : Before Catalytic ConverterType : 5-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 11.54 in. Wire LengthThread Size : M18 Thread SizeConnector Gender : Male ConnectorWarranty : 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.

Motorcraft OE Replacement Oxygen Sensor, Sold individually
Part Number: MIDY1167
Guaranteed to Fit
$62.99
Vehicle Fitment
  • 2012 Ford Flex SEL 6 Cyl 3.5L Right
  • 2012 Ford Flex Titanium 6 Cyl 3.5L Right
  • 2012 Ford Flex SE 6 Cyl 3.5L Right
  • 2012 Ford Flex Limited 6 Cyl 3.5L Right
Product Details
Location : After Secondary Catalytic ConverterNotes : HeatedQuantity Sold : Sold individuallyProduct Fit : Direct FitReplaces OE Number : BA5Z9G444AWarranty : 2-year or unlimited-mile Motorcraft 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 : Motorcraft OE Replacement
After Secondary Catalytic Converter Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP35034001
Guaranteed to Fit
$39.99
Vehicle Fitment
  • 2012 Ford Flex SEL 6 Cyl 3.5L Eng. VIN: T, FI, Turbocharged, GAS
  • 2012 Ford Flex Titanium 6 Cyl 3.5L Eng. VIN: T, FI, Turbocharged, GAS
  • 2012 Ford Flex Limited 6 Cyl 3.5L Eng. VIN: T, FI, Turbocharged, GAS
Product Details
Location : After Secondary 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
After Secondary Catalytic Converter Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP25024998
Guaranteed to Fit
$45.49
Vehicle Fitment
  • 2012 Ford Flex SEL 6 Cyl 3.5L
  • 2012 Ford Flex Titanium 6 Cyl 3.5L
  • 2012 Ford Flex Limited 6 Cyl 3.5L
Product Details
Location : After Secondary 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 Original Equipment Base Sensor
Oxygen Sensor, Sold individually 4-wire
Part Number: NP2344491
Guaranteed to Fit
$44.99
Vehicle Fitment
  • 2012 Ford Flex Titanium 6 Cyl 3.5L Turbocharged, O.E. Quality Replacement Sensor
  • 2012 Ford Flex Limited 6 Cyl 3.5L Turbocharged, O.E. Quality Replacement Sensor
Product Details
Location : After Catalytic Converter, Passenger SideType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitConnector Gender : Female ConnectorWarranty : 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.

Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP25024983
Guaranteed to Fit
$51.49
Vehicle Fitment
  • 2012 Ford Flex SEL 6 Cyl 3.5L
  • 2012 Ford Flex Limited 6 Cyl 3.5L
  • 2012 Ford Flex Titanium 6 Cyl 3.5L
  • 2012 Ford Flex SE 6 Cyl 3.5L
Product Details
Location : After Primary or Secondary Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 12.8 in. Wire LengthInterchange Part Number : REPF960911Warranty : 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
Oxygen Sensor, Sold individually 4-wire
Part Number: DELES20409
Guaranteed to Fit
$57.99
Vehicle Fitment
  • 2012 Ford Flex SEL 6 Cyl 3.5L Naturally Aspirated
  • 2012 Ford Flex Limited 6 Cyl 3.5L Naturally Aspirated
  • 2012 Ford Flex Titanium 6 Cyl 3.5L Turbocharged
  • 2012 Ford Flex SE 6 Cyl 3.5L Naturally Aspirated
Product Details
Location : RearType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWarranty : 1-year or 12,000-mile Delphi 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
Part Number: WKP25025163
Guaranteed to Fit
$83.49
Vehicle Fitment
  • 2012 Ford Flex Titanium 6 Cyl 3.5L Eng Vin: T, FI, Turbocharged, GAS
  • 2012 Ford Flex SE 6 Cyl 3.5L Eng Vin: C, FI, Naturally Aspirated, GAS
  • 2012 Ford Flex SEL 6 Cyl 3.5L Eng Vin: C, FI, Naturally Aspirated, GAS
  • 2012 Ford Flex Limited 6 Cyl 3.5L Eng Vin: C, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic ConverterQuantity Sold : Sold individuallyProduct Fit : Direct FitWarranty : 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.

Oxygen Sensor, Sold individually
Part Number: WKP35035114
Guaranteed to Fit
$85.49
Vehicle Fitment
  • 2012 Ford Flex Titanium 6 Cyl 3.5L Eng Vin: T, FI, Turbocharged, GAS
  • 2012 Ford Flex SE 6 Cyl 3.5L Eng Vin: C, FI, Naturally Aspirated, GAS
  • 2012 Ford Flex SEL 6 Cyl 3.5L Eng Vin: C, FI, Naturally Aspirated, GAS
  • 2012 Ford Flex Limited 6 Cyl 3.5L Eng Vin: C, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic ConverterQuantity Sold : Sold individuallyWarranty : 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.

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Popular Products

Product Questions & Answers

Q:Is this the 02 sensor heater?
Sharon G.
A:BEST ANSWERHi Sharon, I'm glad to assist you. Yes. It is the front/upstream oxygen sensor. If your car appears in the vehicle fitment information below (after selecting the year, make, model, submodel, and engine size), it is a guaranteed fit part. Grab our discounted offer and click the link below to buy it today. Happy shopping! https://www.carparts.com/oxygen-sensor/walker-products/wkp25025163?can=cpje1043_CSQA_20241031 Show less
Jeonino E.
 
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.