2009 Mercury Mountaineer Oxygen Sensors

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After Catalytic Converter Oxygen Sensor, FI, Naturally Aspirated, GAS, Downstream, Sold Individually, 4-wire, 6 Cyl 4.0L
DriveWire
After Catalytic Converter Oxygen Sensor, FI, Naturally Aspirated, GAS, Downstream, Sold Individually, 4-wire, 6 Cyl 4.0L
Part Number: REPF960904
Guaranteed to Fit
$19.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L FI, Naturally Aspirated, GAS, Downstream
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L FI, Naturally Aspirated, GAS, Downstream
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L FI, Naturally Aspirated, GAS, Downstream
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
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
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
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 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 Catalytic Converter Oxygen Sensors, 4-wire, Rear Wheel Drive
DriveWire
Before Catalytic Converter Oxygen Sensors, 4-wire, Rear Wheel Drive
Part Number: SET-REPF960902-2
Guaranteed to Fit
$52.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 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
Oxygen Sensor, Sold individually, 4-wire, Walker Products Original Equipment Base Sensor
Walker Products®
Oxygen Sensor, Sold individually, 4-wire, Walker Products Original Equipment Base Sensor
Part Number: WKP250241127
Guaranteed to Fit
$45.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
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 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
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L 5-Speed
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L 5-Speed
  • 2009 Mercury Mountaineer Premier 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
Oxygen Sensor, Sold Individually, 4-wire
Denso®
Oxygen Sensor, Sold Individually, 4-wire
Part Number: NP2344127
Guaranteed to Fit
$31.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L O.E. Quality Replacement Sensor
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitInterchange 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: NP2344401
Guaranteed to Fit
$37.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L O.E. Quality Replacement Sensor
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 11 in. Wire LengthInterchange 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.

Before Catalytic Converter Oxygen Sensor, 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, FI, Naturally Aspirated, GAS, Sold individually, 4-wire, 6 Cyl 4.0L, Walker Products Aftermarket Base Sensor - Before Catalytic Converter
Part Number: WKP35034691
Guaranteed to Fit
$34.49
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L FI, Naturally Aspirated, GAS
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L FI, Naturally Aspirated, GAS
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L 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, 8 Cyl 4.6L - Before Catalytic Converter
NTK®
Before Catalytic Converter Oxygen Sensor, Sold individually, 4-wire, 8 Cyl 4.6L - Before Catalytic Converter
Part Number: NG22524
Guaranteed to Fit
$53.49
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
Product Details
Location : Before Catalytic ConverterNotes : Heated Sensor TypeType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 17.75 in. Wire LengthThread Size : 18 mm Thread SizeMounting Style : Threaded-in Mounting StyleInterchange Part Number : 15718Warranty : NGK 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, Sold individually, 8 Cyl 4.6L - After Catalytic Converter
Aceon®
After Catalytic Converter Oxygen Sensor, Sold individually, 8 Cyl 4.6L - After Catalytic Converter
Part Number: ACB88260001
Guaranteed to Fit
$66.66
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
Product Details
Location : After Catalytic ConverterQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWarranty : Aceon 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, FI, Naturally Aspirated, GAS, Downstream, Sold individually, 4-wire, 6 Cyl 4.0L, Walker Products Original Equipment Base Sensor - After Catalytic Converter
Walker Products®
After Catalytic Converter Oxygen Sensor, FI, Naturally Aspirated, GAS, Downstream, Sold individually, 4-wire, 6 Cyl 4.0L, Walker Products Original Equipment Base Sensor - After Catalytic Converter
Part Number: 25024001
Guaranteed to Fit
$46.49
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L FI, Naturally Aspirated, GAS, Downstream
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L FI, Naturally Aspirated, GAS, Downstream
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L FI, Naturally Aspirated, GAS, Downstream
Product Details
Location : After Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 15.75 in. Wire LengthInterchange Part Number : REPF960904Warranty : 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
Rear Oxygen Sensor, With 270mm Overall Length, Sold individually, 4-wire, 6 Cyl 4.0L - Rear
Delphi®
Rear Oxygen Sensor, With 270mm Overall Length, Sold individually, 4-wire, 6 Cyl 4.0L - Rear
Part Number: DELES20316
Guaranteed to Fit
$39.49
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L With 270mm Overall Length
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L With 270mm Overall Length
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L With 270mm Overall Length
Product Details
Location : RearType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 10.63 in. Wire LengthThread Size : 18 x 1.5 mm Thread SizeInterchange Part Number : 15718Warranty : 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.

Downstream Oxygen Sensor, Sold individually, 4-wire, 8 Cyl 4.6L, OE Replacement Series - Downstream
Bosch®
Downstream Oxygen Sensor, Sold individually, 4-wire, 8 Cyl 4.6L, OE Replacement Series - Downstream
Part Number: BS15729
Guaranteed to Fit
$38.49
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L 5-Speed
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L 5-Speed
Product Details
Location : DownstreamType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 29.7 in. Wire LengthInterchange Part Number : 15510Warranty : 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
Front Oxygen Sensor, With 280mm Overall Length, Sold individually, 4-wire, 4.6L - Front
Delphi®
Front Oxygen Sensor, With 280mm Overall Length, Sold individually, 4-wire, 4.6L - Front
Part Number: DELES20328
Guaranteed to Fit
$49.49
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L With 280mm Overall Length
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L With 280mm Overall Length
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L With 280mm Overall Length
Product Details
Location : FrontType : 4-wireQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWire Length : 11.02 in. Wire LengthThread Size : 18 x 1.5 mm Thread SizeInterchange Part Number : 15718Warranty : 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.

Driver Side, After Catalytic Converter Oxygen Sensor, Sold individually, 6 Cyl 4.0L - Driver Side, After Catalytic Converter
Motorcraft®
Driver Side, After Catalytic Converter Oxygen Sensor, Sold individually, 6 Cyl 4.0L - Driver Side, After Catalytic Converter
Part Number: MIDY1401
Guaranteed to Fit
$52.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
Product Details
Location : Driver Side, After Catalytic ConverterQuantity Sold : Sold IndividuallyProduct Fit : Direct FitWarranty : 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.

Page 1 of 3 | Showing 1 - 15 of 33 results

Top Rated Products

DriveWire After Catalytic Converter Oxygen Sensor, FI, Naturally Aspirated, GAS, Downstream, Sold Individually, 4-wire, 6 Cyl 4.0L
$31.99( Review)
Check engine light determined faulty O2 sensor bad that was recently installed (<3 See More
Anonymous
VERIFIED PURCHASER

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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.