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2009 Mercury Mountaineer
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Lifetime Replacement
2009 Mercury Mountaineer

2009 Mercury Mountaineer Oxygen Sensors

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After Catalytic Converter Oxygen Sensor, Sold Individualy, 4-Wire, (6 Cylinder, 4.0L Engine)/(8 Cylinder, 4.6L Engine)
DriveWire
After Catalytic Converter Oxygen Sensor, Sold Individualy, 4-Wire, (6 Cylinder, 4.0L Engine)/(8 Cylinder, 4.6L Engine)
Part Number: REPF960904
Guaranteed to Fit
$19.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 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
After Catalytic Converter Oxygen Sensors, 4-wire, 6/8 Cyl., 4.0/4.6L Engines
DriveWire
After Catalytic Converter Oxygen Sensors, 4-wire, 6/8 Cyl., 4.0/4.6L Engines
Part Number: SET-REPF960904-2
Guaranteed to Fit
$39.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 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
Before Catalytic Converter Oxygen Sensors, 4.6L Engine, Set of 2
DriveWire
Before Catalytic Converter Oxygen Sensors, 4.6L Engine, Set of 2
Part Number: SET-REPF960902-2
Guaranteed to Fit
$52.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
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
Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Walker Products®
Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP250241127
Guaranteed to Fit
$56.49
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
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
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Bosch®
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS15664
Guaranteed to Fit
$48.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L 5-Speed
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L 5-Speed
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 : European Vehicle PartsSeries : OE Replacement Series
Oxygen Sensor, Sold individually 4-wire
Denso®
Oxygen Sensor, Sold individually 4-wire
Part Number: NP2344127
Guaranteed to Fit
$32.49
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2009 Mercury Mountaineer Base 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
$40.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L O.E. Quality Replacement Sensor
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L 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.

Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Walker Products®
Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP35034691
Guaranteed to Fit
$37.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L FI, Naturally Aspirated, GAS
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L FI, Naturally Aspirated, GAS
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L 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
Oxygen Sensor, Sold individually 4-wire
NTK®
Oxygen Sensor, Sold individually 4-wire
Part Number: NG22524
Guaranteed to Fit
$50.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
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.

Oxygen Sensor, Sold individually
Aceon®
Oxygen Sensor, Sold individually
Part Number: ACB88260001
Guaranteed to Fit
$66.66
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
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.

Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Walker Products®
Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: 25024001
Guaranteed to Fit
$44.99
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
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
Oxygen Sensor, Sold individually 4-wire
Delphi®
Oxygen Sensor, Sold individually 4-wire
Part Number: DELES20316
Guaranteed to Fit
$40.49
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L With 270mm Overall Length
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L With 270mm Overall Length
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L 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.

OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Bosch®
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS15729
Guaranteed to Fit
$40.49
Vehicle Fitment
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L 5-Speed
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L
  • 2009 Mercury Mountaineer Premier 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 : European Vehicle PartsSeries : OE Replacement Series
Oxygen Sensor, Sold individually 4-wire
Delphi®
Oxygen Sensor, Sold individually 4-wire
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 8 Cyl 4.6L With 280mm Overall Length
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L 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.

Motorcraft OE Replacement Oxygen Sensor, Sold individually 4-wire
Motorcraft®
Motorcraft OE Replacement Oxygen Sensor, Sold individually 4-wire
Part Number: MIDY1093
Guaranteed to Fit
$57.49
Vehicle Fitment
  • 2009 Mercury Mountaineer Premier 8 Cyl 4.6L 393 mm. Length
  • 2009 Mercury Mountaineer Premier 6 Cyl 4.0L 393 mm. Length
  • 2009 Mercury Mountaineer Base 6 Cyl 4.0L 393 mm. Length
Product Details
Location : Driver Side, After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 17 in. Wire LengthInterchange Part Number : 15718Warranty : 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
Page 1 of 3 | Showing 1 - 15 of 37 results

Top Rated Products

DriveWire Before Catalytic Converter Oxygen Sensors, 4.6L Engine, Set of 2
$52.99( Review)
All parts fit
Roger S.
VERIFIED PURCHASER
DriveWire After Catalytic Converter Oxygen Sensor, Sold Individualy, 4-Wire, (6 Cylinder, 4.0L Engine)/(8 Cylinder, 4.6L Engine)
$19.99( Review)
Great quality parts love this place
Christopher J. M.
VERIFIED PURCHASER

Popular Products

Product Questions & Answers

Motorcraft Motorcraft OE Replacement Oxygen Sensor, Sold individually 4-wire
$57.49
Q:does the same sensor go to both banks ?
Bank 2 sensor 1 02 sensor
A:BEST ANSWERHi Gerry, thank you for reaching out! It depends on the vehicle. What do you have? Show less
Andrew B.
 
1 Question, 1 AnswerView all Q&As >
Bosch OE Replacement Series Oxygen Sensor, Sold individually 4-wire
$40.49
Q:Is their a differents between upstream and down stream oxgen sensors ? Show Less
Ronnie M.
A:BEST ANSWERHi Ronnie, I'm glad to assist you. Yes, there is a difference. For us to check carefully and be accurate on the part you need, please provide the complete details of your vehicle (year, make, model, submodel, 2WD/4WD, and engine size). The VIN would be helpful. Show less
Jeonino E.
 
2 Questions, 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.