Genuine Mercury Mountaineer Oxygen Sensors

Oxygen O2 Sensor

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5 Oxygen Sensors found

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Mercury Mountaineer Sensor - Hego
Part Number: XL3Z-9F472-AA
$67.32 MSRP: $111.27
You Save: $43.95 (40%)
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Product Specifications
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2004-2010 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Mountaineer Sensor Assembly
Part Number: F85Z-9G444-BA
$62.35 MSRP: $85.20
You Save: $22.85 (27%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor Assy
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2004-2010 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Mountaineer Sensor - Hego
Part Number: XC2Z-9F472-AA
$50.60 MSRP: $83.64
You Save: $33.04 (40%)
Ships in 1 Business Day
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Product Specifications
- Position: Passenger Side
- Replaced by: GU2Z-9G444-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2003 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L Romeo SOHC EFI | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Mountaineer Sensor - Hego
Part Number: XL3Z-9F472-BA
$35.80 MSRP: $57.09
You Save: $21.29 (38%)
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Product Specifications
- Other Name: Front Oxygen Sensor, Oxygen Sensor
- Position: Driver Side & Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2001 Mercury Mountaineer | 6 Cyl 4.0L | 4AT 4R70W, 5AT 5R55E
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Mercury Mountaineer Sensor - Hego
Part Number: F85Z-9G444-AB
$50.60 MSRP: $83.64
You Save: $33.04 (40%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Position: Passenger Side
- Replaced by: GU2Z-9G444-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2004-2005 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L Romeo SOHC EFI | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- 1998-2001 Mercury Mountaineer | 6 Cyl 4.0L | 4AT 4R70W, 5AT 5R55E

Mercury Mountaineer Oxygen Sensors

The Mercury Mountaineer Oxygen Sensors are the essential items that make great differences to the Mercury Mountaineer Oxygen vehicles. These sensors closely track the concentrations of unburned oxygen which can be present in the exhaust of an engine, thus ensuring that the air-fuel blend at the cylinders will allow the engines' fuel to combust efficiently and still produce as little emissions as possible. The Mercury Mountaineer Oxygen Sensors construct a voltage signal concerning the oxygen concentration making it possible for the engine control computer to modify the fuel injector pulse width hence giving a closed loop work that enhances the efficiency of the catalytic converter. Designed for Mercury Mountaineer models manufactured between 1996 and 2010, these sensors are usually zirconium dioxide ones, and the car may be equipped with narrow-band or wide-band ones for accurate air-fuel ration measurement. Rich/lean sensors are used in the narrow-band system, and wide-band are used in providing a broad band signal, overall improving vehicle performance and safety. The Mercury Mountaineer Oxygen Sensors should be checked from time to time as the degradation of the sensors results to higher emission rates and low fuel economy. The Mercury Mountaineer is popular for its luxury and powerful engine; thus, it is considered reliable, and its Oxygen Sensors are not exceptions to this in the auto market. As known, the Mercury Mountaineer Oxygen Sensors contribute to the enhancement of engine performance and lowered emission of hazardous gases; thus, taking part in the preservation of the car's quality and popularity among buyers who are in search of both comfort and durability.

We provide a wide range of Mercury Mountaineer Oxygen Sensors at the best prices possible. If you need Mercury Mountaineer Oxygen Sensors, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your door step with a fast delivery service.