What is the general information about Oxygen Sensor and their role on Ford Escape?

An oxygen sensor functions as a galvanic battery that generates a small voltage output based on the oxygen levels in exhaust gases, providing essential input for the feedback loop with the Powertrain Control Module (PCM) to maintain the ideal air/fuel ratio of 14.7:1 for optimal catalyst performance. Vehicles equipped with On-Board Diagnostics II (OBD-II) utilize two Oxygen Sensor-one before and one after the catalytic converter-to assess converter efficiency by comparing oxygen levels in the exhaust gases. Four-cylinder models feature one upstream and one downstream heated oxygen sensor, while V6 models have four heated sensors, with two for each cylinder head and multiple catalysts. All sensors are heated to reduce warm-up time, and care must be taken during servicing to avoid damaging the permanently attached pigtail and electrical connector, as well as to keep contaminants away from the sensor. When replacing an oxygen sensor, it is advisable to warm the engine to ease removal, apply anti-seize compound to the threads if reusing an old sensor, and ensure proper torque during installation. After reconnecting the battery, the PCM must relearn its idle and fuel trim strategy for optimal performance.

Genuine Ford Escape Oxygen Sensor

Oxygen O2 Sensor

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54 Oxygen Sensors found

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Ford Escape Upper Oxygen Sensor
Part Number: E1GZ-9F472-B
$148.16 MSRP: $240.00
You Save: $91.84 (39%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor - Hego; Oxygen Sensor, Upper Oxygen Sensor
- Manufacturer Note: RH/LH
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2017-2019 Ford Escape | 4 Cyl 1.5L EcoBoost 16V (180PS) | 6-Speed Automatic Transmission 6F Mid-Range, Four-Wheel Drive, Four-Wheel Drive (Part Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Front-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive)
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Ford Escape Lower Oxygen Sensor
Part Number: BE5Z-9G444-A
$72.47 MSRP: $117.38
You Save: $44.91 (39%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor - Exhaust Gas - Oxygen
- Position: Front
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2012 Ford Escape | 4 Cyl 2.5L PFI Gas/Electric, 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
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Ford Escape Hego Sensor
Part Number: 5C5Z-9F472-AA
$58.47 MSRP: $94.73
You Save: $36.26 (39%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor - Hego
- Position: Passenger Side
- Replaced by: GU2Z-9G444-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2008 Ford Escape | 6 Cyl 3.0L DOHC EFI Modular | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Ford Escape Lower Oxygen Sensor
Part Number: BE5Z-9G444-B
$80.86 MSRP: $114.76
You Save: $33.90 (30%)
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Product Specifications
- Other Name: Sensor - Exhaust Gas - Oxygen
- Manufacturer Note: Rear
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2012 Ford Escape | 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
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Ford Escape Front Oxygen Sensor
Part Number: DS7Z-9F472-A
$97.73 MSRP: $158.33
You Save: $60.60 (39%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor - Hego
- Position: Upper
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2013-2016 Ford Escape | 4 Cyl 1.6L EcoBoost SCTi -Sigma | 6-Speed Automatic Transmission 6F Mid-Range, Four-Wheel Drive, Four-Wheel Drive (Part Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Front-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive)
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Ford Escape Lower Oxygen Sensor
Part Number: CJ5Z-9G444-B
$74.92 MSRP: $106.35
You Save: $31.43 (30%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor - Exhaust Gas - Oxygen
- Position: Lower
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2013-2016 Ford Escape | 4 Cyl 2.5L Duratec (110kW/150PS) | 6-Speed Automatic Transmission 6F Mid-Range, Four-Wheel Drive, Four-Wheel Drive (Part Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Front-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive)
View related parts
Ford Escape Front Oxygen Sensor
Part Number: BA5Z-9F472-A
$91.37 MSRP: $148.00
You Save: $56.63 (39%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor - Hego
- Manufacturer Note: Front Or Rear
- Position: Upper
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2013-2016 Ford Escape | 4 Cyl 2.0L | 6-Speed Automatic Transmission 6F Mid-Range, Four-Wheel Drive, Four-Wheel Drive (Part Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Front-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive)
View related parts
Ford Escape Front Oxygen Sensor
Part Number: 5L8Z-9F472-BA
$60.60 MSRP: $98.16
You Save: $37.56 (39%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Sensor - Hego
- Manufacturer Note: Rear
- Position: Front
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2010 Ford Escape | 4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC, 4 Cyl 2.5L Duratec (110kW/150PS) | 4AT CD4E, 5-Speed Manual Transmission, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)
View related parts
Ford Escape Front Oxygen Sensor
Part Number: 8F9Z-9F472-B
$101.69 MSRP: $164.73
You Save: $63.04 (39%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Sensor - Hego
- Manufacturer Note: Front Or Rear
- Position: Upper
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2012 Ford Escape | 4 Cyl 2.5L PFI Gas/Electric | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Ford Escape Front Oxygen Sensor
Part Number: E1GZ-9F472-C
$90.24 MSRP: $146.18
You Save: $55.94 (39%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor - Hego
- Position: Front
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2017-2019 Ford Escape | 4 Cyl 2.0L EcoBoost (240PS) | 6-Speed Automatic Transmission 6F Mid-Range, Four-Wheel Drive, Four-Wheel Drive (Part Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Front-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive)
View related parts
Ford Escape Front Oxygen Sensor
Part Number: 9E5Z-9F472-D
$99.42 MSRP: $161.05
You Save: $61.63 (39%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor - Hego
- Position: Front And Rear
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2010-2012 Ford Escape | 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Ford Escape Front Oxygen Sensor
Part Number: 5L8Z-9F472-AA
$60.45 MSRP: $84.13
You Save: $23.68 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor - Hego
- Manufacturer Note: Rear
- Position: Front
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009 Ford Escape | 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Ford Escape Upper Oxygen Sensor
Part Number: EJ5Z-9F472-A
$73.87 MSRP: $119.65
You Save: $45.78 (39%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor - Hego; Oxygen Sensor, Upper Oxygen Sensor
- Position: Upper
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2014-2016 Ford Escape | 4 Cyl 2.5L Duratec (110kW/150PS) | 6-Speed Automatic Transmission 6F Mid-Range, Four-Wheel Drive, Four-Wheel Drive (Part Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Front-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive)
View related parts
Ford Escape Oxygen Exhaust Gas Sensor
Part Number: 5W6Z-9G444-BA
$58.47 MSRP: $94.73
You Save: $36.26 (39%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Sensor - Exhaust Gas - Oxygen
- Position: Front
- Replaced by: GU2Z-9G444-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008-2010 Ford Escape | 4 Cyl 2.3L, 4 Cyl 2.5L PFI Gas/Electric, 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
- 2005-2006 Ford Escape | 4 Cyl 2.3L | 4AT CD4E, 5-Speed Manual Transmission, 5-Speed Manual Transmission - AK, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)
View related parts
Ford Escape Lower Oxygen Sensor
Part Number: CV6Z-9G444-B
$67.34 MSRP: $109.09
You Save: $41.75 (39%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor - Exhaust Gas - Oxygen
- Position: Lower
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2013-2016 Ford Escape | 4 Cyl 2.0L | 6-Speed Automatic Transmission 6F Mid-Range, Four-Wheel Drive, Four-Wheel Drive (Part Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Front-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive)
View related parts
Ford Escape Lower Oxygen Sensor
Part Number: ED8Z-9G444-A
$48.42 MSRP: $78.44
You Save: $30.02 (39%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor - Exhaust Gas - Oxygen; Lower Oxygen Sensor, Oxygen Sensor
- Position: Lower
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2017-2019 Ford Escape | 4 Cyl 2.5L Duratec FFV (125kW/170PS) | 6-Speed Automatic Transmission 6F Mid-Range, Four-Wheel Drive, Four-Wheel Drive (Part Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Front-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive)
View related parts
Ford Escape Lower Oxygen Sensor
Part Number: 5L8Z-9G444-F
$59.44 MSRP: $96.29
You Save: $36.85 (39%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor - Exhaust Gas - Oxygen
- Manufacturer Note: Rear
- Replaces: 5L8Z-9G444-H, 5L8Z-9G444-J
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2010 Ford Escape | 6 Cyl 3.0L DOHC EFI Modular, 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Ford Escape Oxygen Sensor
Part Number: YL8Z-9F472-AA
$52.51 MSRP: $85.05
You Save: $32.54 (39%)
ADD TO CART
Product Specifications
- Other Name: Sensor - Hego; Oxygen Sensor
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2004 Ford Escape | 4 Cyl 2.0L Zetec EFI, 6 Cyl 3.0L DOHC EFI Modular | 4AT CD4E, 5-Speed Manual Transmission, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)
View related parts
Ford Escape Oxygen Sensor
Part Number: YL8Z-9G444-AC
$60.22 MSRP: $97.55
You Save: $37.33 (39%)
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly; Oxygen Sensor, Sensor
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2004 Ford Escape | 6 Cyl 3.0L DOHC EFI Modular | 4AT CD4E, 5-Speed Manual Transmission, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)
View related parts
Ford Escape Lower Oxygen Sensor
Part Number: 5L8Z-9G444-K
$49.51 MSRP: $83.35
You Save: $33.84 (41%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor - Exhaust Gas - Oxygen; Lower Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2010 Ford Escape | 4 Cyl 2.5L Duratec (110kW/150PS) | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive

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Ford Escape Oxygen Sensor

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Ford Escape Oxygen Sensor Parts Questions & Experts Answers

Lower Oxygen Sensor
BE5Z-9G444-A
Q:
What is the general information about Oxygen Sensor and their role on Ford Escape?
Posted by Somneuk R.
A:
An oxygen sensor functions as a galvanic battery that generates a small voltage output based on the oxygen levels in exhaust gases, providing essential input for the feedback loop with the Powertrain Control Module (PCM) to maintain the ideal air/fuel ratio of 14.7:1 for optimal catalyst performance. Vehicles equipped with On-Board Diagnostics II (OBD-II) utilize two Oxygen Sensor-one before and one after the Catalytic Converter-to assess converter efficiency by comparing oxygen levels in the exhaust gases. Four-cylinder models feature one upstream and one downstream heated oxygen sensor, while V6 models have four heated sensors, with two for each cylinder head and multiple catalysts. All sensors are heated to reduce warm-up time, and care must be taken during servicing to avoid damaging the permanently attached pigtail and electrical connector, as well as to keep contaminants away from the sensor. When replacing an oxygen sensor, it is advisable to warm the engine to ease removal, apply anti-seize compound to the threads if reusing an old sensor, and ensure proper torque during installation. After reconnecting the battery, the PCM must relearn its idle and fuel trim strategy for optimal performance.
Answered by Ford Parts Specialist Sonny / Jan 15, 2026