What precautions and steps are involved in servicing oxygen sensors, including replacement procedures for both upstream and downstream sensors in Toyota Highlander?

Handle oxygen sensors with care as damage to the attached pigtail and electrical connector can render them useless. Avoid contaminants and cleaning solvents. For replacements, 2008 and later models have the air-fuel ratio sensor which is the upstream sensor, and the oxygen sensor, which is the downstream sensor. For four-cylinder models, disconnect the battery cable, locate the sensor in the exhaust manifold, disconnect the connector, and unscrew the sensor using an oxygen sensor socket. For V6 models, disconnect the battery cable, disconnect the sensor connector, raise the vehicle, and unscrew the sensor. Always apply anti-seize compound to the sensor threads during installation and tighten to the specified torque.

Genuine Toyota Highlander Oxygen Sensor

Oxygen O2 Sensor

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59 Oxygen Sensors found

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Toyota Highlander Air Fuel Ratio Oxygen Sensor
Part Number: 89467-48050
$222.71 MSRP: $319.34
You Save: $96.63 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Air Fuel Ratio; Oxygen Sensor
- Manufacturer Note: LH
- Position: Driver Side
- Replaces: 89467-08010
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2007 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA
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Toyota Highlander Air Fuel Ratio Oxygen Sensor
Part Number: 89467-48011
$210.99 MSRP: $302.55
You Save: $91.56 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Air Fuel Ratio; Oxygen Sensor, Sensor
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2004 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA
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Toyota Highlander Oxygen Sensor No.2
Part Number: 89465-48180
$142.49 MSRP: $202.58
You Save: $60.09 (30%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Oxygen No.2; Oxygen Sensor
- Manufacturer Note: RH
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2007 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA
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Toyota Highlander Oxygen Sensor
Part Number: 89465-0E130
$133.72 MSRP: $190.10
You Save: $56.38 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Oxygen; Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2017 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
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Toyota Highlander Air Fuel Ratio Oxygen Sensor
Part Number: 89467-0E040
$239.06 MSRP: $342.80
You Save: $103.74 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Air Fuel Ratio; Oxygen Sensor, Upper Oxygen Sensor
- Replaces: 89467-48130
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2008-2011 Toyota Highlander | Grande, Limited, Medium, STD, Sport | 4 Cyl 2.7L, 6 Cyl 3.3L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFE; ASU40L-ARTNKA, 2GRFXE, 3MZFE; ASU40L-BRTNKA, GSU40L-ARAGKA, GSU40L-ARAMKA, GSU40L-ARANKA, GSU40L-ARASKA, GSU40L-BRAGKA, GSU40L-BRAMKA, GSU40L-BRANKA, GSU40L-BRASKA, GSU45L-ARAGKA, GSU45L-ARAMKA, GSU45L-ARANKA, GSU45L-ARASKA, GSU45L-BRAGKA, GSU45L-BRAMKA, GSU45L-BRANKA, GSU45L-BRASKA, GVU48L-BRXGKA, GVU48L-BRXNKA, MHU48L-BRXMKA, MHU48L-BRXNKA
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Toyota Highlander Oxygen Sensor No.2
Part Number: 89465-0E120
$132.67 MSRP: $188.60
You Save: $55.93 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Oxygen No.2; Oxygen Sensor, Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2017 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
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Toyota Highlander Oxygen Sensor No.2
Part Number: 89465-48170
$151.27 MSRP: $215.06
You Save: $63.79 (30%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor, Oxygen No.2; Oxygen Sensor
- Manufacturer Note: LH
- Position: Driver Side
- Replaces: 89465-08040
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2007 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA
View related parts
Toyota Highlander Oxygen Sensor
Part Number: 89465-0E030
$169.29 MSRP: $240.67
You Save: $71.38 (30%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Sensor, Oxygen; Rear Oxygen Sensor
- Replaces: 89465-48110
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2008-2013 Toyota Highlander | Grande, Limited, Medium, STD, Sport | 4 Cyl 2.7L, 6 Cyl 3.3L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFE; ASU40L-ARTNKA, 2GRFXE, 3MZFE; ASU40L-BRTNKA, GSU40L-ARAGKA, GSU40L-ARAMKA, GSU40L-ARANKA, GSU40L-ARASKA, GSU40L-BRAGKA, GSU40L-BRAMKA, GSU40L-BRANKA, GSU40L-BRASKA, GSU45L-ARAGKA, GSU45L-ARAMKA, GSU45L-ARANKA, GSU45L-ARASKA, GSU45L-BRAGKA, GSU45L-BRAMKA, GSU45L-BRANKA, GSU45L-BRASKA, GVU48L-BRXGKA, GVU48L-BRXNKA, MHU48L-BRXMKA, MHU48L-BRXNKA
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Toyota Highlander Oxygen Sensor
Part Number: 89465-49075
$122.60 MSRP: $174.30
You Save: $51.70 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Oxygen
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2004 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA
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Toyota Highlander Air Fuel Ratio Oxygen Sensor
Part Number: 89467-0E140
$233.73 MSRP: $335.15
You Save: $101.42 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Air Fuel Ratio
- Replaces: 89467-48210
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2010-2017 Toyota Highlander | Grande, Limited, Medium, STD, Sport | 4 Cyl 2.7L, 6 Cyl 3.3L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU40L-ARTNKA, 3MZFE; ASU40L-ARTNKA, ASU40L-BRTNKA, ASU50L-ARTNKA, GSU40L-ARAGKA, GSU40L-ARAMKA, GSU40L-ARANKA, GSU40L-ARASKA, GSU40L-BRAGKA, GSU40L-BRAMKA, GSU40L-BRANKA, GSU40L-BRASKA, GSU45L-ARAGKA, GSU45L-ARAMKA, GSU45L-ARANKA, GSU45L-ARASKA, GSU45L-BRAGKA, GSU45L-BRAMKA, GSU45L-BRANKA, GSU45L-BRASKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU48L-BRXGKA, GVU48L-BRXNKA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA, MHU48L-BRXMKA, MHU48L-BRXNKA
View related parts
Toyota Highlander Air Fuel Ratio Oxygen Sensor
Part Number: 89467-0E080
$199.74 MSRP: $286.41
You Save: $86.67 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Air Fuel Ratio; Front Oxygen Sensor, Oxygen Sensor
- Replaces: 89467-48180
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2008-2013 Toyota Highlander | Grande, Limited, Medium, STD, Sport | 4 Cyl 2.7L, 6 Cyl 3.3L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFE; ASU40L-ARTNKA, 2GRFXE, 3MZFE; ASU40L-BRTNKA, GSU40L-ARAGKA, GSU40L-ARAMKA, GSU40L-ARANKA, GSU40L-ARASKA, GSU40L-BRAGKA, GSU40L-BRAMKA, GSU40L-BRANKA, GSU40L-BRASKA, GSU45L-ARAGKA, GSU45L-ARAMKA, GSU45L-ARANKA, GSU45L-ARASKA, GSU45L-BRAGKA, GSU45L-BRAMKA, GSU45L-BRANKA, GSU45L-BRASKA, GVU48L-BRXGKA, GVU48L-BRXNKA, MHU48L-BRXMKA, MHU48L-BRXNKA
View related parts
Toyota Highlander Oxygen Sensor No.2
Part Number: 89465-0E210
$160.75 MSRP: $228.53
You Save: $67.78 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Oxygen No.2
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2016-2019 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
View related parts
Toyota Highlander Air Fuel Ratio Oxygen Sensor, No.2
Part Number: 89467-0E240
$200.67 MSRP: $287.74
You Save: $87.07 (31%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Air Fuel Ratio, No.2
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2016-2019 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
View related parts
Toyota Highlander Oxygen Sensor
Part Number: 89465-0E080
$117.46 MSRP: $166.99
You Save: $49.53 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Oxygen; Rear Oxygen Sensor
- Replaces: 89465-48250
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2008-2013 Toyota Highlander | Grande, Limited, Medium, STD, Sport | 4 Cyl 2.7L, 6 Cyl 3.3L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFE; ASU40L-ARTNKA, 2GRFXE, 3MZFE; ASU40L-BRTNKA, GSU40L-ARAGKA, GSU40L-ARAMKA, GSU40L-ARANKA, GSU40L-ARASKA, GSU40L-BRAGKA, GSU40L-BRAMKA, GSU40L-BRANKA, GSU40L-BRASKA, GSU45L-ARAGKA, GSU45L-ARAMKA, GSU45L-ARANKA, GSU45L-ARASKA, GSU45L-BRAGKA, GSU45L-BRAMKA, GSU45L-BRANKA, GSU45L-BRASKA, GVU48L-BRXGKA, GVU48L-BRXNKA, MHU48L-BRXMKA, MHU48L-BRXNKA
View related parts
Toyota Highlander Oxygen Sensor
Part Number: 89465-48110
$169.29 MSRP: $240.67
You Save: $71.38 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Oxygen
- Replaced by: 89465-0E030
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2008-2011 Toyota Highlander | Grande, Limited, Sport, STD | 4 Cyl 2.7L, 6 Cyl 3.3L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFXE, 3MZFE; ASU40L-BRTNKA, GSU40L-BRAGKA, GSU40L-BRAMKA, GSU40L-BRANKA, GSU40L-BRASKA, GSU45L-BRAGKA, GSU45L-BRAMKA, GSU45L-BRANKA, GSU45L-BRASKA, GVU48L-BRXGKA, GVU48L-BRXNKA, MHU48L-BRXMKA, MHU48L-BRXNKA
View related parts
Toyota Highlander Air Fuel Ratio Oxygen Sensor
Part Number: 89467-0R100
$169.87 MSRP: $241.51
You Save: $71.64 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Air Fuel Rat
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2020-2024 Toyota Highlander | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.5L | 2GRFKS, A25AFXS, T24AFTS; AXUH70L-ARXGHA, AXUH70L-ARXMHA, AXUH70L-ARXNHA, AXUH78L-ARXGHA, AXUH78L-ARXMHA, AXUH78L-ARXNHA, GSU70L-ARZGHA, GSU70L-ARZMHA, GSU70L-ARZNHA, GSU70L-ARZSHA, GSU75L-ARZGHA, GSU75L-ARZMHA, GSU75L-ARZNHA, GSU75L-ARZSHA, TXUA70L-ARZGTA, TXUA70L-ARZMTA, TXUA70L-ARZNTA, TXUA70L-ARZSTA, TXUA75L-ARZGTA, TXUA75L-ARZMTA, TXUA75L-ARZNTA, TXUA75L-ARZSTA
View related parts
Toyota Highlander Air Fuel Ratio Oxygen Sensor
Part Number: 89467-0E190
$206.24 MSRP: $295.73
You Save: $89.49 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Air Fuel Ratio
- Manufacturer Note: LH
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2017 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
View related parts
Toyota Highlander Air Fuel Ratio Oxygen Sensor
Part Number: 89467-0E200
$181.76 MSRP: $260.63
You Save: $78.87 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Air Fuel Ratio
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2017 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
View related parts
Toyota Highlander Air Fuel Ratio Oxygen Sensor
Part Number: 89467-0E250
$200.67 MSRP: $287.74
You Save: $87.07 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Air Fuel Ratio
- Manufacturer Note: RH BANK
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2016-2019 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
View related parts
Toyota Highlander Air Fuel Ratio Oxygen Sensor, No.2
Part Number: 89467-48200
$197.88 MSRP: $283.75
You Save: $85.87 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Air Fuel Ratio, No.2; Front Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2010-2013 Toyota Highlander | Limited, Medium, Sport, STD | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE; ASU40L-ARTNKA, GSU40L-ARAGKA, GSU40L-ARAMKA, GSU40L-ARANKA, GSU40L-ARASKA, GSU45L-ARAGKA, GSU45L-ARAMKA, GSU45L-ARANKA, GSU45L-ARASKA

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Toyota Highlander Oxygen Sensor

In Toyota Highlander, one of the most important components mainly used for monitoring and regulating the air fuel mixture contained in the engine exhaust is the Oxygen Sensor. Analyzing the amount of unused oxygen and the standard atmospheric level the sensor produces a voltage level that helps the engine control computer to modify the mixture through the fuel injector's pulse width. Generally, Toyota Highlander possess not less than two oxygen sensors; the pre-cat and post-cat ones while the pre-cat is considered as the most essential one due to its ability to provide feedback. These sensors work efficiently at high temperatures but, over time, they can be contaminated and cause higher emission and poor fuel economy. Some of the modern cars may incorporate the air-fuel ration sensors if the their values are to be measured and controlled for improved fuel delivery.

If you are in demand for superior quality and affordable OEM Toyota Highlander Oxygen Sensor, then shop with us! We own a wide range of the reduced-priced genuine Toyota Highlander Oxygen Sensor. You can purchase in confidence as all parts come with a manufacturer's warranty. Any issues with our products? No need to worry as we have a hassle-free return policy to guide you every step of the way.

Toyota Highlander Oxygen Sensor Parts Questions & Experts Answers

Oxygen Sensor No.2
89465-0E020
Q: What precautions and steps are involved in servicing oxygen sensors, including replacement procedures for both upstream and downstream sensors in Toyota Highlander?
A:
Handle oxygen sensors with care as damage to the attached pigtail and electrical connector can render them useless. Avoid contaminants and cleaning solvents. For replacements, 2008 and later models have the air-fuel ratio sensor which is the upstream sensor, and the oxygen sensor, which is the downstream sensor. For four-cylinder models, disconnect the battery cable, locate the sensor in the exhaust manifold, disconnect the connector, and unscrew the sensor using an oxygen sensor socket. For V6 models, disconnect the battery cable, disconnect the sensor connector, raise the vehicle, and unscrew the sensor. Always apply anti-seize compound to the sensor threads during installation and tighten to the specified torque.