Oxygen Sensors

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Car exhaust flows have oxygen sensors that detect how much unburned oxygen your engine emits. This sensor then sends voltage to your engine control unit to determine if the air-fuel mixture in your engine is too lean or rich. SubaruOnlineParts offers a quality selection of exhaust sensors for select Subaru vehicles.

Enjoy Optimal Engine Performance with Top-Quality O2 Sensors

Oxygen sensors monitor how much oxygen your exhaust stream has, and ensure that your catalytic converters are working through oxygen level checks. Exhaust sensors oxidize some oxygen as it passes through the exhaust. These auto parts then turn this reading into a voltage signal and transmit it back to your engine control unit (ECU). Once your ECU detects that the air-fuel mixture is too rich or lean, the unit will increase or decrease the amount of fuel to achieve the optimal A/F ratio.

O2 sensors can either be binary or universal sensors. Binary sensors compare the excess oxygen in your exhaust with ambient air oxygen levels. They determine when a rich air-fuel mixture gets lean and vice versa. Universal exhaust sensors have a greater measuring range than binary sensors and are compatible with both diesel and gasoline engines.

Find the Best Oxygen Sensor for Your Subaru Online

Oxygen sensors are extremely durable, but can still fail over time. Contaminated fuel, carbon deposits from an engine burning oil, and external pollutants can cause these sensors to fail. The fuel economy and overall performance of your car will also falter should your O2 sensor start to malfunction. Replace these parts whenever necessary and maintain an efficient gas mileage for your Subaru.

SubaruOnlineParts carries genuine exhaust sensors in its online catalog. These top-quality auto parts are compatible with select Subaru models. All of our sensor replacements are 100% genuine, brand new, easy to install, and sold for less than the manufacturer’s suggested retail price. Browse our website today to get the best O2 sensor at discounted rates for your car.

Oxygen Sensor
Part Number: 22641AA260
Options: Front
Other Names: Sensor, Sensor Ay Air Fuel Ratio More Names
Description: 2.5L turbo, air, fuel ratio. Baja. With turbo. Front. More Info
Notes: Order By Description. More Notes
MSRP $273.25
$196.74
MSRP $273.25
$196.74
Oxygen Sensor
Part Number: 22690AA180
Options: Left Front, Right Front
Description: Front. SVX. More Info
Notes: Order By Description. More Notes
MSRP $181.95
$131.00
MSRP $181.95
$131.00
Oxygen Sensor
Part Number: 22690AA220
Options: Rear
Other Names: Ft Oxygen Sensor More Names
Description: Rear. Impreza. 2.2l. Legacy. Impreza. 1.8l. More Info
Notes: Order By Description. More Notes
MSRP $162.35
$116.89
MSRP $162.35
$116.89
Oxygen Sensor
Part Number: 22690AA56A
Other Names: Sen Assembly Oxygen More Names
Description: 2.5L, without california. More Info
MSRP $164.03
$118.10
MSRP $164.03
$118.10
Oxygen Sensor
Part Number: 22690AA70A
Options: Rear
Other Names: Sen Ay Oxygen More Names
Description: Legacy/Outback. Rear. 2.5l. With turbo. 2.5L turbo, auto trans. More Info
Notes: Order By Description. More Notes
MSRP $162.35
$116.89
MSRP $162.35
$116.89
Oxygen Sensor
Part Number: 22690AA73A
Options: Rear, Front
Other Names: Sen Assembly Oxygen More Names
Replaces: 22690AA43A
Description: Rear. w/o CLIP. w/ CLIP.\ \ Fits Baja, Legacy\ \ Oxygen Sensor\ A failed Oxygen Sensor will often have no noticeable symptoms beyond a... More Info
Notes: Order By Description. More Notes
MSRP $162.35
$116.89
MSRP $162.35
$116.89
Oxygen Sensor
Part Number: 22690AA96A
Options: Rear
Other Names: Sensor Assembly Oxygen More Names
Description: The oxygen sensor (22690AA96A) is an essential part of your vehicle that measures the amount of oxygen in your exhaust gases. These O2... More Info
MSRP $155.58
$112.02
MSRP $155.58
$112.02
Oxygen Sensor
Part Number: 22690AB02A
Options: Right Rear, Left
Other Names: Sensor Ay Oxygen More Names
Description: Legacy, Outback. Rear. 3.6l. Left. More Info
MSRP $184.95
$133.16
MSRP $184.95
$133.16
Oxygen Sensor
Part Number: 22690AB06A
Options: Left Rear, Right
Other Names: Sensor Ay Oxygen More Names
Description: Legacy, Outback. Rear. 3.6l. Right. More Info
MSRP $190.95
$137.48
MSRP $190.95
$137.48
Oxygen Sensor
Part Number: 22641AA000
Options: Front
Description: Air-Fuel Ratio Sensor. Calif. More Info
MSRP $233.40
$168.05
MSRP $233.40
$168.05
Oxygen Sensor
Part Number: 22641AA00A
Options: Front
Description: Sensor Air/Fuel Ratio.\ Front U1.\ \ Fits Legacy\ \ Oxygen Sensor\ A failed Oxygen Sensor will often have no noticeable symptoms beyond... More Info
MSRP $192.80
$138.82
MSRP $192.80
$138.82
Oxygen Sensor
Part Number: 22690AA000
Replaces: 469797100, 469797110
Description: 1600 & 1800. More Info
MSRP $182.65
$131.51
MSRP $182.65
$131.51
Oxygen Sensor
Part Number: 22690AA190
Replaces: 22690AA170
Description: Impreza. 1.8l. More Info
Notes: Order By Description. More Notes
MSRP $192.80
$138.82
MSRP $192.80
$138.82
Oxygen Sensor
Part Number: 22690AA330
Options: Rear
Description: Rear. SVX. More Info
Notes: Order By Description. More Notes
MSRP $192.80
$138.82
MSRP $192.80
$138.82
Oxygen Sensor
Part Number: 22690AA38A
Options: Rear Front, Rear
Description: Legacy. 2.5L, rear, manual trans. Outback. Front. 2.5l. Calif. More Info
Notes: Order By Description. More Notes
MSRP $162.35
$116.89
MSRP $162.35
$116.89
Sensor Ay Oxygen
Part Number: 22690AA501
Other Names: Sensor Ay Oxygen More Names
Replaces: 22690AA500
Description: Impreza. 2.0l. Manual trans. More Info
Notes: Order By Description. More Notes
MSRP $245.95
$177.08
MSRP $245.95
$177.08
Oxygen Sensor
Part Number: 22690AA740
Options: Rear
Other Names: Sen Assembly Oxygen More Names
Replaces: 22690AA310
Description: Forester. Rear. Impreza. 2.2l. No.1. 2.5L, #1. Impreza. 2.5l. More Info
Notes: Order By Description. More Notes
MSRP $202.45
$145.76
MSRP $202.45
$145.76
Oxygen Sensor
Part Number: 22690AA85A
Options: Rear
Other Names: Sen Assembly Oxygen More Names
Description: Legacy/Outback. Rear. 2.5l. With turbo. Manual trans. 6 speed. More Info
Notes: Order By Description. More Notes
MSRP $162.35
$116.89
MSRP $162.35
$116.89
Sensor Ay A F Ratio
Part Number: 22791AA00A
Options: Front
Other Names: Sensor, PT260704 F Oxygen (A F) S More Names
Replaces: 22641AA011, 22641AA012, 22641AA01A, 22641AA01B
Description: 2.5L sohc, #2. Forester. 2.5L, front, auto trans. 2.5L, front, all. 2.5L without turbo, 2002-04, air/fuel ratio. Air-Fuel Ratio Sensor. More Info
Notes: Order By Description. More Notes
MSRP $144.08
$103.74
MSRP $144.08
$103.74
Oxygen Sensor
Part Number: 22641AA13B
Options: Front
Other Names: Sen Ay A F Ratio More Names
Description: Air-Fuel Ratio Sensor. More Info
MSRP $192.80
$138.82
MSRP $192.80
$138.82
Oxygen Sensor
Part Number: 22641AA32A
Options: Front
Other Names: Sen Ay A F Ratio More Names
Description: Legacy/Outback. Front. 2.5l. With turbo. Air-Fuel Ratio Sensor. More Info
Notes: Order By Description. More Notes
MSRP $193.82
$139.55
MSRP $193.82
$139.55
Oxygen Sensor
Part Number: 22641AA610
Options: Front
Other Names: Ft Oxygen Sensor, Air\/Fuel Sensor, Sen Ay A F Ratio More Names
Description: Impreza. Without turbo. Forester. XV Crosstrek. Without hybrid. Front. More Info
MSRP $273.25
$196.74
MSRP $273.25
$196.74
Oxygen Sensor
Part Number: 22641AA710
Options: Front
Other Names: Sensor Ay A F Ratio More Names
Description: Air-Fuel Ratio Sensor. More Info
MSRP $290.95
$209.48
MSRP $290.95
$209.48
Oxygen Sensor
Part Number: 22690AA350
Options: Front
Other Names: Ft Oxygen Sensor More Names
Description: No.2. Impreza. 2.2l. Front. 2.5L dohc, #2. Forester. More Info
Notes: Order By Description. More Notes
MSRP $162.35
$116.89
MSRP $162.35
$116.89
Oxygen Sensor
Part Number: 22690AA45C
Options: Rear, Rear Front
Other Names: Sen Assembly Oxygen More Names
Description: 3.0L, rear. Front. 3.0l. Legacy/Outback. Rear. 2.5l. Without turbo. More Info
Notes: Order By Description. More Notes
MSRP $164.03
$118.10
MSRP $164.03
$118.10
Oxygen Sensor
Part Number: 22690AA560
Options: Rear
Other Names: Rear Oxygen Sensor, Sensor Ay Oxygen More Names
Description: Impreza. 2.5l. No.1. Forester. Rear. 2.5L, 2005-08. 2.5L without turbo, 2005-07. More Info
Notes: Order By Description. More Notes
MSRP $202.27
$145.63
MSRP $202.27
$145.63
Sensor Ay Oxygen
Part Number: 22690AA640
Options: Rear
Other Names: Rear Oxygen Sensor, Sensor Ay Oxygen More Names
Replaces: 22690AA420, 22690AA540
Description: Forester. 2.5L without turbo, 2002-04. Impreza. 2.5l. No.1. 2.5L, 2003-04. 2.5L, #1. Impreza. 2.2l. Rear. 2.2L, without Outback.... More Info
Notes: Order By Description. More Notes
MSRP $239.95
$172.76
MSRP $239.95
$172.76
Oxygen Sensor
Part Number: 22690AA68A
Options: Left Rear, Right Rear
Other Names: Sen Ay Oxygen More Names
Description: Tribeca. Rear. 3.6l. Legacy/Outback. 3.0L. More Info
Notes: Order By Description. More Notes
MSRP $152.20
$109.58
MSRP $152.20
$109.58
Oxygen Sensor
Part Number: 22690AA810
Options: Rear
Other Names: Rear Oxygen Sensor, Sensor Ay Oxygen More Names
Description: Rear. 2.5L without turbo, 2009-10. 2.5i & Outback sport. Forester. 2.5L, 2005-08. 2.5L without turbo, 2005-07. Impreza. 2.5l. More Info
Notes: Order By Description. More Notes
MSRP $183.75
$132.30
MSRP $183.75
$132.30
Oxygen Sensor
Part Number: 22690AA900
Options: Rear, Front
Other Names: Rear Oxygen Sensor, Ft Oxygen Sensor, Sensor Ay Oxygen More Names
Description: Forester. Rear. Impreza. 25gt & WRX. 2.5L with turbo, 2013. Without sti model. Front. More Info
Notes: Order By Description. More Notes
MSRP $199.95
$143.96
MSRP $199.95
$143.96
Oxygen Sensor
Part Number: 22690AA93A
Options: Rear
Other Names: Sen Assembly Oxygen More Names
Description: Legacy. Without turbo. Outback. Rear. 2.5l. More Info
MSRP $143.07
$103.01
MSRP $143.07
$103.01
Oxygen Sensor
Part Number: 22690AA960
Options: Rear
Other Names: Ft Oxygen Sensor, Rear Oxygen Sensor, Sen Ay Oxygen More Names
Description: Forester. 2.5L without turbo, 2011-13. Impreza. XV Crosstrek. Rear. With hybrid. More Info
MSRP $165.73
$119.33
MSRP $165.73
$119.33
Sensor Ay Oxygen
Part Number: 22690AB08A
Options: Rear
Other Names: Oxygen Sensor Assembly More Names
Replaces: 22690AB070
Description: Impreza. Rear. Crosstrek. 2.5L. Forester. More Info
MSRP $184.95
$133.16
MSRP $184.95
$133.16
Oxygen Sensor
Part Number: 22641AA03C
Options: Front
Other Names: Sen Ay A F Ratio More Names
Description: 3.0L, front. Air-Fuel Ratio Sensor. More Info
MSRP $193.82
$139.55
MSRP $193.82
$139.55
Oxygen Sensor
Part Number: 22641AA510
Options: Front
Other Names: Sensor, Sensor Ay Air Fuel Ratio More Names
Description: Sti, air/fuel ratio. Impreza. Front. With turbo. With sti model. More Info
MSRP $263.95
$190.04
MSRP $263.95
$190.04
Oxygen Sensor
Part Number: 22690AA150
Other Names: P1230993 Oxygen Sensor More Names
Description: Legacy. Without turbo. More Info
MSRP $162.35
$116.89
MSRP $162.35
$116.89
Oxygen Sensor
Part Number: 22690AA161
Replaces: 22690AA160
Description: With turbo. Legacy. More Info
MSRP $182.65
$131.51
MSRP $182.65
$131.51
Oxygen Sensor
Part Number: 22690AA290
Options: Front
Description: Front. Legacy. More Info
Notes: Order By Description. More Notes
MSRP $162.35
$116.89
MSRP $162.35
$116.89
Sensor Ay Oxygen
Part Number: 22690AA491
Options: Rear
Other Names: Rear Oxygen Sensor, Sensor Ay Oxygen More Names
Replaces: 22690AA490
Description: Impreza. 2.5l. Rear. Forester. Impreza. 2.0l. 2.0L, 2002-03, auto trans. 2.0L, 2004-05, auto trans. Baja. 2.5L turbo, 2004, auto trans. More Info
Notes: Order By Description. More Notes
MSRP $245.95
$177.08
MSRP $245.95
$177.08
Oxygen Sensor
Part Number: 22690AA520
Options: Rear
Other Names: Rear Oxygen Sensor, Sensor Ay Oxygen More Names
Description: Impreza. 2.5l. Rear. Forester. 2.5L turbo, with sti. Impreza. 2.0l. 2.0L, 2004-05, manual trans. Baja. 2.0L, 2002-03, manual trans. 2.5L... More Info
Notes: Order By Description. More Notes
MSRP $245.95
$177.08
MSRP $245.95
$177.08
Oxygen Sensor
Part Number: 22690AA53B
Options: Front
Other Names: Sen Assembly Oxygen More Names
Description: All. Front. 2.5l. Auto trans. Baja. Without turbo. Legacy/Outback. More Info
Notes: Order By Description. More Notes
MSRP $162.35
$116.89
MSRP $162.35
$116.89
Oxygen Sensor
Part Number: 22690AA69A
Options: Rear, Front
Other Names: Sen Ay Oxygen More Names
Description: Fits Legacy, Outback\ \ Oxygen Sensor\ A failed Oxygen Sensor will often have no noticeable symptoms beyond a check engine light, but it... More Info
Notes: Order By Description. More Notes
MSRP $162.35
$116.89
MSRP $162.35
$116.89
Oxygen Sensor
Part Number: 22690AA81A
Options: Rear
Other Names: Sen Ay Oxygen More Names
Description: Legacy/Outback. Rear. 2.5l. 2.5L without turbo. 2.5L, all. More Info
Notes: Order By Description. More Notes
MSRP $163.37
$117.62
MSRP $163.37
$117.62
Oxygen Sensor
Part Number: 22690AA850
Options: Rear
Other Names: Sensor Ay Oxygen More Names
Description: 2.5L. Impreza. Rear. With turbo. With sti model. More Info
MSRP $172.50
$124.20
MSRP $172.50
$124.20
Oxygen Sensor
Part Number: 22690AA91A
Options: Rear
Other Names: Sen Assembly Oxygen More Names
Description: Fits Legacy\ \ Oxygen Sensor\ A failed Oxygen Sensor will often have no noticeable symptoms beyond a check engine light, but it does... More Info
MSRP $142.05
$102.28
MSRP $142.05
$102.28
Oxygen Sensor
Part Number: 22690AB000
Options: Rear Lower
Other Names: Sen Ay Oxygen More Names
Description: BRZ. Lower. More Info
MSRP $199.95
$143.96
MSRP $199.95
$143.96
Oxygen Sensor
Part Number: 22690AB010
Options: Rear
Other Names: Rear Oxygen Sensor, Sensor Assembly Oxygen More Names
Description: Fits Forester, WRX\ \ Oxygen Sensor\ A failed Oxygen Sensor will often have no noticeable symptoms beyond a check engine light, but it... More Info
MSRP $187.50
$135.00
MSRP $187.50
$135.00
Oxygen Sensor
Part Number: 22690AB09A
Other Names: Sen Assembly Oxygen More Names
Description: 2.4L turbo. Acsent. More Info
MSRP $206.33
$148.56
MSRP $206.33
$148.56
Ft Oxygen Sensor
Part Number: 22641AA650
Options: Front
Other Names: Air\/Fuel Sensor, Oxygen Sensor, Sensor Assembly Air Fuel Rati More Names
Description: 2.0L. WRX. Impreza. Front. Forester. With turbo. More Info
MSRP $265.25
$190.98
MSRP $265.25
$190.98
Oxygen Sensor Connector
Part Number: 24039AA27C
Other Names: Sensor Harness, Harness Sen More Names
Description: 2.5L, with california. More Info
MSRP $66.47
$47.86
MSRP $66.47
$47.86

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