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: 22641AA000
Positions: Front
Description: Calif. Air-Fuel Ratio Sensor. More Info
Fits:
  • Subaru:
    • Impreza
MSRP $233.40
$162.45
MSRP $233.40
$162.45
Oxygen Sensor
Part Number: 22641AA00A
Positions: Front
Description: Calif. Air-Fuel Ratio Sensor. 2.5L, front, manual trans. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $192.80
$134.19
MSRP $192.80
$134.19
Oxygen Sensor
Part Number: 22690AA000
Replaces: 469797100, 469797110
Description: 1600 & 1800. More Info
Fits:
  • Subaru:
    • Brat,
    • DL,
    • GL,
    • GL-10,
    • RX,
    • Standard,
    • XT
  • 2 more
MSRP $182.65
$127.12
MSRP $182.65
$127.12
Oxygen Sensor
Part Number: 22690AA190
Replaces: 22690AA170
Description: Impreza. 1.8l. More Info
Fits:
  • Subaru:
    • Impreza
MSRP $192.80
$134.19
MSRP $192.80
$134.19
Oxygen Sensor
Part Number: 22690AA330
Positions: Rear
Description: SVX. Rear. More Info
Fits:
  • Subaru:
    • SVX
MSRP $192.80
$134.19
MSRP $192.80
$134.19
Oxygen Sensor
Part Number: 22690AA38A
Positions: Rear Front, Rear
Description: Calif. Legacy. Outback. Front. 2.5l. 2.5L, rear, manual trans. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $162.35
$113.00
MSRP $162.35
$113.00
Oxygen Sensor
Part Number: 22690AA501
Other Names: Sensor Ay Oxygen More Names
Replaces: 22690AA500
Description: Impreza. 2.0l. 2.0L, 2002-03, manual trans. More Info
Fits:
  • Subaru:
    • Impreza
MSRP $197.93
$137.76
MSRP $197.93
$137.76
Oxygen Sensor
Part Number: 22690AA740
Positions: Rear
Other Names: Sen Assembly-Oxygen More Names
Replaces: 22690AA310
Description: Rear. No.1. Forester. 2.5L dohc, #1. Impreza. 2.2l. Impreza. 2.5l. More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza
MSRP $202.45
$140.91
MSRP $202.45
$140.91
Oxygen Sensor
Part Number: 22690AA85A
Positions: Rear
Other Names: Sen Assembly-Oxygen More Names
Description: Rear. 2.5l. Legacy/Outback. 2.5L with turbo, manual trans, 6 speed. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $162.35
$113.00
MSRP $162.35
$113.00
Oxygen Sensor
Part Number: 22791AA00A
Positions: Front
Other Names: Sensor, PT260704 F Oxygen (A F) S More Names
Replaces: 22641AA011, 22641AA012, 22641AA01A, 22641AA01B
Description: Forester. 2.5L sohc, #2. 2.5L, front, all. 2.5L, front, auto trans. Air-Fuel Ratio Sensor. 2.5L without turbo, 2002-04, air/fuel ratio. More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • Legacy,
    • Outback
MSRP $144.08
$100.28
MSRP $144.08
$100.28
Oxygen Sensor
Part Number: 22641AA260
Positions: Front
Other Names: Sensor, Sensor Ay Air Fuel Ratio More Names
Description: Baja. Front. With turbo. 2.5L turbo, air, fuel ratio. More Info
Fits:
  • Subaru:
    • Baja
MSRP $223.25
$155.38
MSRP $223.25
$155.38
Oxygen Sensor
Part Number: 22690AA180
Positions: Left Front, Right Front
Description: SVX. Front. More Info
Fits:
  • Subaru:
    • SVX
MSRP $162.35
$113.00
MSRP $162.35
$113.00
Oxygen Sensor
Part Number: 22690AA220
Positions: Rear
Other Names: Ft Oxygen Sensor More Names
Description: Rear. Legacy. Impreza. 2.2l. Impreza. 1.8l. More Info
Fits:
  • Subaru:
    • Impreza,
    • Legacy
MSRP $162.35
$113.00
MSRP $162.35
$113.00
Oxygen Sensor
Part Number: 22690AA56A
Other Names: Sen Assembly-Oxygen More Names
Description: 2.5L, without california. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $164.03
$114.17
MSRP $164.03
$114.17
Oxygen Sensor
Part Number: 22690AA70A
Positions: Rear
Other Names: Sen Ay-Oxygen More Names
Description: Rear. 2.5l. Legacy/Outback. 2.5L with turbo, auto trans. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $162.35
$113.00
MSRP $162.35
$113.00
Oxygen Sensor
Part Number: 22690AA73A
Positions: Rear, Front
Other Names: Sen Assembly Oxygen More Names
Replaces: 22690AA43A
Description: Baja. Legacy. Outback. 2.5L, 2003. Front. 2.5l. 2.5L, 2004-06. 2.5L, rear, all. Without turbo. 2.5L, rear, auto trans. More Info
Fits:
  • Subaru:
    • Baja,
    • Legacy,
    • Outback
MSRP $162.35
$113.00
MSRP $162.35
$113.00
Oxygen Sensor
Part Number: 22690AA96A
Positions: Rear
Other Names: Sensor Assembly Oxygen More Names
Description: Rear. 2.5l. Legacy, Outback. 2.5L without turbo, 2013-14. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $155.58
$108.29
MSRP $155.58
$108.29
Oxygen Sensor
Part Number: 22690AB02A
Positions: Right Rear, Left
Other Names: Sensor Ay Oxygen More Names
Description: Left. Rear. 3.6l. Legacy, Outback. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $184.95
$128.73
MSRP $184.95
$128.73
Oxygen Sensor
Part Number: 22690AB06A
Positions: Left Rear, Right
Other Names: Sensor Ay Oxygen More Names
Description: Right. Rear. 3.6l. Legacy, Outback. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $152.20
$105.93
MSRP $152.20
$105.93
Oxygen Sensor
Part Number: 22641AA13B
Positions: Front
Other Names: Sen Ay-A F Ratio More Names
Description: Air-Fuel Ratio Sensor. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $192.80
$134.19
MSRP $192.80
$134.19
Oxygen Sensor
Part Number: 22641AA32A
Positions: Front
Other Names: Sen Ay-A F Ratio More Names
Description: With turbo. Front. 2.5l. Legacy/Outback. Air-Fuel Ratio Sensor. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $193.82
$134.90
MSRP $193.82
$134.90
Oxygen Sensor
Part Number: 22641AA610
Positions: Front
Other Names: Ft Oxygen Sensor, Air/Fuel Sensor, Sen Ay A F Ratio More Names
Description: Front. Impreza. Forester. XV Crosstrek. Without hybrid. 2.5L without turbo, 2011-13. More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • XV Crosstrek
MSRP $250.00
$174.00
MSRP $250.00
$174.00
Oxygen Sensor
Part Number: 22641AA710
Positions: Front
Other Names: Sensor Ay A F Ratio More Names
Description: Air-Fuel Ratio Sensor. More Info
Fits:
  • Subaru:
    • Forester
MSRP $258.75
$180.09
MSRP $258.75
$180.09
Oxygen Sensor
Part Number: 22690AA350
Positions: Front
Other Names: Ft Oxygen Sensor More Names
Description: No.2. Front. Forester. 2.5L dohc, #2. Impreza. 2.5l. Impreza. 2.2l. More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza
MSRP $162.35
$113.00
MSRP $162.35
$113.00
Oxygen Sensor
Part Number: 22690AA45C
Positions: Rear, Rear Front
Other Names: Sen Assembly-Oxygen More Names
Description: 3.0L, rear. Front. 3.0l. Without turbo. Legacy/Outback. 2.5L, with california, rear. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $164.03
$114.17
MSRP $164.03
$114.17
Oxygen Sensor
Part Number: 22690AA560
Positions: Rear
Other Names: Rear Oxygen Sensor, Sensor Ay Oxygen More Names
Description: No.1. Rear. Forester. Impreza. 2.5l. 2.5L, 2005-08. 2.5L without turbo, 2005-07. More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza
MSRP $202.27
$140.78
MSRP $202.27
$140.78
Oxygen Sensor
Part Number: 22690AA640
Positions: Rear
Other Names: Rear Oxygen Sensor, Sensor Ay Oxygen More Names
Replaces: 22690AA420, 22690AA540
Description: No.1. Rear. Forester. Exc.Calif. 2.5L sohc, #1. Impreza. 2.5l. 2.5L, 2003-04. Impreza. 2.2l. 2.2L, without Outback. 2.5L without turbo,... More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza
MSRP $214.00
$148.94
MSRP $214.00
$148.94
Oxygen Sensor
Part Number: 22690AA68A
Positions: Left Rear, Right Rear
Other Names: Sen Ay-Oxygen More Names
Description: Tribeca. Rear. 3.6l. Rear. 3.0l. Legacy/Outback. More Info
Fits:
  • Subaru:
    • B9 Tribeca,
    • Legacy,
    • Outback,
    • Tribeca
MSRP $152.20
$105.93
MSRP $152.20
$105.93
Oxygen Sensor
Part Number: 22690AA810
Positions: Rear
Other Names: Rear Oxygen Sensor, Sensor Ay Oxygen More Names
Description: Rear. Forester. 2.5L, 2005-08. Impreza. 2.5l. 2.5i & Outback sport. 2.5L without turbo, 2009-10. 2.5L without turbo, 2005-07. More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza
MSRP $173.40
$120.69
MSRP $173.40
$120.69
Oxygen Sensor
Part Number: 22690AA900
Positions: Rear, Front
Other Names: Rear Oxygen Sensor, Ft Oxygen Sensor, Sensor Ay Oxygen More Names
Description: Rear. Front. Impreza. Forester. 25gt & WRX. Without sti model. 2.5L with turbo, 2013. 2.5L with turbo, 2009-12. More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza
MSRP $172.50
$120.06
MSRP $172.50
$120.06
Oxygen Sensor
Part Number: 22690AA93A
Positions: Rear
Other Names: Sen Assembly-Oxygen More Names
Description: Legacy. Outback. Rear. 2.5l. 2.5L without turbo, 2010-12. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $143.07
$99.57
MSRP $143.07
$99.57
Oxygen Sensor
Part Number: 22690AA960
Positions: Rear
Other Names: Ft Oxygen Sensor, Rear Oxygen Sensor, Sen Ay Oxygen More Names
Description: Rear. Impreza. Forester. XV Crosstrek. Without hybrid. 2.5L without turbo, 2011-13. More Info
Fits:
  • Subaru:
    • Crosstrek,
    • Forester,
    • Impreza,
    • XV Crosstrek
MSRP $165.73
$115.35
MSRP $165.73
$115.35
Oxygen Sensor
Part Number: 22690AB08A
Positions: Rear
Other Names: Oxygen Sensor Assembly More Names
Replaces: 22690AB070
Description: Rear. 2.5L. Impreza. Forester. Crosstrek. More Info
Fits:
  • Subaru:
    • Crosstrek,
    • Forester,
    • Impreza,
    • Legacy,
    • Outback
MSRP $180.95
$125.94
MSRP $180.95
$125.94
Oxygen Sensor
Part Number: 22641AA03C
Positions: Front
Other Names: Sen Ay-A F Ratio More Names
Description: 3.0L, front. Air-Fuel Ratio Sensor. More Info
Fits:
  • Subaru:
    • Outback
MSRP $193.82
$134.90
MSRP $193.82
$134.90
Oxygen Sensor
Part Number: 22641AA510
Positions: Front
Other Names: Sensor, Sensor Ay Air Fuel Ratio More Names
Description: Front. Impreza. With turbo. With sti model. Sti, air/fuel ratio. More Info
Fits:
  • Subaru:
    • Impreza
MSRP $206.00
$143.38
MSRP $206.00
$143.38
Oxygen Sensor
Part Number: 22690AA150
Other Names: P1230993 Oxygen Sensor More Names
Description: Legacy. Without turbo, from 7/89. More Info
Fits:
  • Subaru:
    • Legacy
MSRP $162.35
$113.00
MSRP $162.35
$113.00
Oxygen Sensor
Part Number: 22690AA161
Replaces: 22690AA160
Description: Legacy. With turbo. More Info
Fits:
  • Subaru:
    • Legacy
MSRP $182.65
$127.12
MSRP $182.65
$127.12
Oxygen Sensor
Part Number: 22690AA290
Positions: Front
Description: Front. Legacy. More Info
Fits:
  • Subaru:
    • Legacy
MSRP $162.35
$113.00
MSRP $162.35
$113.00
Oxygen Sensor
Part Number: 22690AA380
Positions: Rear
Other Names: Rear Oxygen Sensor More Names
Description: Rear. Calif. Impreza. 2.2l. 2.2L, with Outback. More Info
Fits:
  • Subaru:
    • Impreza
MSRP $192.80
$134.19
MSRP $192.80
$134.19
Oxygen Sensor
Part Number: 22690AA491
Positions: Rear
Other Names: Rear Oxygen Sensor, Sensor Ay Oxygen More Names
Replaces: 22690AA490
Description: Rear. Baja. Forester. Impreza. 2.5l. Impreza. 2.0l. 2.0L, 2002-03, auto trans. 2.0L, 2004-05, auto trans. 2.5L turbo, 2004, auto trans.... More Info
Fits:
  • Subaru:
    • Baja,
    • Forester,
    • Impreza
MSRP $192.80
$134.19
MSRP $192.80
$134.19
Oxygen Sensor
Part Number: 22690AA520
Positions: Rear
Other Names: Rear Oxygen Sensor, Sensor Ay Oxygen More Names
Description: Rear. Baja. Forester. Impreza. 2.5l. Impreza. 2.0l. 2.0L, 2004-05, manual trans. 2.0L, 2002-03, manual trans. 2.5L turbo, 2004, manual... More Info
Fits:
  • Subaru:
    • Baja,
    • Forester,
    • Impreza
MSRP $185.23
$128.92
MSRP $185.23
$128.92
Oxygen Sensor
Part Number: 22690AA53B
Positions: Front
Other Names: Sen Assembly-Oxygen More Names
Description: All. Baja. Auto trans. Without turbo. Legacy/Outback. 2.5L, with california, front. More Info
Fits:
  • Subaru:
    • Baja,
    • Legacy,
    • Outback
MSRP $162.35
$113.00
MSRP $162.35
$113.00
Oxygen Sensor
Part Number: 22690AA69A
Positions: Rear, Front
Other Names: Sen Ay-Oxygen More Names
Description: Rear. 2.5l. Front. 2.5l. Legacy/Outback. 2.5L with turbo, manual trans, 5 speed. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $162.35
$113.00
MSRP $162.35
$113.00
Oxygen Sensor
Part Number: 22690AA81A
Positions: Rear
Other Names: Sen Ay Oxygen More Names
Description: 2.5L, all. Rear. 2.5l. Legacy/Outback. 2.5L without turbo. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $163.37
$113.70
MSRP $163.37
$113.70
Oxygen Sensor
Part Number: 22690AA850
Positions: Rear
Other Names: Sensor Ay Oxygen More Names
Description: 2.5L. Rear. WRX STI. Impreza. With turbo. With sti model. More Info
Fits:
  • Subaru:
    • Impreza,
    • WRX STI
MSRP $172.50
$120.06
MSRP $172.50
$120.06
Oxygen Sensor
Part Number: 22690AA91A
Positions: Rear
Other Names: Sen Assembly-Oxygen More Names
Description: Legacy. Rear. 2.5l. 2.5L with turbo. More Info
Fits:
  • Subaru:
    • Legacy,
    • Outback
MSRP $142.05
$98.87
MSRP $142.05
$98.87
Oxygen Sensor
Part Number: 22690AB000
Positions: Rear Lower
Other Names: Sen Ay Oxygen More Names
Description: BRZ. Lower. More Info
Fits:
  • Subaru:
    • BRZ
MSRP $172.50
$120.06
MSRP $172.50
$120.06
Oxygen Sensor
Part Number: 22690AB010
Positions: Rear
Other Names: Rear Oxygen Sensor, Sensor Assembly Oxygen More Names
Description: WRX. 2.0L. Rear. Impreza. Forester. Without turbo. More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • WRX
MSRP $187.50
$130.50
MSRP $187.50
$130.50
Oxygen Sensor
Part Number: 22690AB09A
Other Names: Sen Assembly-Oxygen More Names
Description: Acsent. 2.4L turbo. More Info
Fits:
  • Subaru:
    • Ascent,
    • Legacy,
    • Outback
MSRP $206.33
$143.61
MSRP $206.33
$143.61
Ft Oxygen Sensor
Part Number: 22641AA650
Positions: Front
Other Names: Air/Fuel Sensor, Oxygen Sensor, Sensor Assembly Air Fuel Rati More Names
Description: WRX. 2.0L. Front. Impreza. Forester. Without turbo. More Info
Fits:
  • Subaru:
    • Forester,
    • Impreza,
    • WRX
MSRP $250.00
$174.00
MSRP $250.00
$174.00

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