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Bosch Oxygen Sensor; Five Wire Wideband A/F Sensor | 17351

Audi A4 Quattro, A4, A8 Quattro, TT Quattro, TT
VW Jetta, Passat, Golf, Beetle, Touareg, EuroVan, Jetta IV, Jetta MK4, Phaeton, Jetta MK3 & more
In Stock Status
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Leaves warehouse within 1-2 business days.

Make Sure It Fits

P/N: 17351 Bosch OEM
Five Wire Wideband A/F Sensor
Bosch has superceded a number of sensors to this one unit, appearance may not match original. Recommended replacement interval: 100,000 miles. 1 per car.
Cross References:
  • 021906262B
  • 0258007057
  • 0258007057009
  • 0258007109
  • 0258007109D09
  • 0258007227
  • 0258007229
  • 0258007229D09
  • 0258007351
  • 0258007351D09
  • 06A906262AF
  • 06A906262BC
  • 06A906262BH
  • 06B906265D
  • 077906262
  • 077906262A
  • 077906262D
  • 077906262E
  • 077906265AB
  • 077906265AC
  • 07C906262K
  • 07C906262N
  • 17014
  • 17090
  • 17109
  • 17227
  • 17229
  • 1K0998262D
  • W01331828331
  • W01331895038
  • W01331896024

Oxygen (O2) sensors are emissions control sensors that detect levels of oxygen in an engine's exhaust. When the element inside the O2 sensor heats up, oxygen flowing through the sensor causes the element to create electricity. This electrical current is sent to the engine's computer and converted to an oxygen level reading. Some O2 sensors are equipped with a heating element to speed up the oxygen-sensing process, while others rely on the engine's exhaust to heat them.

O2 sensors are one of the more commonly failed sensors in an emissions control system. Continuous exposure to exhaust temperatures ranging from 300°-700° Fahrenheit over time causes the sensor element to lose its ability to create voltage, making the sensor give incorrect readings. When this happens, the engine computer operates the fuel injectors on preset fault parameters and turns the check engine light on with a fault code. If an O2 sensor behind the catalytic converter fails, the ECM may turn on the check engine light with a fault code for the catalytic converter because the faulty O2 sensor reading gives the appearance that the catalytic converter is not functioning.

Failed O2 sensors will often result in a lack of engine power that is not usually noticed but a decrease in fuel economy, that is. If your check engine light is on and your vehicle is driving normally, you should still have the fault code checked, as it could very well be an O2 sensor that failed and is causing your vehicle to consume excessive fuel.

View more Bosch O2 Sensors.

Bosch is the world's largest supplier of components to the automotive industry. The Bosch product line includes alternators & starters, brakes, electronic controls and sensors, fuel system parts and management, ignition system components, and steering system components. All Bosch automotive parts are either OEM (Original Equipment Manufacturer) or made to their specs as a replacement part for the OEM unit.
Left = Driver side and Right = Passenger side.
All parts are priced individually unless identified as a set or kit. "Per car" notes identify how many of a given part your car has and "Left/Right or Front/Rear" notes means the part fits the left or right side of the car. These parts are still sold individually and you'll need to select the appropriate quantity if you plan to replace more than one of this item.

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What This Bosch Oxygen Sensor Fits?

Application information below is for reference only and should not be used to determine the exact vehicle fitment. Please use the "Make Sure It Fits" vehicle selection box above to determine the exact fitment and review any application notes. If you need any help determining if this part works with your vehicle, please don't hesitate to contact us.

02-05 - A4 Base, B6, Cabriolet
06-06 - A4 Cabriolet
01-02 - A4 Base, B5
For models with chassis serial number from 8D-2-000000.
02-05 - A4 Quattro Base, Avant, B6, Cabriolet
01-02 - A4 Quattro Base, Avant, B5
For models with chassis serial number from 8D-2-000000.
04-06 - A8 Quattro Base, L
Upstream Left
Upstream Right
01-06 - TT
01-04 - TT Quattro
For Quattro models with AWP engine code only.
01-05 - Beetle Base, Turbo, Turbo S
01-01 - Beetle
01-03 - EuroVan
00-06 - Golf GTI, GTI 1.8T, GTI GLS, GTI GLX, GTI VR6 & more
04-04 - Golf
06-06 - Golf IV GL, GLS
99-99 - Golf MK4 GTI
99-04 - Jetta GLI, GLS, GLS Turbo, GLX, III GLS VR6 & more
05-05 - Jetta IV Turbo
99-99 - Jetta MK3 GLX
99-99 - Jetta MK4 GLS, GLX
02-05 - Passat
05-05 - Passat GLS 4 Motion
05-06 - Phaeton V8
Upstream Left
Upstream Right
04-07 - Touareg