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Walker Exact Fit Oxygen Sensor 350-34928
  • Part # 350-34928
  • SKU # 924078
$
295
99
Application: Downstream sensor (located after catalytic converter)
Notes: Aftermarket part, Narrowband. Engine code CYMC
Denso Exact Fit Oxygen Sensor 234-5019
  • Part # 234-5019
  • SKU # 259568
$
261
99
Application: Upstream sensor (located before catalytic converter)
Notes: Aftermarket part, Wideband.
Denso Exact Fit Oxygen Sensor 234-4754
  • Part # 234-4754
  • SKU # 269707
$
191
99
Application: Downstream sensor (located after catalytic converter)
Notes: Aftermarket part, Narrowband

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2017 Audi A4 Oxygen Sensor

Your engine's performance depends on the right air-fuel ratio, and the 2017 A4 O2 sensor helps your ECU keep tabs on this ratio so things run smoothly. Reduced gas mileage, rough engine idling, and a lit engine indicator are all signs that something is wrong with the sensor. Left unchecked, it can damage the cat converter. Find the right price on 2017 Audi A4 O2 sensors to keep your car running smoothly down the road ahead.