Oxygen Sensor for 2001-2003 Audi A8 Quattro - Walker 350-34073

Walker Products 350-34073 oxygen sensor for the 2001-2003 Audi A8 Quattro V8 4.2L measures oxygen in the exhaust gas. Each Walker Products oxygen sensor is made for its specific application and fitment position and gives the ECU the diagnostic feedback it requires.

• Narrow-band, 4-wire sensor in a direct-fit design
• Electrodes made of a gas-permeable platinum layer
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Determines the oxygen content of the exhaust gas to monitor the air-fuel ratio for combustion efficiency
• Monitors exhaust gases and reduces pollutants

Quick facts

• Part: Walker Products 350-34073 oxygen sensor
• Fits: 2001-2003 Audi A8 Quattro V8 4.2L
• Position: Downstream left, downstream right
• Condition: New

A failing oxygen sensor can show up as poor running, higher fuel consumption or an illuminated malfunction indicator light. Before you replace the sensor, rule out physical damage to its wiring harness and connector, since a damaged harness or connector may be behind what you are seeing and can also shorten the sensor's life.

Fits

This direct-fit sensor is for the 2001-2003 Audi A8 Quattro V8 4.2L, in the downstream left and downstream right positions. The listing is one sensor, and this application takes one.

Specifications