The 5-wire wide-band oxygen sensor is a replacement sensor for 2007 Audi S6 with the 5.2L V10 engine in the upstream position. It measures the exhaust air-fuel ratio across a broad range so the engine computer can meter fuel precisely. It has a M18x1.5 thread.

Walker Products 350-35053 Oxygen Sensor Features:

• Fits 2007 Audi S6 with the 5.2L V10 engine
• 5-wire wide-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 475 mm (18.7 in.) overall length
• Male oblong connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue