Oxygen Sensor for 2008-2012 Audi S5 & More - Walker 250-25038

Walker Products 250-25038 oxygen sensor for the 2008-2012 Audi S5 V8 4.2L and other vehicles measures the oxygen in the exhaust gas to show how efficiently the engine is burning fuel. This Walker Products oxygen sensor is a heated wide-band unit for upstream positions.

• Made for its specific application and fitment position, with the diagnostic feedback the ECU needs
• Measures oxygen in the exhaust gas to monitor the air-fuel ratio and combustion efficiency
• Monitors exhaust gases to help reduce pollutants
• Electrodes made of a gas-permeable platinum layer
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates

Quick facts

• Part: Walker Products 250-25038 oxygen sensor
• Fits: 2008-2012 Audi S5 V8 4.2L and other vehicles
• Position: Upstream, upstream left, upstream right, upstream rear, upstream front
• Condition: New

A failing sensor can show up as rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. A damaged wiring harness or connector can set off those same warnings, so look those over before you replace the sensor.

Fits

This wide-band oxygen sensor fits the 2005-2007 Cadillac CTS V6 2.8L and the 2005-2008 CTS V6 3.6L, along with the 2005 Cadillac STS V8 4.6L and the 2005-2007 STS V6 3.6L. If your car is not named here, open the "Vehicles it fits" section and match your exact model and engine.

Specifications

In the box

One oxygen sensor. The fitment calls for one sensor per application.