Oxygen Sensor for 2008-2009 Buick LaCrosse & More - Walker 250-24248

Walker Products 250-24248 oxygen sensor for the 2008-2009 Buick LaCrosse V6 3.8L and other vehicles measures the oxygen in the exhaust gas to monitor combustion efficiency. It is a 4-wire, direct-fit narrow-band sensor.

• Oxygen readings let the ECU fine-tune the air-fuel mixture, which supports normal fuel economy
• Electrodes made of a gas-permeable platinum layer
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Monitors the exhaust gases to help keep pollutants down
• Made for its specific application and sensor position, with the diagnostic feedback the ECU requires

Quick facts

• Part: Walker Products 250-24248 oxygen sensor
• Fits: 2008-2009 Buick LaCrosse V6 3.8L and other vehicles
• Position: Downstream, upstream left, upstream right, downstream left, downstream right
• Condition: New

A worn or failed sensor can show up as rough running, higher fuel consumption or a lit malfunction indicator light. A damaged wiring harness or connector can be behind those signs too, so look both over for physical damage before you replace the sensor.

Fits

The vehicles it fits include the 2008-2009 Buick LaCrosse V6 3.8L, the 2001-2002 Chevrolet Silverado 2500 V8 6.0L and the 2002 GMC Sierra 1500 V8 6.0L. If your car or truck is not named here, look up its year and engine in the "Vehicles it fits" section. This listing is one sensor, and the fitment counts one sensor per vehicle.

Specifications