Oxygen Sensor for 2001-2006 BMW M3 & More - Walker 350-34178

Walker Products 350-34178 oxygen sensor for the 2001-2006 BMW M3 6-cylinder 3.2L and other vehicles measures the oxygen in the exhaust gas to show how efficiently the engine burns fuel. This upstream sensor gives the ECU the readings it uses to monitor the air fuel ratio.

• 4-wire narrow-band design for the upstream position
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Electrodes made of a gas-permeable platinum layer
• Measures oxygen levels to help fine-tune the air-fuel mixture and support fuel economy
• Monitors exhaust gases to help reduce pollutants

Quick facts

• Part: Walker Products 350-34178 oxygen sensor
• Fits: 2001-2006 BMW M3 6-cylinder 3.2L and other vehicles
• Position: Upstream
• Condition: New

A failing sensor can show up as the engine running poorly, higher fuel use or a lit check-engine light. A damaged wiring harness or connector can be behind these signs too, so track down the cause before you buy a sensor. This listing is one sensor, for the single upstream position.

Fits

It is a direct-fit oxygen sensor for the 2001-2006 BMW M3 6-cylinder 3.2L and for the 2001-2002 BMW Z3 6-cylinder 3.2L.

Specifications