Walker Products 350-34013 left oxygen sensor for the 2001-2006 BMW M3 6-cylinder 3.2L and other vehicles reads the oxygen content of the exhaust gas. The ECU uses that reading to watch the air-fuel ratio and combustion efficiency.
- Direct-fit, narrow-band design with four wires
- Electrodes with a gas-permeable platinum layer
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
- Measures oxygen levels so the air-fuel mixture can be fine-tuned, which helps fuel economy
- Monitors exhaust gases to help reduce pollutants
- Made for its specific application and fitment position, with the diagnostic feedback the ECU requires
Quick facts
- Part: Walker Products 350-34013 oxygen sensor
- Fits: 2001-2006 BMW M3 6-cylinder 3.2L and other vehicles
- Position: Upstream, upstream left
- Condition: New
A worn sensor can mean the engine runs poorly, burns more fuel or puts out more exhaust emissions, or it can light the malfunction indicator light. The wiring harness and the connector can also be behind those signs, so look both over for physical damage first. Newer vehicles may store a fault code in the ECU.
Fits
This left upstream oxygen sensor is a direct-fit part for the 2001-2006 BMW M3 6-cylinder 3.2L, the 1996-2002 Mercedes-Benz SL500 V8 5.0L, the 2001-2002 BMW Z3 6-cylinder 3.2L and many other vehicles. If your car is not named here, look up its year and engine in the "Vehicles it fits" section. This listing is one sensor, and that position takes one; sensors for other positions are ordered separately.
Specifications
Fit and size
- Position: upstream, upstream left
- Quantity per vehicle: 1
- Thread: M18 - 1.5
Build and materials
- Type: narrow-band, direct fit
- Wires: 4
- Electrodes: gas-permeable platinum layer
- Condition: new
Interchange: CTK-OSMB4005
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Will this BMW M3 oxygen sensor fit a 2001-2006 model with the 6-cylinder 3.2L?
Yes. Walker Products 350-34013 is listed for the 2001-2006 BMW M3 6-cylinder 3.2L, and the left upstream position takes one sensor.
Does this Mercedes SL500 oxygen sensor fit a 1996-2002 model with the V8 5.0L?
Yes. The 1996-2002 Mercedes-Benz SL500 V8 5.0L is in the fitment for Walker Products 350-34013, which takes one sensor in the left upstream position.
Is this Walker Products oxygen sensor narrow-band?
Yes. This sensor is a 4-wire narrow-band type with an M18 - 1.5 thread and a direct-fit design.
Can a bad left upstream oxygen sensor turn on the check engine light?
Yes. A failed oxygen sensor can make the engine run poorly, raise fuel use and exhaust emissions, or light the malfunction indicator light.
What does the coating on this oxygen sensor protect?
The coating guards the electrode surfaces against contamination and erosion from combustion residue and particulates in the exhaust. Under it, the electrodes use a gas-permeable platinum layer.
