Walker Products 350-34556 oxygen sensor for the 2001-2003 Hyundai Elantra 4-cylinder 2.0L and other vehicles measures the oxygen in the exhaust gas. This Walker Products oxygen sensor sits in the upstream position and gives the ECU the diagnostic feedback it needs, as a four-wire, narrow-band direct-fit replacement.
- Electrodes coated with a gas-permeable platinum layer
- Monitors the air-fuel ratio to show combustion efficiency
- Monitors exhaust gases and reduces pollutants for a cleaner environment
- Oxygen readings help fine-tune the air-fuel mixture to support fuel economy
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
Quick facts
- Part: Walker Products 350-34556 oxygen sensor
- Fits: 2001-2003 Hyundai Elantra 4-cylinder 2.0L and other vehicles
- Position: Upstream
- Condition: New
A failing sensor might make the engine run poorly, raise fuel consumption or turn on the malfunction indicator light. Before you replace the sensor, look the wiring harness and connector over for physical damage, and have the stored fault codes read at a shop to rule out other causes.
Fits
This oxygen sensor is listed for the 2005-2009 Hyundai Tucson 4-cylinder 2.0L, the 2005-2010 Kia Sportage 4-cylinder 2.0L and a wide range of other Hyundai and Kia models. Open the "Vehicles it fits" section to check your exact model and engine. This listing is one upstream sensor, and the quantity per vehicle is one.
Specifications
Fit and size
- Position: Upstream
- Quantity per vehicle: 1
- Wires: 4
- Thread size: M18 - 1.5
Build and materials
- Type: Narrow-band
- Electrodes: gas-permeable platinum layer
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this the right O2 sensor for a 2001-2003 Hyundai Elantra 4-cylinder 2.0L?
Yes. Walker Products 350-34556 is listed for the 2001-2003 Hyundai Elantra 4-cylinder 2.0L as an upstream oxygen sensor, and that engine takes one.
Will this oxygen sensor fit the 2005-2010 Kia Sportage 4-cylinder 2.0L?
Yes. This upstream sensor is listed for the 2005-2010 Kia Sportage 4-cylinder 2.0L, and that engine takes one.
Is the Walker Products 350-34556 a narrow-band or wideband sensor?
Walker Products 350-34556 is a narrow-band sensor with four wires and an M18 - 1.5 thread, made for the upstream position.
Can a bad upstream oxygen sensor make fuel consumption go up?
Yes, it can. A failed sensor might raise fuel consumption, make the engine run poorly or light the malfunction indicator light.
What does the coating on this oxygen sensor protect against?
The coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases. The electrodes carry a gas-permeable platinum layer.
