Give your engine computer the exhaust-oxygen feedback it needs with the Walker Products 350-31026 Oxygen Sensor. This direct-fit, narrow-band sensor measures combustion efficiency from the amount of oxygen in the exhaust gas. It fits many vehicles, among them the 1989-1990 Hyundai Sonata (L4-2.4L), 1987-1990 Dodge Colt (L4-1.5L, L4-1.6L, L4-1.8L or L4-2.0L) and 1987-1990 Plymouth Colt (L4-1.5L, L4-1.6L, L4-1.8L or L4-2.0L). It mounts in the upstream position. See the "Vehicles it fits" section for the full list.
Walker Products developed its engine management and oxygen sensors as Original Equipment Manufacturer replacements. Each part number is built for its specific application and fitment position, so it gives the diagnostic feedback the ECU requires.
- Platinum electrodes: the electrodes are made of a gas-permeable platinum layer.
- Protective coating: helps keep combustion residue and exhaust particulates from contaminating and eroding the electrode surfaces.
- Air-fuel monitoring: reads the oxygen content of the exhaust gas so the engine computer can fine-tune the air-fuel mixture. This supports normal fuel economy and helps limit exhaust pollutants.
- Specs: unheated narrow-band sensor with a single 20-gauge wire, one male spade terminal, a round female connector, a threaded mount and a wrench size of 22.
Signs this part may need replacing include:
- stored ECU fault codes related to the sensor
- the engine running poorly
- higher fuel consumption or exhaust emissions
- a lit malfunction indicator light (MIL)
These symptoms can have other causes, so diagnose first. Also inspect the sensor, wiring harness and connector for physical damage.
This Walker Products oxygen sensor comes from an ISO 9001/TS 16949 certified company that has supplied engine management sensors since 1946. The listed applications use one sensor. Country of origin: China.
Frequently Asked Questions
Is this the right 02 sensor for a 1989-1990 Hyundai Sonata 2.4L?
It is listed as a direct fit for the 1989-1990 Hyundai Sonata with the L4-2.4L engine, in the upstream position. Check the "Vehicles it fits" section for the other listed vehicles.
Does it fit the 1987-1990 Dodge Colt 1.5L / 1.6L / 1.8L / 2.0L and 1987-1990 Plymouth Colt 1.5L / 1.6L / 1.8L / 2.0L?
Yes, it is listed for the 1987-1990 Dodge Colt and 1987-1990 Plymouth Colt with the L4-1.5L, L4-1.6L, L4-1.8L or L4-2.0L engine, depending on year. Confirm yours in the "Vehicles it fits" section.
What does an oxygen sensor do?
It measures the oxygen in the exhaust gas and reports it to the engine computer. The computer uses this reading to monitor the air-fuel ratio and adjust the mixture for combustion efficiency.
Is this sensor heated?
No. It is an unheated, narrow-band sensor with a single 20-gauge wire, one male spade terminal and a round female connector.
What are signs the oxygen sensor may need replacing?
Look for sensor-related fault codes, poor running, higher fuel use or emissions, or a lit MIL. Diagnose the cause first, and check the wiring and connector for damage.
