Oxygen Sensor for 1988-1989 Toyota 4Runner & More - Walker 350-34629

Walker Products 350-34629 oxygen sensor for the 1988-1989 Toyota 4Runner 4-cylinder 2.4L or V6 3.0L and other vehicles measures the oxygen in the exhaust gas to gauge combustion efficiency. This Walker Products oxygen sensor is made for its specific application and fitment position, and it gives the ECU the diagnostic feedback it requires.

• Electrodes with a gas-permeable platinum layer
• Determines the oxygen content of the exhaust gas and monitors the air-fuel ratio for combustion efficiency
• Measures oxygen levels so the air-fuel mixture can be fine-tuned for fuel economy
• Monitors exhaust gases and helps reduce pollutants
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates

Quick facts

• Part: Walker Products 350-34629 oxygen sensor
• Fits: the 1988-1989 Toyota 4Runner 4-cylinder 2.4L or V6 3.0L and other vehicles
• Position: Upstream
• Condition: New

A failing sensor can show up as rough running, higher fuel use, more exhaust emissions or a lit malfunction indicator light. These signs alone do not prove the sensor is at fault, since a vacuum leak can also make an engine run poorly. With the engine off and cool, look over the sensor, wiring harness and connector for physical damage.

Fits

This sensor fits the 1988-1989 Toyota 4Runner 4-cylinder 2.4L or V6 3.0L and the 1988 Toyota Pickup 4-cylinder 2.4L or V6 3.0L. Both vehicles take one; this listing is a single sensor.

Specifications