Oxygen Sensor for 1987-1990 Jeep Wrangler & More - Walker 250-21001

Walker Products 250-21001 oxygen sensor for the 1987-1990 Jeep Wrangler 6-cylinder 4.2L and other vehicles reads the oxygen in the exhaust gas. Each Walker Products oxygen sensor is made for its specific application and fitment position, and sends the diagnostic feedback the ECU expects.

• Monitors exhaust gases to help reduce pollutants
• Determines the oxygen content of the exhaust gas to monitor the air-fuel ratio for combustion efficiency
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
• Electrodes are coated with a gas-permeable platinum layer
• Measures oxygen levels to fine-tune the air-fuel mixture, which helps support fuel economy

Quick facts

• Part: Walker Products 250-21001 oxygen sensor
• Fits: 1987-1990 Jeep Wrangler 6-cylinder 4.2L and other vehicles
• Position: Upstream, upstream left, upstream right
• Condition: New

A failing sensor can show up as an engine that runs poorly, higher fuel consumption or a lit malfunction indicator light. Before you replace the sensor, have the stored fault codes read and, with the engine off and cool, look over its wiring harness and connector for physical damage, since damage there can look much the same.

Fits

Vehicles covered include the 1987-1990 Jeep Wrangler 6-cylinder 4.2L and the 1997-1998 Chevrolet Malibu 4-cylinder 2.4L. This listing is a single sensor, and the fitment calls for one per application. If your car is not named here, look up your year and engine in the "Vehicles it fits" section.

Specifications