Walker Products 250-24749 oxygen sensor for the 1999-2001 Ford F-150 V8 5.4L, the 1999-2003 F-150 V8 4.6L, the 1999-2004 F-150 V6 4.2L and other vehicles measures the oxygen in the exhaust gas so the ECU can judge combustion efficiency. This Walker Products oxygen sensor is a direct-fit, narrow-band unit that gives the ECU the diagnostic feedback it needs.
- Monitors the oxygen content of the exhaust gas to track the air-fuel ratio for combustion efficiency
- 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
- Electrodes with a gas-permeable platinum layer
- Monitors exhaust gases to help reduce pollutants
Quick facts
- Part: Walker Products 250-24749 oxygen sensor
- Fits: the 1999-2001 Ford F-150 V8 5.4L, the 1999-2003 F-150 V8 4.6L, the 1999-2004 F-150 V6 4.2L and other vehicles
- Position: Upstream, upstream left, upstream right, upstream rear, upstream front
- Condition: New
A failing sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or light the malfunction indicator lamp, and newer vehicles may store a related fault code. A vacuum leak, an exhaust leak, a misfiring spark plug or damaged wiring can be behind those signs too, so find the cause before you buy a sensor. With the engine off and cool, look over the sensor, wiring harness and connector for physical damage.
Fits
It is listed for a wide range of Ford models and other makes, and it works as an oxygen sensor for the 2001-2008 Ford Escape V6 3.0L and the 2002-2003 Ford Explorer V6 4.0L or V8 4.6L. The fitment calls for one sensor per application, and this listing is a single sensor.
Specifications
Fit and size
- Position: upstream, upstream left, upstream right, upstream rear, upstream front
- Quantity per application: 1
- Thread size: M18 - 1.5
- Wires: 4
Build and materials
- Type: narrow-band
- Electrodes: gas-permeable platinum layer
- Coating: on the electrode surfaces
- Condition: New
Frequently Asked Questions
Will this Ford F-150 oxygen sensor fit the 1999-2001 F-150 V8 5.4L?
Yes. Walker Products 250-24749 is listed for the 1999-2001 Ford F-150 V8 5.4L. For another model, year or engine, look up your own car in the "Vehicles it fits" section.
What thread size does the Walker Products 250-24749 oxygen sensor have?
Walker Products 250-24749 has an M18 - 1.5 thread. It is a narrow-band sensor with four wires.
Is this an upstream oxygen sensor?
Yes. This is an upstream oxygen sensor, sold for the upstream left, upstream right, upstream front or upstream rear position depending on the application.
What does the coating on this narrow-band oxygen sensor do?
The coating helps prevent contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases. The electrodes have a gas-permeable platinum layer.
Which symptoms can a worn oxygen sensor cause?
A worn oxygen sensor can cause poor running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator lamp. A shop can test the sensor and its circuit.
