Walker Products 250-21028 oxygen sensor for the 1999 Chevrolet Malibu 4-cylinder 2.4L and other vehicles reads the oxygen content of the exhaust gas for the ECU. This upstream, direct-fit narrow-band sensor is made for its specific application and position, and it gives the ECU the diagnostic feedback it requires.
- Monitors exhaust gases to help reduce pollutants
- Monitors the air-fuel ratio for combustion efficiency
- Electrodes made of a gas-permeable platinum layer
- Measures oxygen levels to fine-tune the air-fuel mixture and support fuel economy
- Electrode coating guards against contamination and erosion from combustion residue and particulates
Quick facts
- Part: Walker Products 250-21028 oxygen sensor
- Fits: 1999 Chevrolet Malibu 4-cylinder 2.4L and other vehicles
- Position: Upstream
- Condition: New
A failing sensor might make the engine run poorly, raise fuel consumption and exhaust emissions, or turn on the malfunction indicator light. A damaged wiring harness or connector can be behind those signs too, so look both over and find the cause before buying a sensor. This listing is one sensor, and the 1999 Chevrolet Malibu 4-cylinder 2.4L takes one.
Fits
This upstream sensor fits the 1999 Chevrolet Malibu 4-cylinder 2.4L, the 1995-2002 Saturn SC1 4-cylinder 1.9L, the 1995-2002 Saturn SC2 4-cylinder 1.9L and a wide range of other vehicles. Driving something else? Run your car's year and engine through the "Vehicles it fits" section before you order.
Specifications
Fit and size
- Position: Upstream
- Quantity per vehicle: 1
Build and materials
- Type: Direct-fit 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 Chevy Malibu oxygen sensor for a 1999 Chevrolet Malibu 4-cylinder 2.4L?
Yes. Walker Products 250-21028 is an upstream oxygen sensor listed for the 1999 Chevrolet Malibu 4-cylinder 2.4L, which takes one.
Can I use this Saturn SC2 oxygen sensor on a 1995-2002 model with the 4-cylinder 1.9L?
Yes. Walker Products 250-21028 is listed for the 1995-2002 Saturn SC2 4-cylinder 1.9L in the upstream position, one sensor per car.
Is this Walker Products oxygen sensor wideband or narrow-band?
This sensor is a narrow-band, direct-fit unit. Its electrodes are made of a gas-permeable platinum layer.
Can a bad upstream oxygen sensor turn on the malfunction indicator light?
Yes, it can. A failing sensor might also make the engine run poorly or raise fuel consumption and exhaust emissions.
What does the coating on this oxygen sensor's electrodes do?
The coating keeps combustion residue and particulates in the exhaust gas from contaminating or eroding the electrode surfaces.
