DENSO Auto Parts Oxygen Sensor P/N:234-4255
DENSO Auto Parts 234-4342 oxygen sensor for the 2007-2008 Chevrolet Malibu 4-cylinder 2.2L and other vehicles measures oxygen in the exhaust for the engine computer. This DENSO Auto Parts oxygen sensor sits in the upstream position, before the catalytic converter.
A worn sensor can show up as a check engine light, a rough idle or poor fuel economy. Exhaust or vacuum leaks, misfiring spark plugs and fuel delivery faults can be behind these signs too, so track down the cause before you buy a sensor. The fitment lists one upstream sensor per engine, and this listing is a single sensor.
This direct-fit oxygen sensor suits the 2007-2008 Chevrolet Malibu 4-cylinder 2.2L, the 2005-2006 Chevrolet Cobalt 4-cylinder 2.2L, the 2006-2008 Cobalt 4-cylinder 2.4L and the 2007-2008 Pontiac G5 4-cylinder 2.4L. Driving something else? Look up your car and engine in the "Vehicles it fits" section.
Fit and size
Build and materials
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This part cross-references / interchanges with the following part numbers:
Is this the oxygen sensor for a 2007-2008 Chevy Malibu 4-cylinder 2.2L?
Yes. DENSO Auto Parts 234-4342 is an upstream oxygen sensor listed for the 2007-2008 Chevrolet Malibu 4-cylinder 2.2L. For other years or engines, look up your car in the "Vehicles it fits" section.
Is this the oxygen sensor for the 2005-2006 Chevy Cobalt 4-cylinder 2.2L and the 2006-2008 Cobalt 4-cylinder 2.4L?
Yes. DENSO Auto Parts 234-4342 is listed for both of those engine runs, with one sensor in the upstream position on each.
Is this oxygen sensor heated, and how many wires does it have?
Yes. It is a heated narrow-band sensor with four wires and a 9.84 in wiring harness. It mounts by thread, with a thread diameter of 0.708 in.
How can I tell if an upstream oxygen sensor is going bad?
A check engine light, rough idle or poor fuel economy can go with a worn sensor. A shop can test the sensor's signal with a scan tool.
What does the aluminum oxide trap layer in this oxygen sensor do?
The trap layer is designed to protect the ceramic element from silicone and lead poisoning. The laser-welded stainless housing resists corrosion, and a PTFE filter blocks contaminants.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.