DENSO Auto Parts Oxygen Sensor P/N:234-4951
DENSO Auto Parts 234-4713 oxygen sensor for the 2001-2002 Nissan Pathfinder V6 3.5L and other vehicles measures the oxygen left in the exhaust and reports it to the engine computer. The reading helps the computer keep fuel mixture and emissions in check.
A worn sensor can show up as a check engine light, rougher running or poorer fuel economy, though a fault in the catalytic converter or the upstream oxygen sensor can lie behind those signs too, so find the cause before replacing this one.
This downstream oxygen sensor fits the 2001-2002 Nissan Pathfinder V6 3.5L and the 2002-2003 Infiniti QX4 V6 3.5L. Both take two of this sensor, and this listing is one sensor.
Fit and size
Build and materials
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
Is this O2 sensor the right one for the 2001-2002 Nissan Pathfinder V6 3.5L?
Yes. DENSO Auto Parts 234-4713 is a downstream oxygen sensor for the 2001-2002 Nissan Pathfinder V6 3.5L, and it also fits the 2002-2003 Infiniti QX4 V6 3.5L.
Is this DENSO Auto Parts oxygen sensor heated?
Yes. DENSO Auto Parts 234-4713 is a heated, narrow-band sensor with 4 wires and a male connector.
What are the thread size and wire length of this oxygen sensor?
The thread diameter is 0.708 in and the wiring harness is 47.83 in long. The sensor mounts by threading in.
How can I tell if this downstream oxygen sensor is wearing out?
A check engine light, poorer fuel economy or rough running can be signs of a worn sensor. A shop can read the codes and run any tests that need the engine running.
What does the aluminum oxide trap layer in this sensor do?
The aluminum oxide trap layer is designed to protect the ceramic element from silicone and lead poisoning. A PTFE filter also blocks contaminants from the element.
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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.