Walker Products 250-241285 rear oxygen sensor for the 2018-2020 Acura RLX V6 3.5L measures the oxygen in the exhaust gas to show how efficiently the engine burns fuel. This Walker Products oxygen sensor is a 4-wire, narrow-band, direct-fit unit.
Rough running, higher fuel use, more exhaust emissions or a lit malfunction indicator light can mean the sensor is worn, though a damaged wiring harness or connector can be behind the same signs, so all three should be checked for physical damage.
It fits the 2018-2020 Acura RLX V6 3.5L, which takes one sensor in this downstream rear position. This listing is one sensor.
Fit and size
Build and materials
Does the Walker Products 250-241285 fit the 2018-2020 Acura RLX V6 3.5L?
Yes. Walker Products 250-241285 is a rear (downstream) oxygen sensor for the 2018-2020 Acura RLX V6 3.5L, and that car takes one in this position.
Is this oxygen sensor narrow-band or wideband?
This sensor is narrow-band. It is a direct-fit unit with 4 wires and an M18 - 1.5 thread.
Is the Walker Products 250-241285 an upstream or downstream sensor?
It is a downstream sensor in the rear position. It measures the oxygen content of the exhaust gas to show combustion efficiency.
Can a bad rear oxygen sensor raise fuel consumption?
It can. A failed sensor may make the engine run poorly, increase fuel consumption and exhaust emissions, or light the malfunction indicator light. A shop can read the stored codes.
What is the coating on this rear oxygen sensor for?
It shields the electrode surfaces from contamination and erosion caused by combustion residue and particulates in the exhaust. The electrodes themselves are a gas-permeable platinum layer.
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.
