HiSport Oxygen Sensor 250-54065 - Heated O2 Sensor Replacement, 4-Wire Air Fuel Ratio Sensor Upstream Compatible with 2007-2009 Honda CR-V 2.4L, 2013-2015 Acura ILX 2.0L

Improve Engine Performance Ensure Safe Operation Less CO2 Emissions Oxygen Sensor Location All vehicles built after 1996 normally have at least 2pcs oxygen sensors V-6 and V-8 engines will usually have 3 or 4 pieces of oxygen sensors, 4 cylinder engines will have 2pcs oxygen sensors The O2 sensors will have 1-4 wires on them The front oxygen sensor(s) will be located under the hood, on the exhaust side, near the engine The rear oxygen sensor( s) will be located under the vehicle, directly after the catalytic convertor.