O2 Sensor, 4-wire Narrow Band, High Quality
4-wire, High Quality Narrow band Oxygen Sensor. Standard Threads 18mm x 1.5, substitute for any Bosch or NTK sensor. This is the sensor that our 034EFI ECUs were programmed to use as well.
There are 2 possible wire color versions, see below:
Black = Blue = Signal O2 output
Gray = White = Secondary ground
White = Black = Ground
White = Black = +12v Power
Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.
Learn More: www.p65warnings.ca.gov