Feuling, Wide Band Lambda 02 Sensor

This is a wide band lambda sensor; to fit auto tune modules and dynos. Comes with 5-wire; broadband; flat contacts in connector; 18mm; 23" OAL wiring harness. Wideband air-fuel ratio sensors perform the same function as the regular (lower cost) O2 sensor; but they are able to work over a much wider air/fuel ratio range; more precisely measuring the amount oxygen in the exhaust. Narrow band sensors just switch between rich (too much fuel; not enough oxygen) and lean (too much oxygen; not enough fuel). Wideband sensors use a more costly sophisticated sensing element that provides a signal to the vehicles ECU for a much better air fuel ratio over a wider range. - Advanced Wideband sensing element for exact air/fuel measurement - Robust sensor design increases sensor longevity - Seared protection tube due to 100% functional quality test - True direct-fit OE connectors and harness - Pre-coated threads with anti-seize compound right out of the box