Replacement 18mm O2 Sensor for some earlier Triumph, Ducati and Aprilia Models using 4 wire connector. 

This is a non OEM replacement sensor, and is a cheaper alternative than a OEM priced item.

Wire length 310mm to cover most models. ( see picture for connector type)

If you are unsure of fitment please message me with the make, year and model of your bike.

Although i can check that the size (18mm) and connector plug / wiring is correct for your bike i can not check if the length (310mm) is long enough, so you will need to check this yourself.