its a good thing there are lots of places to get parts from now besides the dealer . here is where i bought my o2 sensor for my b3 and it fit perfect and from the description the lead will be longer than oem not shorter so u will be good to go and free shipping over 75$ . best price i have seen on o2 sensors in canada .
http://www.autopartsway.ca/PartList..../pagenum1/tabS