ok, got mine in, got the bosch part. however it has finned holes, which i just read apparently foul up quicker over time?
anyway, just a tip getting the old sensor off ona r32 gtst....dont worry about taking the heat shield off. go under the car, use a 22mm ring spanner, solt it on facing towards the back of the car. then get another long spanner, hook it onto the 22mm at right angles (so the forks on the spanners cross), then use that massive torque too budge it off. maybe spray some inox on the thread as well. should take 15 mins too do this tops.