where to find neoplan bus parts?

i was asked to fix a door (the one that the spare tire sits behind, under the drivers seat)
on our church bus
it is a 1998 model

i looked at it, and the latch simply broke, the nylon catch that bolts to the door
i figured it shouldnt take much to replace it, but i just got to find out where to order it
( @RustyRatRod maybe you carry it? )