the vdo senders work, thread is m10x1, and you need one with warning contact too use your light in speedo also
the preblem is, that there is not enough space beween the engine case and the sender, so the vdo sender is to big to mount it in the same way as the original sender... you need also an vdo adapter ( mounting kit), should be also abailible.... 90° mounting hardware.
and be carefull, there are many types of vdo availible, ask the seller at wich preasure the warninglight will came... (engraved on the sender) for 36hp you need th elow value (0.25bar)
www.oval56.de
www.oval56.com
DBK Germany