Just so if any one thinks of fitting a VDO temp gage to there Buhk Diesel with a twin terminal sender you will have a failure problem as for some reason
( depth this can be over come with a spacer ) but ever after making a space they will still fail. Even a Buhk spares seller in the UK told me this when I was researching the sender. What some of the local Walker H28s have done is fit a signal terminal VDO sender in the Buhk engine drain and have no problems since and keeping the original bulk sender ( warning light)in the thermostat housing
Some useless information for Loose Change to store away in his brain archive winking at you loose change
At around $80 each its good advice
the Buhk engine block drain thread is 14 mm so buy a 14 mm sender signal terminal not the one below