Expansion cap level sensor

Hi all. I'm normaly found 'doing my bit' over on the Discovery forum but need a little help from you Range Rover guys and girls.

My 1993 200tdi Discovery has decided to split the expansion tank and apart from looking for a clear plastic replacement (easy level check) I am also looking for a water level sensor type cap. I seem to remember a Range Rover (poss around 1993 -1995) having the same type of plastic cap as my Discovery but also had a water level sensor fitted to it.

I can sort the wiring but I need to know (A) if anyone knows the part number, (B) if they know what model/year it was fitted. (C) whether it will fit the Disco expansion tank.

Feel free to add other options,

TIA

regards

Dave

The classic ive got j reg has got the floaty bit of plastic on the cap. Dont the expansion tanks off the disco 3.9?I would expect so but not certain

Thanks for that, its a good start. All I need now is some part numbers ect and I should be on my way, any idea anyone...........?

regards

Dave