When I rebuilt the cooling system on my 1999 Alpine Coach 2 years ago, it took 2 months to get the thermostatic valve (wax valve) that controls the hydraulic cooling fan speed. This has to be special ordered from the UK. I did not want to get stuck on the road if this valve ever failed, so I purchased a spare. I sold my coach, so I have this new valve (never used) for sale. I am asking the same price I paid for it $326.79. If anyone is interested, please send me site mail.
My understanding is that this valve was used on all Alpine Coaches through the 2004 model year. It was also used on several other diesel pushers that have the side mounted radiator.