there is a current thread on Tom Yang's site regarding heater control valves. not 400i specific,but maybe a suitable replacement or lead you in the right direction. i could use one myself,but OEM from the UK is kind of pricey for a part that is easily left permanently closed. good luck.post any leads. brett
I have a bucket of the heater valves for the 250 (more Sodacoms junk). Don't know if they have any value: Image Unavailable, Please Login
those are really cool looking little valves.i wonder if i could use it in place of the stuck one on the 400? anybody hazzard a guess before i pull mine out? brett