Thankyou.
Been buying, returning and buying again various male and female torx tools for the job combined with enough internet surfing to last me a lifetime! Finally worked out its the return pulley for A/C unit which bolts onto engine block. Been chatting to main dealer parts dept and sent pic to confirm. So if thats confirmed by him tomorrow ill be asking if i can just get the shorter belt and bypass the ac system as it dosent work anyway. If i can itll make my life alot easier and the vans life will be saved .
Van was only meant to last until end of summer (end of mot) as im afraid it gets hard used on forestry tracks etc as well as long distance drives around scotland looking for glow worms but ive gotten really fond of it as its been so reliable and cheap to run so hoping i can get a bit longer with it.