thats a shame had it of been the plastic one under the bonnet ive got a BRAND NEW ONE SAT HERE STARING AT ME lol

have to put that bad boy on eBay

right ill see if ive got a spare one, just changed the pump on mine and it had a hose on it, so i think ive still got the old one.

Im certain the internal diameter is 18/19mm, the external should really matter, just makes sure the hose clips fit over, and surely you will have to buy a length of hose anyway so u can cut it down to size?

Are you changing yours or something?