So having ascertained that my sudden loss of coolant yesterday seem not to have been a split hose, but the actual radiator giving up in style. I have been looking online and apart from a mishimoto aluminium upgrade I don't seem to be able to find a genuine part anywhere. I am happy to upgrade if it's worth it but would be good to know if there is a good source for parts to know about.

Try http://www.importcarparts.co.uk

As above or upgrade to samco [emoji6]

Thanks guys, I'll take a look at both.

Do Samco not just make silicone hoses?

Sorry I miss read your original post [emoji39]

And thought you were after a bottom rad hose .

Any turbo classic rad will fit from your local parts place or you can opt for a ally rad from the likes of japspeed.

you'll just have to fit your twin sti fans and then have the pita job of bleeding the coolant system (there's a few threads on here explaining the best way to refill).

eurocarparts parts are a good shout. £57

http://www.eurocarparts.com/ecp/p/car-parts/car-cooling-parts-and-car-heating/cooling/car-radiator/?203800020&1&470d63e34a8e5fc309d65a82fb3e8ac1543f5955&000261

Import car parts, 100% that's where all mine where bought from for the build