Hi all. My 1990 3.6L V8Q is in need of new radiator hoses (upper, but especially lower) as mine are leaking like sieves. Over here in Canada these cost several hundred dollars even for used ones from the wrecking yard.

I was wondering, is anyone aware of a universal replacement? Or are there any compatible hoses from perhaps the later Audi 100/5000s or possibly the A8?

Another option, at least where the lower radiator hose is concerned, could be making my own hose. Do you guys know what the correct circumference of the line would be?

Thanks!