i wouldn't put too much faith in Bosch these days over anybody else personally mate, for two reasons,
firstly, alfa's tend to go wrong electrically more than mechanically, all be it no more than otgher manufacturers do, but who makes 90% of all the fuel injection, abs systems etc etc, Bosch, so thats not a great advert in my opinion,
secondly, Bosch of old, i.e. Bosch Manufacturing of Germany, long since sold its licence to a factory in Spain, and moved most of its own assembly to a base in the PRofChina.
and finally, the bosch ones will be nothing special either.
all silicon insulated ht leads break down eventually, and give problems even if just lack lustre performance if not outright failures, and Bosch did nothing any different to anyone else in this particular part that i know of.
i'm sure i'll be corrected if i'm wrong, but these days, if they look and feel reasonable quality, and don't drop to bits whilst your fitting them, they are proabably just the same sort of quality as anything Bosch offer, but for less money.
the only stand out leads would be those at the other extreme, such as Magnecor etc where they offer upgraded leads in larger diameter, better insulative properties, less losses, etc etc, but in my own opinion again this is not especially great value considering the gains possible for our little italian stallions!
a regular set of decent quality would be my own purchase, £30 ish should do it, anymore is just spending for spendings sake i reckon.
Last edited by PETR0LHEAD; 31-03-13 at 20:00.