John, I think it is a universal item but it
was listed as suitable for the Fiat 126 on this website...probably UK and Europe only though.
http://www.mister-auto.co.uk/en/joi...k-bol-17086100e_g90271_a999BOL-17086100E.html
There must be plenty of other options that would fit but this one is really nice. The thing that would have made it better is that it can only be pulled on as far as shown in the image I posted and I would have liked to clamp it at the alloy/rubber connector for a better grip and to cover the little slot in the coupling. I think the slot is there to allow lubricant to be drizzled in from time to time. I may put in a slug of silicone to prevent loss of grease and ingress of dirt and water.
If I put enough grease in and prevent grease loss, this should be reasonably "fit and forget". Although I find that running a Fiat 500 involves regularly dismantling systems in any case.:bang:
Incidentally, the same supplier lists the gearbox end boot and seal assembly, a bit more expensive than most specialist suppliers but stated as made by SKF.