Mine were E-Bay. They came with a matching keychain. Aluminum is aluminum.>Is this an official alfa part?
Those look promising, brass and all - I don't suppose there's a risk they won't be a match for TPMS valves? I'm contemplating ordering a couple of sets.https://www.exoticcargear.com/produ...r-tire-valve-caps-alfa-romeo-full-color-logo/
I just bought these. Carbon fiber and brass, shouldn't seize.
Actually, on second thought.......:crying:
But antiseize is a metallic paste designed to prevent just this from happening. Now yes, the dissimilar metals will cross corrode with all kinds of nasty mineral deposits, but if you add PB blaster or WD-40 (it's not ice frozen rocket motor turbo pumps so the water displacement factor won't do much more if any than the PB blaster). Let the chemicals start eating the cross corroded metals, apply heat to expand the cap, stress the corroded joint/threads, and then use a small pair of pliers to break it loose. Now the valve stem itself could be the weak link, in that it is too pliable to get enough leverage to loosen the cap once it's corroded on. That may be the explanation here. If so, sorry it took me two days to figure it out But then you could use two pairs of pliersNo it's not. Heat did nothing. GoodYear had to pull the valve off with them on. It's a reaction of the two metals that form a weldlike bond.
Assuming the valve stem is brass, suitable compatible metals should beTrust me on this, I bought PB blaster, tried torching them, dremel cut one and finally went to GoodYear and paid $100 for new valve stems. I was lucky the tpms wasn't screwed up or it would have cost a few hundred. Until you experience it you won't believe it.