V belt. And I know what you mean. 80 amp is nothing and its not like other cars of the same vintage came with similar. Other cars easily came with 100+. Also not to mention that with age they degrade. Mine is putting out 13.9v at battery. That has me a little concerned that amp output is also down.

But since its a standard "swing arm" mount I would think others would either go right in or go in with little modification. At least I hope.

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1991 560 SEL / 185k miles
1992 750il / 17k miles - project car