Alfa Romeo Bulletin Board & Forums - View Single Post - Flex joint, giubo, "donut"
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post #2 of (permalink) Old 06-03-2019, 06:07 AM
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1978alfa's Avatar
Join Date: Oct 2006
Location: Central Florida
Posts: 1,028
OEM looks to have aluminum inserts and the other has pressed steel.
I'm not sure which has better thermal bonding characteristics with rubber.
I'd call them and inquire.

'67 Duetto, '74 GTV
Past '78 Alfetta w/ TwinSpark
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