| Listed in parts books | Not catalogued by year yet |
HEAD GASKET UNIT 500 1958-66 (.048 thick copper) for later thin use 70-4675
Thick copper head gasket, .048 in, for the Triumph 500 twin, catalog dated 1958-66.
This is the copper head gasket for the Triumph 500 unit twin, catalog listed for 1958-66. It's the thick version, .048 in copper, and it sits between the cylinder head and barrel to seal the combustion chambers.
Read more
The catalog notes that a later thin gasket, PN 70-4675, was used going forward, so if you're working on a later engine or your parts book calls out the thin style, that's the one you want instead of this one.
Copper gaskets like this one need to be annealed before fitting to seal properly. Give us a call if you're not sure which thickness your engine takes before you order.
Sorry if we got something wrong here. If you think this information isn't correct, .