Genuine Mini Spares Klinger timing chain gasket for any BMC A series engine with 10 gasket holes, fitted until the introduction of the A plus type which had a bulge in its side where the tensioner was fitted which had 11 holes.
The klinger material is the next generation gasket and although more expensive is the best to use for longevity on those leaky old timing covers.
Green in colour one side and black the other with klingersil markings.