This is an HD cam housing gasket that fits Fiat and Bertone X1/9s with either the 1300 or 1500 engine. This gasket is .031 thick, so it is much more durable than the thin paper gasket that was supplied with these engines. This gasket also helps offset timing belt adjustment after the cylinder head has been surfaced.
This gasket is a must if you have surfaced your cylinder head! This gasket will help keep your camshaft timing correct