Gasket air filter to Carburettor Healey and MG 1-1/2" SU. This gasket is near identical to 102488 used on TR2-3 which can be used instead and is much cheaper.
Revington TR information: Gasket air filter to Carburettor TR2-3 1-1/2" SU. This gasket is near identical to 12G2125 which can be used in an emergency.