Norton single cylinder carb flanged / threaded manifold connector, 1 1/16 inch diameter bore. Required lock nut, Aluminium: 2-9/16 inch (65mm) overall length;hole centres 2 inch threaded 5/16 inch BSW; bore 1-1/16 inch (27mm); 1-3/8 inch thread for Norton singles. Suit Norton singles Used before manifold cast into the head.
Original part number:K4/154 - carburettor adaptor with locknut
