Norton single cylinder carb manifold connector (spigot) screw in type, 1 1/8 inch diameter mounting boss. Requires lock nut. Polished stainless steel: 2-7/8 inch (73mm) overall length; 1-1/8 inch (28.5mm) diam mounting boss; 1-inch (25.4mm) bore opening to 1-3/32 inch (27.7mm); 1-3/8 inch thread for Norton singles. Suit Norton side valve motors.
Original part number:F2/154 - carburettor adaptor with lock nut
