Norton single cylinder flanged carb manifold, screw in type, 1-1/8 inch bore, alloy

Carburettor adaptor / manifold connector, screws into head to replace spigot mount carb with flange mount carb. Suit Norton overhead valve head.  Aluminium, Overall length:  2-9/16 inch; OD mounting boss 1-1/8 inch, Threaded end 1-3/8 inch 26tpi, hole centres 2 inch, threaded 5/16 inch BSW.  Allows monobloc or concentric carb to be fitted to pre 1955 heads
Original part number
 - Carburetter (sic) Adaptor