Valve cover securing knurled nut and stud assembly for Norton 16H and Big 4 (Model 1) , valve cover. Suits Norton models from 1936 to 1955? May suit the earlier models with part number 9055 which was listed as a combined part Original part number: 8874; A2/72 - Valve cover securing stud 8875; A2/73 - Valve cover securing knurled nut
