Front chaincase inner portion attachment stud to engine plate, assembly, + nut + washers Nortons, 1933 -1938 ONLY for ES2, CJ, 30 , 40. Requires bolt 3423 for outside part Original part numbers. 3422 - Front chaincase inner portion attachment stud (for engine plate) 3421; E3223 - Front chaincase inner portion attachment nut x1 3424; 10914; A2/275 - Front chaincase inner portion attachment bolt washer x 1