Exhaust pipe attachment bolt + nut +washer+ clamp bolt assembly, front bottom engine plate bolt , 7/16 inch x overall length approx 5 3/4 inch , engine plate bolt length approx 3-1/8in; standoff length approx 2-58in, for all Norton singles 1949 to 1955? Original part number: 14810 - exhaust pipe attachment bolt E3285 - exhaust pipe attachment bolt nut E5375 - exhaust pipe attachment bolt washer 9328;12343 exhaust pipe clip bolt E3238 - exhaust pipe clip bolt nut - washers
