PLEASE NOTE: Delays in processing orders. Orders placed between Tuesday 21 January and Monday 10 February will be processed 11 February.
Sump drain plug and washer for Nortons singles and twins 1948 on. Models 7, 1 ,16H, ES2, 18; chaincase drain plug later featherbed twins; oil tank drain plug twins 1955+; gearbox level plug. Thread is 28tpi BSP NOT BSCY AND NOT UNF Original part number: 13765 - crankcase drain plug; (Post 1948 with plug under sump) x 1 13881- drain plug washer (washer changed in 1957 but this one will still fit) x 1 13833 - drain plug washer x 0