PLEASE NOTE: Delays in processing orders. Orders placed between Tuesday 21 January and Monday 10 February will be processed 11 February.
Inlet and exhaust top valve collar (valve cap) , suit Norton OHV Model 18 and ES2 engine, 1931 to c1958. Original part numbers: 3078; A3/147; H3/147; 16133; - valve spring cup top (inlet or exhaust) match to A3/148