PLEASE NOTE: Delays in processing orders. Orders placed between Thursday 22 January and Monday 09 February will be processed 10 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