Not exactly standard but its a handy thing to have at a glance
OIL FILTERS
The oil filter used on the Norton has metric threads of 16mm X 1.5mm pitch.
It is about 3” in diameter and 3 3/8” tall, I have listed a couple of sizes/makes that fit.
- Ryco - Z93
- Fram - PH7202
- Hasting - LF350
- Ducati - 97 - 900ss --> ask for part number 44440035A