Motorcycles and Scooters

NORTON

850cc

CC Model Standard Plug Gap (mm) Iridium Power
850cc Commando Interstate W22EP-U 0.6 IW22
850cc Commando Roadster W22EP-U 0.6 IW22

750cc

CC Model Standard Plug Gap (mm) Iridium Power
750cc Commando Fastback, Commando S/Commando Roadster W22EP-U 0.6 IW22

745cc

CC Model Standard Plug Gap (mm) Iridium Power
745cc Atlas/Ranger P11A W24EP-U 0.6 IW24

650cc

CC Model Standard Plug Gap (mm) Iridium Power
650cc Dominator/Mercury/Manxman W22ES-U 0.6

600cc

CC Model Standard Plug Gap (mm) Iridium Power
600cc 19R/19F/77/99OHV W20ES-U 0.6

596cc

CC Model Standard Plug Gap (mm) Iridium Power
596cc Big 4 SV W20ES-U 0.6

500cc

CC Model Standard Plug Gap (mm) Iridium Power
500cc All Models 19.0 mm (3/4”) Heads W22ES-U 0.6
500cc ES2 OHV 12.7mm (1/2”) Heads W22FS-U 0.6 IWF22
500cc 19.00 mm (3/4”) Heads W22ES-U 0.6
500cc 88SS (OHV) W22ES-U 0.6
500cc 16H SV W20ES-U 0.6

499cc

CC Model Standard Plug Gap (mm) Iridium Power
499cc 30 (OHV) W24ES-U 0.6 IW24

490cc

CC Model Standard Plug Gap (mm) Iridium Power
490cc 500T (OHV) W20ES-U 0.6

384cc

CC Model Standard Plug Gap (mm) Iridium Power
384cc ES400 W22ES-U 0.6

350cc

CC Model Standard Plug Gap (mm) Iridium Power
350cc Manx 30 W31ES-ZU 0.6 IW31
350cc 40 (OHV) W24ES-U 0.6 IW24
350cc 50 (OHV) Twin Navigator W22ES-U 0.6

348cc

CC Model Standard Plug Gap (mm) Iridium Power
348cc Manx 40 W31ES-ZU 0.6 IW31

250cc

CC Model Standard Plug Gap (mm) Iridium Power
250cc Jubulee OHV W22ES-U 0.6
250cc Rotary Engine Commander, F1 U24ES-N 0.6 IU24

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