5/8″-18 threaded; with o-ring. Custom style replacement for 704 hex head timing & drain plugs and OEM style replacement for OEM 720 allen head timing plug.
Paughco, timing/drain plug. OEM style allen. Chrome
€35.30
Timing plug: 38-99 Big Twin (Excl. Twin Cam); 52-03 XL Sportster; 38-73 45″ Flathead (NU). Oil tank: L1981 FLH 80 Classic; 54-81 K; XL Sportster (NU). Foot lever & bracket assembly rear brake: 80-82 FXWG (NU).