See more: Primary Housing & Covers
Fits 4 Speed Big Twin 1965-1986 and 1991-2003 Sportster, Magnetic type, chrome, Colony (OEM 60346-65, 60348-65A)
These plugs will work on either OEM or Zodiac inner primary covers. The magnet in the drain plug prevents small pieces of metal, coming from primary chain wear, entering the lubrication system of your engine.