January 1, 2021 at 12:55 PM Official Post #2 Assembly line spark plugs for the Hipo 289 are BF32.-Fred-
January 2, 2021 at 1:35 AM #3 These are assemblyline correct 66 289 hipo park plugs.very hard to find these days and super expensive if you can get someone to sell a set.recently a New Old Stock pack of 10 sold for north of $500usdregardsPHILL BERESFORDMELBOURNE.AUSTRALIA.