Reply To: Gv650 coolant drain bolt size. Aug 19, 2021 at 3:42 PM #6118 EdParticipant Ok,i worked out its a m8 bolt size with a thread pitch of 1.5. Aug 19, 2021 at 3:42 PM #6118 EdParticipant Ok,i worked out its a m8 bolt size with a thread pitch of 1.5.
