I cannot get the Autolite 25 copper core spark plugs to thread into my P heads. But they thread just fine into the old stock heads.
I've read I need the 764 or 104 version. But the part number on the box just says 25.... How can I be sure I'm getting the right ones?
Ps... I'm getting them from autozone. No time to order from anywhere.
I've read I need the 764 or 104 version. But the part number on the box just says 25.... How can I be sure I'm getting the right ones?
Ps... I'm getting them from autozone. No time to order from anywhere.