Bosch 6723 Spark Plug. Autolite XP605 Spark Plug NGK 3186 Spark Plug. V6 GAS OHV Naturally Aspirated Do Not Gap, Gap is Preset. l4 GAS SOHC Naturally Aspirated Do Not Gap, Gap is Preset. Ford Mustang 1979-1986 2.3L 140Cu.
These plugs were used to replace AC Delco units in an '01 Cavalier. After about 5,000mi, have no issues. Engine starts instantly, hot or cold and runs SMOOTH. I would DEFINITELY buy again.