MSD 6425 Digital 6AL ignition control. Features red finish, universal fit for performance vehicles, includes rev limiter, ensures high-output ignition, sold as each.
MSD 6421 6AL-2 ignition control. Features red finish, universal fit for performance vehicles, includes rev limiter, ensures reliable ignition, sold as each.
MSD 6520 Digital 6-Plus ignition control. Features programmable timing, universal fit for performance vehicles, ensures high-output ignition, sold as each.