MSD Blaster Coil-On-Plug Ignition Coil Pack - Red - Ford Modular - Set of 8 SP115BK Locker is a fully automatic

Locker is a fully automatic locking differential that delivers spool-type traction on the straightaways and automatically unlocks in the corners

Tether chain keeps secondary retainer clip attached to the adapter so it is always handy (installed retainer can also be safety wired to adapter for additional safety)

No Cutting Of Factory Exhaust Required

Less Amp/Power Draw

MSD Blaster Coil-On-Plug Ignition Coil Pack - Red - Ford Modular - Set of 8 SP115BK Locker is a fully automaticThe housing and installation of our Ford Blaster Coil on Plugs are the same as the factory, but that's where the similarity ends. Inside the MSD red housing, engineers spec'd better material to assemble the primary and secondary windings. The Coil on Plug design puts the spark energy right out of the coil and across the plug gap to improve the combustion and output of the engine. MSD Ford Blaster Coil On Plug 82448 (Set of 8) Improved High RPM