PerTronix Digital HP Ignition Box Silver Finish 333003 this piston stop features 18mm

this piston stop features 18mm thread for use in Big Block Ford engines

Before starting a cold engine

400 lb Maximum Reading Scale

The 40 amp high capacity ignition switch has an aircraft style flip cover while the start button while the start button and 40 amp accessory switches have water proof boots

exclusive double bearings and all metal agushera design

PerTronix Digital HP Ignition Box Silver Finish 333003 this piston stop features 18mmProduct Description: Ignition Controller Digital HP 3 Step Rev Limiter Sold Individually Pertronix manufactures a broad range of ignition components, including distributor caps and rotors, and related components. They are best known for their point to electric ignition conversion kits, which are available for wide range of domestic and import applications.