Crane Cams Multi-Function Performance Ignition, Single Fire Coil & Plug Wire Ki Manufacturer Part No: 8-6101 Increased ignition power and greater reliability Each kit includes: Crane Cams HI-4N ignition, single-fire coil and 8.5mm double silicone, premium quality spark plug wires Maximum spark gap energy for increased HP, RPM and plug firing Increased performance and durability over stock