Ultra 6A Ignition Box, Black Features: *Plug and Play upgrade to current installations with a 6201, MSD 6A *New processor and board design provide a highly efficient ignition, minimal heat and max spark energy with less current draw *60% smaller and 50% lighter than the MSD Digital 6A (688 grams vs 344 grams) *High rpm operation and maximum output using the Blaster HVC, PN 8252 or HVC II, PN 8253 *Powerful capacitive discharge of multiple sparks improves performance, and ensure complete combustion *Consistently high spark energy of 135mJ to 150mJ for every firing, from idle to redline rpm *Easily installs on 4, 6, 8-cylinder engines with distributors *Operates on most 7 to 28-volt electrical systems *Connects to points and magnetic pickups *Fully protected against an open coil, shorted coil & open load |