This 6 pin ignition CDI was originally manufactured for the Yerf-Dog 4x2 utility vehicles (Scout, Rover, or Mossy Oak). It will not work with Yerf-Dog go karts. Dimensions: 3-3/4" x 2-1/8" x 1". * This was originally manufactured for the Yerf-Dog 4x2 utility vehicles (Scout, Rover, or Mossy Oak).