Aeroflow Performance has designed these compact distribution blocks for universal applications. Such as a vacuum block distribution to plumb up additional vacuum ports for accessories like MAP sensors, boost gauges, blow off valves, or hooking up individual throttle bodies. Coolant lines for header tanks or LS steam pipe lines and nitrous oxide lines. Available with 1 port in and 4 ports out and 1 port in and 6 ports out, these ports are all 1/8″ NPT. The compact design measures just 60mm length, 35mm width and 12.70mm thickness.