Air Lift's 3H and 3P systems have a great warranty against manufacturer defects but if you somehow damage your manifold / ECU in a way that isn't covered under warranty, you'll have to purchase a new unit. This replacement manifold / ECU works with both 3H and 3P systems. Just Select 1/4" or 3/8" Manifold.
This is a replacement unit
This unit will only work with Air Lift 3H and 3P systems