Bulkhead/ Fillport Fitting
Bulkheads pass the loop through a case panel, and fillports put a fill point on top of the case. Here: Alphacool G1/4 bulkhead connectors in standard and short versions, Alphacool Apex fillports, and female-to-female passthroughs from Barrow and Thermal Grizzly DeltaMate. Put the fillport at the highest point of the loop.
