How many parts do I need to create a D5 pump res combo?
The Protium D5 pump and reservoir combination has three parts, Reservoir, Pump Top and Pump Cover. To create a combo only two parts are actually needed, just the Protium D5 pump top and any Protium Reservoir (this requires the use of the stock D5 retention ring).
Alternatively, you can purchase our Protium D5 reservoir combo - 150mm, there are 2 options Acetal & Polished. You can purchase them here