It is hard to say base on the picture as they do not provide an detail about this spring?

But did any one use this in om617 overflow valve ?



https://us.bddiesel.com/products/flow-max-pump-pressure-spring-28psi?variant=30073876381760

Pretty sure someone in here makes a custom spring for the mwpump.

Have fun with your 3 hp

__________________

Yep for $35.