Bosch rate them at 3.7 ltr/min @ 73psi @ 13.5 volts, = 222 ltr/hour



but 044's i've tested

at 13.0 - 13.4 volts at pump, @ 73 psi = 4.1-4.6 ltr/min = 246-276 ltr/hour




A bullet filter is fine, but best to put post pump, then it wont restrict the flow at all unless blocked.