Fuel feed assembly?

[BQUICK]

6R5-24408-00-00 FUEL FEED ASSY on P150TLRS. What does it do? It's after the fuel filter, inline. Seems to be only listed for PRO-V 150 not reg 150 or 200.

[boats.net]

It's a check valve. Helps to keep fuel from draining back when shut off.

[BQUICK]

Why would it only be used on PRO V motors?

[boats.net]

It is used and several other models mainly used on larger hp models.

[BQUICK]

Does it help restart after sitting? Would it make sense to put it on a motor that didn't come with it?

[rodbolt17]

no.
I typically gut them.
the oring tends to swell and cause issues.