Fuel line size

[Tucker]

I'm upgrading my rigging and bought new fuel line from the primer bulb to motor (150 OX66). Problem is the new stuff has a new USCG rating and the OD is bigger than original. Don't think it will fit through the engine grommet. What is everyone doing? Thanks!

[boats.net]

You can trim the inside of grommet to make room for it, you can use 5/16 inside diameter hose at engine to water separator and 3/8 from separator to fuel tank.