Very good point. I once used cheap Napa hosing on the filter and within a few days it started splitting and spewing a thin stream of gas. Ordered OEM hose from Joe immediately. The PSI is high on the fuel system so if you do use the plastic, keep a fire extinguisher nearby.GQ Jay wrote:5/16 is correct, but be veeeeeryyyy careful about the psi rating of the vessel. even some metal in-line fuel filters are not designed for 50+ psi that we need, much less on most plastic screw type ones.