i heard from my bud those assy. you buy aftermarket are junk,,, like from bass pro etc...,,he replace several that were a year old on customer boats,i just inspected the factory line on my stratos it looked brand new inside,it had alcohol/ethanol resistance markings on hose,,inspected the bulb,no debris,but the mercury line from bulb to motor was destroyed,,i went to CBC and got 4ft of line for 15.00,,repce water/fuel seperator on my 225 hp,,the efi engine has a inline micro filter to help protect injectors...my lines on the boat were 3/8"...line to engine from bulb 5/16"