Here's the deal. I use most all Original Equipment Manufacturers fuel lines and primer bulbs. Why?
Cause there better. Much. I know, there freaking expensive and overpriced but there better.
Honda and Yamaha got the best, No doubt. I got 9 years on my Honda 90 fuel line and primer bulb thats exposed from the seperator to the motor, and its still going. Good stuff, And you can make the small diameter hose even work on a 3/8ths barb. On Johnson/Evinrude, I use their fuel lines. Hoses don't stiffen up in a year, and I rarely see there primer bulbs fail. Merc/Quicksilver primer bulbs are good, the fuel line is ok, not my favorite.
Capt.Matt