The idea is simple enough although many hose and fitting establishments will have no idea what you are talking about when you speak with them. In the great NW we are lucky to be in close proximity to SwageLock the fitting experts.
The SwageLock Part number you need is B 810-1-12. The B stands for brass and cost under $8 each. When you get your fittings you will notice that your 3/8'' ID Pex fuel line doesn't slide all of the way through the fittings. You will need to bore out the fitting with a 1/2'' drill bit. If you have access use a drill press. I used a cheap vise and an electric drill. You will have to drill through a good amount of fitting, but it is brass and should go quickly. The drill method did produce some unsavory kickbacks.
It's rumored that the best deal on other fittings can be found at www.plumbing.com. You will need 4ea: 3/4 NPT (Pipe Thread) x 3/4 hose barb, 3/4 NPT x 5/8 hose barb.
