[wtm442]

Yes, you want and need the bypass.

Its easy to install the short rubber hose. First, lube up the inside of the hose with a little grease (white lube, etc). Now bend the hose in half so the open ends are almost touching each other. Position hose so that both open ends are touching the metal ends on the intake manifold and water pump.

Now let go. The hose will spead out and automatically suck itself into the installed position. WOW. Did you forget to put the clamps on the hoses? Sometimes its easier to leave them off and then loosen the hose clamps, spread them open and put them on last.