4. Joe sends a small rubber section that (I presume, as I did not try) connects to the crankcase to act as an attachment point for the thick hose that he also provides. Not sure if this is the case on the '15 and older, but my '16 has a sensor of some sort (not sure what it does, but wanted to retain it) at that point that I did not want to delete; I simply removed the sensor from the factory hose assembly, as pictured, and attached Joe's new hose to it (fits perfectly). I used my own clamp at that point as well for added security.
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