Direct OE replacement fluid metering head assembly for the Neptune DOS Fluid Metering System. The easy to install head replaces the tubing, roller, and plastic housing head cap. Installs in minutes Replaces wearable tubing The Neptune DOS Replacement Head assembly comes with everything to replace the current fluid metering head on your DOS system. Over time the self-lubricating tubing will start to age, and can also cause excess resistance and unnecessary wear on the motor. What's Included? 1x Head Housing 1x Roller Assembly 1x Tubing Assembly How to Replace Step 1: Hold down the sides of the Dos Head and the clips will release. Remove the pump head and set it aside. Step 2: Pick up your new pump head and slip it right down into the old heads position and the clips should click into place. Test the Pumps rotation with the manual priming buttons.
