As an Amazon Associate, we earn from qualifying purchases. DOS Replacement Pump Head - Bulk Reef Supply Neptune Systems . 210187 Gallery Attributes Brand name, Manufacturer name, ManufacturerNeptune Systems Extra Product NameDOS Replacement Pump Head - Bulk Reef Supply extendedQty, qtyInStock0 keywordssaltwater aquarium supplies, reef aquarium supplies, marine fish tank, live rock, GFO, protein skimmers, two part dosing, aquarium carbon, fish food, RO/DI Systems, ecotech marine, aquaillumination, neptune systems, kessil, innovative marine moq, multiple, tierMinQty11 MPN, SKU210187 qtySourceupdateFromUrlEntry snippetDirect 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 o tierPrice136.99 Distributor offers SellerSKUMOQIn stockMultiplePrices bulkreefsupply.com210187111 @ $36.99