Protium D5 Pump Cover:The Protium D5 pump and reservoir combination has three parts, Reservoir, Pump Top and Pump Cover. To create a combo only two parts are actually needed, just the Protium D5 pump top and any Protium Reservoir (this requires the use of the stock D5 retention ring).The Protium D5 Pump Cover holds the pump in position, makes the pump quieter and is an aesthetic feature. We have created a three piece design allowing the pump to be installed first with the retention ring and then the cover to be added after, making installation easier. The rear cover plate has open slots allowing the cable to be threaded into the assembly without removing any connectors. This is a billet alloy component created on a CNC Lathe it has a sandblasted and anodized finish.Quality:Created with a manufacturing process used in industries such as aerospace. All components are carved from a solid block of material. Over engineered for maximum strength and lifespan. Anodised 6061 aluminium for the toughest and most resistant surface available. Stainless steel fasteners for maximum strength and corrosion resistance. Our designs are consistently improved and optimised.Features:CNC milled billet alloy.Just two components to create a full pump and reservoir combination.Three color options: Black, Silver, Black with Silver Rings.Anodized for the most durable and high end finish.Machining after anodizing on the Black With Silver Rings version.Three piece design allows for easy installation.No need to remove the connectors on the pump cables.Anti vibration foam included to silence the pump.Creates an important aesthetic feature and a vast improvement over the stock plastic.Included items:Protium D5 Pump Cover which includes three parts, Retention Ring, Cover, Back (anti vibration foam included).