The fuel system on your Duramax is the heart of the vehicle's performance and reliability. This low pressure LML lift pump mounts to the inner frame rail using the supplied sandwich plate mounting system, the suction line connects to the factory suction fitting on top of the fuel module, and the pressure side connects to the factory injection pump feed line on the frame back by the fuel cooler making install quick and easy.The AirDog Raptor RP-4G 150GPH is internally regulated and does not require a return line. This low pressure Duramax lift pump will solve the infamous P0087 & P1093 low fuel rail pressure codes. By supplying your CP4 injection pump with fuel, rather than your injection pump doing most of the work pulling the fuel up from the tank. This positive supply being fed to your CP4 will also add performance, throttle response, and longevity to your vehicle. Due to extra stress on your fuel system from either high mileage and/or additional performance modifications, like a tuner or larger injectors, your injection pump can become weak over time. Resulting in a drop of performance, reliability, and fuel economy. Adjustable Diaphragm Fuel Pressure Regulator. Flow Rates of 150 GPH. Complete Installation Kit (minus tools). The item "AirDog Raptor R4SBC139 RP-4G-150 2015-2016 Fits Chevy Duramax Lift Fuel Pump Sys" is in sale since Saturday, January 30, 2021. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Air & Fuel Delivery\Fuel Pumps & Sending Units".auto" and is located in Litchfield, Illinois. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.