Replacement electric fuel pump or boost pump for MerCruiser For 50 years Sierra has been producing parts engineered to meet or exceed the specifications of marine engine manufacturers and has gained the confidence of engine manufacturers and boat builders to a point of supplying them with OEM parts. Boaters can be rest assured a Sierra part will fit and restore function. This electric inline fuel pump is designed to fit many MerCruiser engines and was used as a boost pump on some 5.0L and larger engines. This 12V pump produces 6-8 psi and 25 gph required by manufacturers. Both IN and OUT flow ports are threaded to receive fuel hose fittings. Key Features Engineered to meet or exceed OEM specifications Replaces MerCruiser and Mallory pumps Backed by SeaStar Solutions Two-Year Limited Warranty See our Engine Parts Selector to confirm this is the right pump (or to find the correct one) for your application Specifications Application: Gasoline inboard Pressure: 6-8 PSI