Mechanical fuel pump for MerCruiser and OMC engines 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 assured a Sierra part will fit and restore function. This mechanical pump replaces the pump found on 4 cylinder 2.5L, 3.0L and 3.7L engines. It produces 6-8 PSI and meets manufacturers specifications for approved applications. Included mounting gasket makes installation straight forward. Key Features Engineered to meet or exceed OEM specifications Includes mounting gasket for easy installation Replaces MerCruiser 8M0073435, Mallory 9-37422 and many others Backed by SeaStar Solutions Two-Year Limited WarrantySee our Engine Parts Selector to confirm this pump is right (or to find the correct one) for your application. Fits MerCruiser 42725A3 861676T09 8M0073435 861676A1 Fits Mallory 9-35422 Fits OMC 509407