Sierra 18-5510 Inboard StarterSierra replacement outboard starter for Mercruiser Stern Drives.Application: 4.5L and 6.2L Non-GM EnginesSuperior connection between the solenoid and the commutator brushesUpdated planetary gear and clutch gear spring to maximize life span and reliabilityUpdated solenoid design provides optimum performance by utilizing higher quality materialsNew solenoid also offers an increased battery terminal length for easier installationSeals are strategically integrated to reduce opportunities for water intrusionInterchangeable with:Mercruiser Stern Drive50-8M0095471