The Yanmar Starter Relay (128990-77550) is a 12-volt electrical relay designed to control power delivery to the starter motor on a wide range of Yanmar marine diesel engines . A correctly functioning starter relay is essential for reliable engine starting and proper starter motor operation. Product Type Starter relay Voltage 12 V OEM / Reference Number 128990-77550 Compatibility Suitable for Yanmar engines: YM Series 2YM15 3YM20 3YM27A 3YM30 3YM30AE 3YM30R JH Series 3JH4E 3JH5AE 3JH5E 4JH4-HTE 4JH4-HTE1 4JH4-TE 4JH4AE 4JH4E 4JH5E
