This original Yanmar multi-rib alternator belt is used on Yanmar 3YM30 and 3YM30AE marine diesel engines fitted with a 120A alternator. The belt drives the alternator and should be checked regularly for wear, cracking, glazing or loss of tension. Replacement is recommended during service or when the belt shows visible signs of wear. Suitable for Yanmar 3YM30 engines from serial number E20848 and for the 3YM30AE . Engine compatibility Suitable for the following Yanmar marine diesel engines: 3YM30, from serial number E20848 3YM30AE Product details Brand: Yanmar Part type: Alternator belt / multi-rib belt Part number: 128990-77580 Condition: New Application: Service part Alternator type: 120A alternator
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