Yanmar 128990-77550 Relay (Genuine OEM)

Description

The Yanmar 128990-77550 is a genuine OEM 12V magnetic starter relay for Yanmar 2YM, 3YM, 3JH and 4JH series marine diesel engines.

Supersession

This part replaces the earlier 120270-77511. If your manual or a previous invoice lists that, this is the current replacement.

Fitting

This relay is a known failure item and a smart spare to keep aboard, since a failed starter relay leaves you unable to crank.

Check your fitment

The engine models listed in the product specifications are a guide only. Always confirm against the parts catalogue for your engine’s model and serial number before ordering. If you are unsure, send us your engine plate details and we will check it for you.

Genuine Yanmar parts

We stock genuine Yanmar OEM parts, not pattern copies. If you need help identifying the right part for your engine, or want to book a service, get in touch.