Description
The Yanmar 24321-000950 is a genuine OEM O-ring for Yanmar 6AY engines and SD20 / SD30 saildrives.
Why it matters
A small seal that causes problems out of all proportion to its price when it hardens or takes a set. Cheap to keep as a spare and to replace while you already have the assembly apart.
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.




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