Genuine Yamaha Yamaha case s20 ultra
About this part
Looking for Yamaha part YMEFCAS98000? This is the OEM item described as “Yamaha case s20 ultra” and is manufactured to Yamaha specifications for dependable operation, consistent quality, and straightforward installation.
Why choose genuine Yamaha?
Choosing genuine Yamaha OEM helps avoid problems often seen with pattern parts: mis-sized sealing profiles, inconsistent rubber compounds, poor plating, and connectors that don’t lock correctly. On a marine engine, those small differences can become big issues.
Notes for this part
If you’re unsure it’s correct for your engine, confirm using your exact model code/serial range and the relevant parts diagram before ordering.
This is a genuine Yamaha OEM component intended for service and repair work on compatible Yamaha products. OEM specification supports correct fit, correct function, and consistent quality.
Warranty
New genuine parts include a 1-year warranty (correct application and installation required).
Ordering tips
Ordering tip: when buying multiple items, it’s worth reviewing the same diagram section for related gaskets and seals so everything arrives together.