Main bearing bush for marine diesel engines Beta Marine Beta 50 and Nanni N4.50. Direct OEM replacement, suitable for crankshaft bearing revision and maintenance. This is the OE series 15221 / 17311 version — there is also a version in the 1A091 series, so please check your OE number.
✔️ Direct OEM replacement
✔️ OE series 15221 / 17311 version
✔️ Suitable for revision and maintenance
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