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Sierra Pinion Nut Adapter For Mercury Marine Engine, Sierra Part #18-9857

Item # 750415
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Ships within 5 - 6 business days

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  • Sierra Part #18-9857

  • Pinion nut adapter

  • For Mercury Marine engine

Product Summary 

Sierra pinion nut adapter for Mercury Marine engine. Holds pinion nut when removing pinion gear and drive shaft on MC-I, R-MR, and Alpha I drive units. Sierra Part #18-9857.

OEM Part Number: