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Sierra Upper Gear Kit For Mercury Marine Engine, Sierra Part #18-6351

Item # 749547
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Ships within 5 - 6 business days

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  • Sierra Part #18-6351

  • Upper gear kit

  • For Mercury Marine engine

Product Summary 

Sierra upper gear kit for Mercury Marine engine. For Alpha I Gen II (1998 and up), 0L100040 and up, 1.47:1 ratio (20-22 teeth) applications. Sierra Part #18-6351.

OEM Part Number: