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Sierra 18-4064 Marine Piston Kit .030 O.S. for Johnson/Evinrude OMC 60-70 HP Outboard

Manufacturer

Picture for manufacturer Sierra

Part Number

18-4064
14 reviews
Sale Price

$108.26

3 left at this price

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Usually delivered within 2 days

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Product Details

The Sierra International 18-4064 is a .030 over-size (O.S.) replacement piston kit engineered for Johnson/Evinrude OMC 3-cylinder outboard motors in the 60, 65, and 70 HP range. With a bore size of 3.217 inches, this kit is the correct choice when an engine block has been bored .030 over standard during a rebuild. Sierra manufactures this piston to meet or exceed the original equipment specifications it replaces, making it a trusted choice for marine engine rebuilds.

Key Features:

  • Bore Size: 3.217" (.030 Over Standard)
  • Designed for Johnson/Evinrude/OMC 3-cylinder 60 HP (1986–1998), 65 HP Commercial (1987–1995), and 70 HP (1986–1994) outboard engines
  • Manufactured to meet or exceed OEM quality standards
  • Marine-grade construction for durability in demanding outboard applications
  • Kit includes piston, piston rings, wrist pin, and circlips

Replaces / Cross-Reference Part Numbers:

  • OMC / Evinrude / Johnson: 398483, 437412, 5006702
  • Mallory: 9-53434
  • Wiseco: 3072P3, 3172P3

One kit is required per cylinder. Always verify bore size before ordering to ensure the correct oversized piston is selected for your application.

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