18-7121 - O-Ring 25-35029, 308621

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Part Number

Sierra Marine

Replaces OEM 0308621.

18-7121 O-Ring

Replaces: 308621, 25-35029

  • I.D.- 3.100
  • Width- .135
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Sierra Marine O-ring is equivalent to parts:

Sierra Marine is the market leader for aftermarket marine engine parts. Sierra products cover every major engine brand. Sierra offers a comprehensive product line and an unsurpassed customer satisfaction warranty covering parts and labor.