Sierra 18-99176 Powerhead Gasket Kit

Sierra 18-99176 Powerhead Gasket Kit

$181.49 $259.49
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Sierra 18-99176 Powerhead Gasket Kit
  • Sierra 18-99176 Powerhead Gasket Kit
Sierra 18-99176 Powerhead Gasket Kit

Sierra 18-99176 Powerhead Gasket Kit

$181.49 $259.49

Sierra 18-99176 Yamaha Powerhead Gasket Kit

Sierra replacement powerhead gasket kit for Yamaha Outboards.

Fits:

  • 60 HP (2001-2005)
  • 70 HP (1994-2009)
  • C70 (2000-2001)
  • P60 (1994-1999)

Gasket Kit Contains:

  • O-ring
  • Oil seal
  • Float chamber gasket
  • 18-3831 Head gasket
  • 18-99125 Intake gasket
  • 18-99128 Exhaust outer cover gasket
  • 18-99129 Exhaust inner cover gasket
  • 18-0826 Drain screw gasket
  • 18-0835 Thermostat cover gasket
  • 18-99130 Upper casing gasket
  • 18-7432 O-ring
  • 18-0849 Fuel pump mounting gasket
  • 18-99143 Valve seal gasket
  • 18-99141 Cylinder cover gasket
  • 18-76690 O-ring

Interchangeable with:

  • Yamaha Outboard
    • 6H3-W0001-02-00

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Sierra Marine Part # SIE-18-99176 Yamaha Outboard Parts
In Stock & Ready to Order Secure nationwide shipping. Final delivery timing is shown at checkout.
SKU: SIE-18-99176
Not sure this is the correct part? Send your engine model, serial number, or photos and our team will verify fitment before you order.
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Marine ApplicationSelected for use in demanding marine environments.
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Fitment & Technical Details

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Marine fitment can depend on model, year, serial range, and prior service history. Confirm those details before installation.

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Match the manufacturer part number, engine or drive model, and serial number range before ordering.

  • Check the current part number and any superseded numbers
  • Verify engine or drive model and serial number
  • Send photos when identification is uncertain
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Technician Tip

Verify before installing.

Compare the removed part, mounting points, electrical connections, and manufacturer numbers before opening sealed packaging or beginning installation.

Quick Specifications

Brand
Sierra Marine
Part Number
SIE-18-99176
Product Type
Yamaha Outboard Parts
Availability
In Stock
Support
Fitment help available
Complete the Repair

Commonly Needed Alongside This Part

Use these quick searches to find related maintenance and installation items. Confirm compatibility before ordering.

More Sierra Marine PartsBrowse related parts from the same manufacturer. Installation HardwareFind fasteners, seals, gaskets, and related supplies. Marine LubricantsProtect components and follow service requirements. Ask a TechnicianLet us help identify everything needed for the repair.
Policies & Support

Everything You Need Before Ordering

Fitment & Part Verification +
Marine parts can vary by engine model, serial range, year, and configuration. Confirm the manufacturer number and application before installation. Our Find My Part team can review serial numbers and photos.
Shipping Information +
Orders are prepared for safe nationwide shipment. Available carrier options, delivery estimates, and costs are calculated during checkout.
Returns & Exchanges +
Please confirm fitment before installation. Returned products must meet the requirements of the current Drydock Marine return policy, including condition and packaging requirements.
Warranty Support +
Warranty coverage varies by manufacturer and product condition. Contact our team with the product and order information for assistance.
Technical Support +
Our marine parts specialists can help review model numbers, serial numbers, interchange numbers, product photos, and related repair items before you order.
The Drydock Difference

Why Buy From Drydock Marine?

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Certified ExperienceKnowledge grounded in hands-on marine service.
Thousands of PartsNew, used OEM, rare, and hard-to-find inventory.
Propeller ExpertsProfessional propeller repair and application guidance.
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Sierra 18-99176 Powerhead Gasket Kit
Sierra 18-99176 Powerhead Gasket Kit$181.49

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