Sierra 18-4415 Powerhead Gasket Set

Sierra 18-4415 Powerhead Gasket Set

$84.99 $111.99
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Sierra 18-4415 Powerhead Gasket Set
  • Sierra 18-4415 Powerhead Gasket Set
Sierra 18-4415 Powerhead Gasket Set

Sierra 18-4415 Powerhead Gasket Set

$84.99 $111.99

Sierra 18-4415 Powerhead Gasket Set for Yamaha C85, CV85 Outboards

Sierra replacement powerhead gasket set for Yamaha Outboards.

Fits: Yamaha C85 (1991), CV85 (1989-90)

Interchangeable with:

  • Yamaha Outboard
    • 688-W0001-00-00
    • 688-W0001-A0-00
  • Mallory
    • 9-64407

Gasket Set Contains:

  • Gasket x2
  • Air cleaner gasket
  • O-ring x3
  • Oil seal x2
  • 18-3805 Head gasket
  • 18-99098 Intake gasket
  • 18-0840-1 Float chamber gasket
  • 18-0826 Drain screw gasket
  • 18-0767 Water jacket cover gasket
  • 18-0844 Thermostat cover gasket
  • 18-0847 Exhaust cover gasket
  • 18-0849 Fuel pump mounting gasket
  • 18-99151 Upper casing gasket
  • 18-76690 O-ring

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Sierra Marine Part # SIE-18-4415 Yamaha Outboard Parts
In Stock & Ready to Order Secure nationwide shipping. Final delivery timing is shown at checkout.
SKU: SIE-18-4415
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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  • Verify engine or drive model and serial number
  • Send photos when identification is uncertain
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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-18-4415
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.
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Thousands of PartsNew, used OEM, rare, and hard-to-find inventory.
Propeller ExpertsProfessional propeller repair and application guidance.
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Sierra 18-4415 Powerhead Gasket Set
Sierra 18-4415 Powerhead Gasket Set$84.99

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