Sierra 18-3477 Yamaha Water Pump Repair Kit

Sierra 18-3477 Yamaha Water Pump Repair Kit

$128.99 $183.99
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Sierra 18-3477 Yamaha Water Pump Repair Kit
  • Sierra 18-3477 Yamaha Water Pump Repair Kit
Sierra 18-3477 Yamaha Water Pump Repair Kit

Sierra 18-3477 Yamaha Water Pump Repair Kit

$128.99 $183.99

Sierra 18-3477 Yamaha Water Pump Repair Kit - Replaces 6AW-W0078-00-00

Sierra replacement water pump repair kit for Yamaha Outboards. Does not include housing.

Fits: F300 / LF300 (2007-09), F350 / LF350 (2007-19)

Interchangeable with:

  • Yamaha Outboard 
    • 6AW-W0078-00-00

Repair Kit Contains:

  • 18-3028 Woodruff key
  • 18-0421 Outer wear plate
  • 18-0452 Water pump gasket
  • 18-7471 Outer O-ring
  • 18-3457 Impeller Cup Insert
  • 18-8925 Impeller
  • 18-7483 O-Ring
  • 18-0256 Bolt
  • Pin Dowel

California Residents: warning sign WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov
Sierra Marine Part # SIE-18-3477 Yamaha Outboard Parts
In Stock & Ready to Order Secure nationwide shipping. Final delivery timing is shown at checkout.
SKU: SIE-18-3477
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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Product Confidence

Built for the Job. Backed by Drydock.

Marine ApplicationSelected for use in demanding marine environments.
Direct ReplacementUse the part number and fitment details to confirm your application.
Technician SupportQuestions before installation? Our team is ready to help.
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Fitment & Technical Details

Order With Confidence

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

Will This Part Fit?

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  • Check the current part number and any superseded numbers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-18-3477
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.
Nationwide ShippingParts supplied to boaters and repair shops across the country.
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Real Human SupportTalk with people who understand boats, engines, and parts.
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Sierra 18-3477 Yamaha Water Pump Repair Kit
Sierra 18-3477 Yamaha Water Pump Repair Kit$128.99

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