Water Pump Repair Kit – Fits Yamaha 115/130 HP 2-Stroke (Replaces 6E5-W0078-A1-00)

Vendor: JLM Marine
Availability: In Stock
Product Type: Water Pump Impeller Kit
$61.50
$65.00
$61.50
Subtotal: $61.50

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Water Pump Repair Kit – Fits Yamaha 115/130 HP 2 - Stroke (Replaces 6E5 - W0078 - A1 - 00) - JLM Marine Boat Parts Limited

Water Pump Repair Kit – Fits Yamaha 115/130 HP 2-Stroke (Replaces 6E5-W0078-A1-00)

$65.00 $61.50

Water Pump Repair Kit – Fits Yamaha 115/130 HP 2-Stroke (Replaces 6E5-W0078-A1-00)

$65.00 $61.50

Water Pump Repair Kit – Fits Yamaha 115/130 HP 2-Stroke (Replaces 6E5-W0078-A1-00)

This water pump repair kit provides the necessary components to service the water pump on Yamaha 2-Stroke 115–130 HP outboards manufactured between 1984 and 1992, including C115 and 130 models.

It serves as a direct replacement for Yamaha part number 6E5-W0078-A1-00 and Sierra part number 18-3434.

  • Complete Kit: Includes all essential gaskets, o-rings, and the impeller for a full replacement.
  • Direct Fitment: Engineered as a direct replacement part, ensuring proper fit and function.
  • Important: Water pump housing is not included with this kit and must be purchased separately if needed.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Yamaha 6E5-W0078-A1-00
Sierra 18-3434

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Yamaha 115 115 2-Stroke 1984-1992 6E5-W0078-A1-00 Standard models
Yamaha C115 115 2-Stroke 1991-1992 6E5-W0078-A1-00 Commercial models
Yamaha 130 130 2-Stroke 1988-1992 6E5-W0078-A1-00 Standard models

Technical Specifications

Specification Value
Product Type Water Pump Repair Kit
Installation Direct OEM Replacement
Housing Material Not Included (Housing Sold Separately)
Operating Temperature Marine Environment
Warranty Varies by Manufacturer
Other Technical Attributes Includes all necessary components for complete water pump impeller replacement

Package Contents

  • 1 x Water Pump Gasket (6E5-44315-A0-00)
  • 1 x Cartridge Insert (6E5-44322-00-00)
  • 1 x Cartridge Outer Plate (6E5-44323-00-00)
  • 1 x Impeller (6E5-44352-01-00)
  • 4 x Washers (90209-08M02-00)
  • 1 x Woodruff Key (90280-04M05-00)
  • 1 x O-Ring (93210-37M67-00)
  • 1 x O-Ring (93210-86M38-00)
  • 2 x Dowel Pins (93606-12019-00)
  • 4 x Bolts (97080-08045-00)
  • Note: Housing (6E5-44311-00-00) is NOT included and must be purchased separately.

Installation Guide

  1. Safety First: Disconnect the engine's battery before starting work.
  2. Access the Pump: Remove the lower unit (gearcase) from the outboard's midsection.
  3. Disassemble: Carefully unbolt and remove the old water pump housing. Note the orientation of the old impeller vanes.
  4. Remove Old Parts: Take out the old impeller, gaskets, wear plate, and key.
  5. Clean Surfaces: Thoroughly clean all mating surfaces, removing any old gasket material or corrosion.
  6. Install New Components: Place the new gasket, outer plate, and cartridge insert into position.
  7. Install Impeller: Slide the Woodruff key onto the driveshaft and then install the new impeller, turning the shaft clockwise to bed the vanes correctly.
  8. Lubricate: Apply a light coat of marine grease to the inside of the new housing and impeller.
  9. Reassemble: Reinstall the water pump housing and tighten the bolts to the manufacturer's specified torque.
  10. Reattach Lower Unit: Reinstall the lower unit onto the outboard.
  11. Test: Reconnect the battery. Start the engine using a water supply (flushing muffs or in water) and confirm a steady stream of water from the tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this fits my engine?

A: This kit is specifically for Yamaha 115-130 HP 2-Stroke outboards from 1984-1992. Please review the "Compatible Engine Models" table to verify your specific model and year. We also recommend using the Yamaha Serial Number Guide to identify your engine with certainty.

Q: Does this kit include the water pump housing?

A: No, the water pump housing (part # 6E5-44311-00-00) is not included in this kit. It must be purchased separately if your existing housing is cracked, warped, or excessively worn.

Q: What are the signs my water pump impeller is failing?

A: The most common sign is a weak, inconsistent, or non-existent water stream from the "tell-tale" cooling outlet. Other indicators include engine overheating alarms, steam from the exhaust, or finding broken vanes on the old impeller during inspection.

Q: How often should I replace the water pump kit?

A: For preventative maintenance, we recommend replacing the water pump impeller and gaskets every 1 to 2 years, or every 100-200 hours of use. This interval can be shorter if you frequently operate in sandy, silty, or saltwater conditions.

Q: OEM vs. Aftermarket?

A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?

A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?

A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

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