Chrome Water Pump Kit – Fits Yamaha 2-Stroke Outboards (Replaces 6E5-W0078-3A-00)

Chrome Water Pump Kit – Fits Yamaha 2-Stroke Outboards (Replaces 6E5-W0078-3A-00)

This chrome water pump repair kit is designed for Yamaha 2-Stroke 115HP and 130HP outboard motors from the 1993-1996 model years. It serves as a complete replacement solution to restore your engine's cooling system performance and prevent overheating.

Engineered to meet or exceed original equipment standards, this kit provides a reliable alternative to OEM parts, ensuring proper fit and function. It directly replaces Yamaha part numbers 6E5-W0078-3A-00 and 6E5-W0078-3A, as well as Sierra aftermarket parts 18-3372 and 18-3373.

• Installation: Direct replacement design for straightforward installation.
• Material: Features a durable chrome-finished water pump housing.
• Compatibility: Specifically built for a range of Yamaha 2-stroke models.

Part Number Cross-Reference

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

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.

Technical Specifications

Package Contents

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is turned off and cool to the touch.
2. Access the Lower Unit: Drain the gearcase oil. Remove the bolts securing the lower unit (gearcase) to the engine's midsection.
3. Remove the Old Pump: With the lower unit separated, locate and unbolt the water pump housing. Note the orientation of the old parts as you remove them.
4. Clean the Area: Thoroughly clean the mounting surfaces, removing any old gasket material or debris.
5. Install the New Components: Assemble the new kit components in the reverse order of disassembly. Ensure the new impeller vanes are oriented correctly (typically clockwise).
6. Reassemble: Re-install the water pump housing and torque the bolts to the manufacturer's specifications.
7. Reattach Lower Unit: Guide the lower unit back into place, ensuring the driveshaft and water tube align. Secure it with the mounting bolts.
8. Final Checks: Refill the gearcase with fresh oil. Reconnect the battery. Start the engine in a water supply and verify water is exiting the tell-tale outlet.

Troubleshooting & FAQ

How do I confirm this kit fits my specific engine model?
The best method is to match your engine's model and year against our compatibility chart. This kit is specifically for Yamaha 2-Stroke 115HP and 130HP outboards from 1993-1996. You can also use the cross-reference table to check if your existing part number (e.g., 6E5-W0078-3A-00) matches.

What are the signs that my water pump is failing?
Common signs include a weak or non-existent water stream from the "tell-tale" outlet, the engine overheating alarm sounding, or visible damage to the old impeller (cracked, brittle, or missing vanes) during inspection.

How often should a water pump impeller be replaced?
As a general maintenance rule, it is recommended to inspect and/or replace the water pump impeller every 1-2 years or every 100-200 hours of use, depending on operating conditions (e.g., saltwater vs. freshwater).

OEM vs. Aftermarket?
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.

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

What is your warranty and return policy?
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.