6E0-44315-A0 Water Pump Impeller Gasket for Yamaha F4 | JLM Marine

Water Pump Impeller Gasket 6E0-44315-A0 – Fits Yamaha 4HP & 5HP Outboards

This water pump impeller gasket is engineered to fit Yamaha 4HP and 5HP outboard engines, covering both 2-stroke models from 1984–2002 and 4-stroke F4 models from 1999–2008. It ensures a reliable seal within the water pump housing, preventing leaks and maintaining optimal cooling system performance.

Direct Replacement: Yamaha OEM part number 6E0-44315-A0.

• Precision-cut gasket for secure water pump seal
• Compatible with both 2-stroke and 4-stroke Yamaha engines
• Essential component for water pump maintenance and rebuild

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

• 1 × Water Pump Impeller Gasket (6E0-44315-A0)

Installation Guide

1. Disconnect the fuel line and remove the engine cover to access the lower unit. Ensure the engine is completely cool before starting work.
2. Drain the lower unit gear oil completely by removing the drain and vent screws.
3. Disconnect the shift linkage and unbolt the lower unit from the mid-section. Carefully pull the lower unit away from the drive shaft.
4. Remove the water pump housing bolts and lift off the housing to expose the impeller and old gasket.
5. Carefully remove the old impeller gasket, cleaning all gasket surfaces thoroughly to ensure no debris or old gasket material remains.
6. Position the new impeller gasket (6E0-44315-A0) onto the water pump base, ensuring proper alignment with all bolt holes.
7. Reinstall the impeller (lubricate with glycerin or soapy water) and water pump housing, ensuring the gasket stays in place.
8. Torque the water pump housing bolts to manufacturer specifications in a cross-pattern sequence.
9. Reattach the lower unit to the mid-section, reconnect the shift linkage, and verify proper gear engagement.
10. Refill the lower unit with the correct grade and amount of gear oil, then reinstall drain and vent screws.
11. Reconnect the fuel line and test the cooling system by running the engine in a test tank or on muffs. Verify strong water flow from the tell-tale indicator.
12. Reinstall the engine cover and perform a final visual inspection for leaks or unusual sounds.

Troubleshooting & FAQ

Q: How do I confirm this gasket fits my Yamaha outboard?
A: Check the compatibility table above for your engine's HP, model (F4 or standard), stroke type, and year range. You can also cross-reference the OEM part number 6E0-44315-A0 in your service manual or Yamaha parts diagram.

Q: How often should I replace the water pump impeller gasket?
A: Replace the gasket every time you service or replace the water pump impeller, typically every 2–3 years or 200–300 hours of operation, whichever comes first. Always use a new gasket—never reuse the old one.

Q: What are the signs that my water pump gasket is failing?
A: Common symptoms include water leaking from the lower unit seam, reduced water flow from the tell-tale indicator, engine overheating, or visible corrosion around the water pump housing. If you notice any of these, inspect and replace the gasket immediately.

Q: Can I reuse the old gasket if it looks intact?
A: No, reusing gaskets can lead to improper sealing, leaks, and potential engine damage. Always install a new gasket during water pump service to ensure a reliable seal.

Q: Is this an OEM or aftermarket part?
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.