6G1-44315 Water Pump Impeller Gasket for Yamaha | JLM Marine

Water Pump Impeller Gasket – Fits Yamaha 2-Stroke 6 HP & 8 HP Outboards

This water pump impeller gasket is engineered to fit Yamaha 2-stroke outboard engines rated at 6 HP (1986–2000) and 8 HP (1984–2009). It ensures a reliable seal within the water pump housing, preventing leaks and maintaining optimal cooling performance for your marine engine.

Direct Replacement for: Yamaha OEM part number 6G1-44315-A0.

• Precision-cut gasket designed for exact fitment in Yamaha 6 HP and 8 HP 2-stroke models
• Essential component during water pump impeller service or rebuild
• Single gasket included per package

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

Each package includes:

• 1 × Water Pump Impeller Gasket (6G1-44315-A0)

Installation Guide

1. Disconnect the fuel line and remove the engine cowling to access the lower unit.
2. Remove the lower unit from the engine by loosening the mounting bolts and carefully separating it from the drive shaft housing.
3. Locate the water pump housing on the lower unit and remove the retaining bolts or clips securing the pump cover.
4. Remove the old impeller gasket from the housing mating surface. Clean all surfaces thoroughly to remove old gasket material, debris, and residue.
5. Inspect the water pump housing and impeller for wear, cracks, or damage; replace components as needed.
6. Position the new gasket onto the cleaned surface, ensuring proper alignment with all bolt holes and passages.
7. Reinstall the impeller (if removed) and water pump cover, torquing bolts to manufacturer specifications in a crisscross pattern.
8. Reattach the lower unit to the engine, aligning the drive shaft and water tube carefully.
9. Reconnect the fuel line and replace the engine cowling.
10. Run the engine in a test tank or on the water to verify proper water flow and check for leaks around the gasket.

Troubleshooting & FAQ

Q: How do I confirm this gasket fits my Yamaha outboard?
A: Cross-reference your engine's horsepower, stroke type, and production year with the compatibility table above. Verify your original gasket part number matches 6G1-44315 or 6G1-44315-A0. Use the Yamaha serial number guide linked in the Compatible Engine Models section to identify your engine precisely.

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 operating hours. Always use a new gasket during reassembly to prevent leaks and ensure a proper seal.

Q: What are the signs of a failing or leaking impeller gasket?
A: Symptoms include reduced water flow from the tell-tale (pee hole), engine overheating, visible water leaks around the lower unit, or steam from the powerhead. If you observe any of these signs, inspect and replace the gasket and impeller immediately.

Q: Can I reuse the old gasket if it looks intact?
A: No. Gaskets are designed for single use and lose their sealing properties once compressed. Reusing an old gasket risks water leaks, loss of cooling efficiency, and potential engine damage.

Q: Is this gasket compatible with 4-stroke Yamaha engines?
A: This gasket is specifically designed for Yamaha 2-stroke 6 HP and 8 HP models produced between 1984 and 2009. Always verify fitment using your engine's model and year before ordering.

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.