63D-44316-00 Water Pump Impeller Gasket for Yamaha 40 50 60 C40 C50 P40 F40 F50 F60 | JLM Marine

Water Pump Impeller Gasket – Fits Yamaha 40-60 HP Outboards (2-Stroke & 4-Stroke)

This impeller gasket is designed to fit Yamaha 2-stroke and 4-stroke outboard engines ranging from 40 to 60 HP, including C40, C50, P40, F40, F50, and F60 models manufactured between 1995 and 2009. It ensures a proper seal within your water pump assembly for reliable cooling performance.

Direct Replacement for OEM Part Number: 63D-44316-00

• Essential component for water pump maintenance and rebuild
• Compatible with both 2-stroke and 4-stroke engine configurations
• Easy installation during routine service intervals

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 × Impeller Gasket (63D-44316-00)

Installation Guide

1. Disconnect the fuel line and remove the lower unit from the outboard motor according to your engine's service manual.
2. Remove the water pump housing and carefully extract the old impeller and gasket. Inspect all components for wear or damage.
3. Clean all mating surfaces thoroughly to remove old gasket material, debris, and corrosion.
4. Position the new impeller gasket (63D-44316-00) onto the cleaned surface, ensuring proper alignment with mounting holes.
5. Install the impeller with blades oriented in the correct rotation direction (refer to your service manual).
6. Reassemble the water pump housing, ensuring all bolts are tightened to the manufacturer's specified torque.
7. Reinstall the lower unit onto the outboard motor, reconnect the fuel line, and verify all connections are secure.
8. Start the engine and confirm that water is discharging properly from the tell-tale outlet, indicating correct water pump operation.

Troubleshooting & FAQ

Q: How do I confirm this gasket fits my Yamaha outboard?
A: Check the Compatible Engine Models table above for your engine's HP, stroke type, and year range. You can also verify the OEM part number (63D-44316-00) against your engine's parts diagram using the Yamaha parts catalog link provided.

Q: How often should I replace the water pump impeller gasket?
A: Replace the impeller gasket every time you service or replace the water pump impeller, typically every 2-3 years or 200-300 hours of operation. Always use a new gasket during water pump rebuilds to maintain a proper seal.

Q: What are signs that my water pump gasket may be failing?
A: Common symptoms include weak water flow from the tell-tale outlet, engine overheating, water leaking from the lower unit, or visible damage to the gasket during inspection. Replace immediately if any of these signs appear.

Q: Can I reuse the old gasket if it looks undamaged?
A: No, always install a new gasket when servicing the water pump. Reusing old gaskets can result in improper sealing, leading to cooling system failure and potential engine damage.

Q: Is this an OEM gasket or an aftermarket replacement?
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.