6AH-W006A-00 Water Pump Maintenance Kit for Yamaha F15 F15C F20 F20B | JLM Marine

Water Pump Maintenance Kit – Fits Yamaha F15 F15C F20 F20B Outboard Engines

This comprehensive water pump maintenance kit is engineered for Yamaha 15 HP and 20 HP four-stroke outboard engines, covering F15, F15C, F20, and F20B models from 2007 to 2024. It provides all essential components for a complete cooling system overhaul, including water pump housing, impeller, wear plates, seals, thermostat, fuel filter, oil filter, anode, and drain gaskets.

Direct OEM replacement for 6AH-W006A-00, this kit ensures reliable cooling performance and extends engine life. Ideal for routine maintenance intervals or rebuilding an aging pump assembly.

• Complete kit with 17 components including impeller, housing, thermostat, filters, and anode
• Covers both 15 HP and 20 HP Yamaha four-stroke models across multiple series
• Includes gear oil pump and all necessary seals, gaskets, and hardware for installation

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

This complete maintenance kit includes all components required for a thorough water pump service and routine maintenance:

• 63V-44322-00 – Cup, Insert × 1
• 63V-44328-00 – Plate × 2
• 63V-44352-00 – Impeller × 1
• 664-44338-00 – Key × 1
• 68T-44323-00 – Plate, Wear × 1
• 6AH-44311-00 – Housing, Water Pump × 1
• 6L2-44367-00 – Damper, Water Seal × 1
• 93210-49046 – O-ring × 1
• 93604-10M03 – Pin × 2
• 97095-08045 – Bolt × 4
• 61N-24560-10 – Fuel Filter × 1
• 5GH-13440-60 – Oil Filter × 1
• 6AH-12411-00 – Thermostat × 1
• 90430-08020 – Drain Gasket × 4
• 91490-30025 – Cotter Pin × 1
• 6AH-45251-00 – Anode × 1
• 24OP149 – Gear Oil Pump × 1

Installation Guide

1. Disconnect the spark plug lead and remove the lower unit from the engine. Drain all gear oil using the drain plugs.
2. Remove the old water pump housing by taking out the mounting bolts. Carefully pull the housing off the driveshaft.
3. Clean all mating surfaces on the lower unit and driveshaft housing. Remove old gasket material and inspect for corrosion or damage.
4. Install the new impeller onto the driveshaft, ensuring the key aligns properly. Apply marine grease to the impeller blades for easier installation.
5. Position the wear plate and insert cup into the new housing. Ensure all seals and O-rings are properly seated.
6. Slide the new water pump housing over the driveshaft and impeller. Rotate the driveshaft clockwise to help the impeller blades fold into the housing.
7. Secure the housing with the provided bolts, tightening in a star pattern to manufacturer torque specifications.
8. Replace the thermostat in the cylinder head if accessible during this service. Use a new gasket or seal as provided.
9. Install the new anode in its mounting location. Ensure proper electrical contact with the engine block.
10. Replace the fuel filter and oil filter according to their respective mounting locations. Use new drain gaskets on all oil drain plugs.
11. Refill the lower unit with fresh gear oil using the included gear oil pump. Install drain plugs with new gaskets and tighten securely.
12. Reinstall the lower unit onto the engine, reconnect the spark plug lead, and test the cooling system by running the engine in a test tank or on-water.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my specific Yamaha engine?
A: Cross-reference your engine model and year with the compatibility table above. You can also check your engine's parts diagram using your serial number via the Yamaha Serial Number Guide linked in the Compatible Engine Models section.

Q: How often should I replace the water pump impeller and service the cooling system?
A: Yamaha recommends inspecting the impeller every 100 hours of operation or annually, whichever comes first. Replace if blades show wear, cracking, or loss of flexibility to prevent overheating.

Q: What are the signs that my water pump is failing?
A: Common symptoms include reduced water flow from the telltale (pee hole), engine overheating alarms, steam from the engine, or visible impeller damage during inspection. Address these issues immediately to prevent engine damage.

Q: Can I install this kit myself or do I need a mechanic?
A: If you have mechanical experience and the proper tools, you can install this kit following the guide above. However, professional installation is recommended to ensure all seals are correctly positioned and torque specs are met.

Q: Does this kit include everything I need for a complete service?
A: Yes, this kit includes the water pump components, thermostat, fuel filter, oil filter, anode, drain gaskets, and gear oil pump. You will need to supply fresh gear oil and basic hand tools.

Q: Is this an OEM part or 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.