676-W006A-00 Water Pump Repair Kit for Yamaha 40XWT E40XMH | JLM Marine

676-W006A-00 Water Pump Repair Kit for Yamaha 40XWT E40XMH | JLM Marine

This comprehensive water pump repair kit is engineered to fit Yamaha 40HP 2-Stroke outboard engines, specifically the 40XWT and E40XMH models from 1998 to 2019. Designed to restore your engine's cooling system performance, this kit ensures reliable water circulation and temperature regulation for extended engine life.

The kit directly replaces OEM part number 676-W006A-00, providing a complete overhaul solution with all essential components including impeller, wear plate, gaskets, thermostat, fuel filter, anode, and gear oil pump. Each component meets strict quality standards to deliver OEM-equivalent performance.

• Complete 16-piece kit with all critical cooling system components
• Includes upgraded thermostat, fuel filter, and sacrificial anode for comprehensive maintenance
• Pre-packaged with all necessary gaskets, seals, and hardware for immediate 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 repair kit includes 16 components to fully service your water pump and related systems:

• 6H4-44352-00 Impeller × 1
• 66T-44323-00 Plate, Wear × 1
• 63D-44322-00 Cup, Insert × 1
• 63D-44316-00 Gasket × 1
• 93210-59MG7 O-ring × 1
• 90280-03024 Key × 1
• 63D-44312-00 Cover × 1
• 663-44366-00 Grommet × 1
• 90119-08M15 Bolt × 4
• 61N-24560-00 Fuel Filter × 1
• 6E5-12411-30 Thermostat × 1
• 676-12414-A1 Thermostat Gasket × 1
• 90430-08020 Drain Gasket × 4
• 91490-30025 Cotter Pin × 1
• 67C-45251-00 Anode × 1
• 24OP149 Gear Oil Pump × 1

Note: Verify all part numbers against your engine's service manual before installation to ensure proper fitment.

Installation Guide

1. Preparation: Disconnect the fuel line and flush the engine cooling system. Remove the lower unit according to your service manual.
2. Access Water Pump: Remove the bolts securing the water pump housing to expose the old impeller and components.
3. Remove Old Parts: Carefully extract the old impeller, wear plate, insert cup, and gaskets. Inspect the pump housing for damage or corrosion.
4. Clean Surfaces: Thoroughly clean all mating surfaces, removing old gasket material and debris. Ensure the pump cavity is free of sand or salt buildup.
5. Install Insert Cup & Key: Place the new insert cup (63D-44322-00) into the housing and install the drive key (90280-03024) in the driveshaft slot.
6. Lubricate & Install Impeller: Apply marine grease to the new impeller (6H4-44352-00) and insert it with blades oriented correctly. Rotate manually to confirm smooth operation.
7. Install Wear Plate: Position the new wear plate (66T-44323-00) over the impeller, aligning all passages and bolt holes.
8. Gasket & Cover: Install the new gasket (63D-44316-00) and O-ring (93210-59MG7), then secure the pump cover (63D-44312-00) with the provided bolts (90119-08M15) in a star pattern.
9. Replace Thermostat: Remove the old thermostat and install the new one (6E5-12411-30) with its gasket (676-12414-A1). Ensure the temperature-sensing element faces the correct direction.
10. Install Anode & Accessories: Replace the sacrificial anode (67C-45251-00) and install the new fuel filter (61N-24560-00) and gear oil pump (24OP149) as applicable.
11. Reassemble Lower Unit: Install drain gaskets (90430-08020) at drain plug locations and secure the cotter pin (91490-30025). Reattach the lower unit and torque all fasteners to specification.
12. Test & Verify: Reconnect fuel lines, run the engine in a test tank or on muffs, and verify strong water stream from the tell-tale indicator. Check for leaks and proper operating temperature.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my Yamaha outboard?
A: Verify your engine model number matches 40XWT or E40XMH and falls within the 1998-2019 year range. Cross-reference the OEM part number 676-W006A-00 in your service manual or on the original pump housing to ensure compatibility.

Q: How often should I replace my water pump impeller and kit components?
A: Yamaha recommends replacing the water pump impeller every 2-3 years or 200-300 hours of operation, whichever comes first. If your engine overheats, shows weak water flow from the tell-tale, or has been in storage, immediate replacement is advised.

Q: What are the signs that my water pump is failing?
A: Common symptoms include engine overheating, weak or absent water discharge from the tell-tale indicator, steam from the engine, loss of power, and alarms or warning lights. Inspect the impeller immediately if any of these occur.

Q: Does this kit include everything I need for a complete water pump service?
A: Yes, this comprehensive 16-piece kit includes the impeller, wear plate, gaskets, seals, hardware, thermostat, fuel filter, anode, and gear oil pump—everything required for a thorough cooling system overhaul on compatible Yamaha 40HP 2-stroke models.

Q: Can I install this kit myself or do I need a professional mechanic?
A: If you have mechanical experience and the proper tools, DIY installation is possible following the service manual. However, professional installation is recommended to ensure correct assembly, torque specifications, and reliable performance.

Q: What is the difference between this aftermarket kit and the original Yamaha OEM kit?
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.