6CJ-W006A-00 Water Pump Kit for Yamaha 70HP 4-Stroke | JLM Marine

Water Pump Kit – Fits Yamaha 70HP 4-Stroke (2011-2022)

This comprehensive water pump maintenance kit is engineered for Yamaha 70HP 4-Stroke outboard engines manufactured from 2011 to 2022. It includes all essential components for a complete cooling system service—impeller, gaskets, seals, wear plate, thermostat, and filters—ensuring reliable water flow and optimal engine temperature regulation.

Direct OEM replacement for 6CJ-W006A-00, this kit provides everything needed to restore your water pump assembly to factory performance standards in a single package.

• Complete rebuild kit with impeller, gaskets, seals, wear plate, thermostat, and multiple filters
• Includes gear oil pump, fuel filters, oil filter, and all necessary hardware
• Designed for straightforward installation following factory service procedures

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 comprehensive kit includes the following components:

• 63D-44312-00 Cover × 1
• 63D-44322-00 Cup, Insert × 1
• 663-44366-00 Grommet × 1
• 6CJ-44315-00 Gasket × 1
• 6CJ-44316-00 Gasket × 1
• 6CJ-44323-00 Plate, Wear × 1
• 6CJ-44324-00 Gasket × 1
• 6H3-44352-00 Impeller × 1
• 90119-08M14 Bolt × 2
• 90119-08M33 Bolt × 2
• 90280-03M03 Key × 1
• 93101-23070 Oil Seal × 2
• 93210-46044 O-ring × 1
• 93604-10M03 Pin × 2
• 6C5-13915-00 Fuel Filter × 1
• 6D8-WS24A-00 Fuel Filter × 1
• 6C5-24251-00 Fuel Filter × 1
• 5GH-13440-60 Oil Filter × 1
• 6G8-12411-00 Thermostat × 1
• 62Y-12414-00 Gasket × 1
• 90430-08020 Drain Gasket × 4
• 91490-30025 Cotter Pin × 1
• 24OP149 Gear Oil Pump × 1

Installation Guide

1. Disconnect the battery and flush the cooling system. Remove the lower unit according to your service manual.
2. Locate and remove the water pump housing by unscrewing mounting bolts. Note the orientation of all components.
3. Remove the old impeller, gaskets, seals, and wear plate. Inspect the pump housing for corrosion or damage.
4. Clean all mating surfaces thoroughly using a gasket scraper and suitable solvent. Ensure no debris remains.
5. Install new oil seals (93101-23070) into the housing using a seal driver. Ensure they are seated evenly.
6. Place the new wear plate (6CJ-44323-00) onto the housing with the smooth side facing the impeller. Apply marine grease to the plate.
7. Lubricate the new impeller (6H3-44352-00) generously with marine grease. Install it with blades oriented in the correct rotation direction.
8. Install the insert cup (63D-44322-00) and grommet (663-44366-00). Position new gaskets (6CJ-44315-00, 6CJ-44316-00, 6CJ-44324-00) on mating surfaces.
9. Install the cover (63D-44312-00) and secure with new bolts (90119-08M14 and 90119-08M33). Torque to manufacturer specifications.
10. Replace the thermostat (6G8-12411-00) with its gasket (62Y-12414-00). Install fuel filters (6C5-13915-00, 6D8-WS24A-00, 6C5-24251-00) and oil filter (5GH-13440-60).
11. Reinstall the lower unit, ensuring proper alignment and using new drain gaskets (90430-08020). Torque all fasteners per specifications.
12. Reconnect the battery and run the engine in a test tank. Verify strong water flow from the tell-tale and check for leaks.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my Yamaha engine?
A: This kit is designed for Yamaha 70HP 4-Stroke engines manufactured between 2011 and 2022. Verify your engine's model year and cross-reference the OEM part number 6CJ-W006A-00 with your service manual or exploded parts diagram before ordering.

Q: How often should I replace the water pump?
A: Yamaha recommends inspecting the water pump annually and replacing the impeller every 2–3 years or 200–300 hours of operation, whichever comes first. If you operate in sandy, silty, or debris-filled water, consider more frequent replacement.

Q: What are the signs of a failing water pump?
A: Common symptoms include weak or absent water flow from the tell-tale (indicator stream), engine overheating, steam from the engine, reduced performance, or an overheat alarm. If you notice any of these signs, inspect the water pump immediately.

Q: Does this kit include the thermostat and filters?
A: Yes, this comprehensive maintenance kit includes one thermostat (6G8-12411-00), three fuel filters (6C5-13915-00, 6D8-WS24A-00, 6C5-24251-00), one oil filter (5GH-13440-60), and a gear oil pump (24OP149), in addition to all water pump components.

Q: Can I install this kit myself or do I need a mechanic?
A: Installation requires mechanical aptitude, proper tools, and familiarity with outboard lower unit disassembly. If you have experience with marine engine maintenance and follow the service manual, DIY installation is feasible. Otherwise, professional installation is recommended to ensure correct torque specifications and proper assembly.

Q: What's the difference between OEM and aftermarket parts?
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.