SKU: 48813732700

Water Pump Impeller Repair Kit – Fits Yamaha 40/50/60 HP Outboards (Replaces 63D-W0078-01-00, 6H3-44352-00-00)

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Description

Water Pump Impeller Repair Kit – Fits Yamaha 40/50/60 HP Outboards (Replaces 63D-W0078-01-00, 6H3-44352-00-00)Water Pump Impeller Repair Kit Fits Yamaha 40 50 60 HP Outboards This water pump impeller repair kit provides a complete solution for servicing the cooling system on a wide range of Yamaha outboards. It is designed for Yamaha 2 Stroke 40 HP and 50 HP models (19972006) and 4 Stroke F40, F50, and F60 models (1997Current). Engineered as a direct replacement for OEM part numbers 63D W0078 01 00, this kit ensures proper fit and function, restoring your

Water Pump Impeller Repair Kit – Fits Yamaha 40/50/60 HP Outboards

This water pump impeller repair kit provides a complete solution for servicing the cooling system on a wide range of Yamaha outboards. It is designed for Yamaha 2-Stroke 40 HP and 50 HP models (1997–2006) and 4-Stroke F40, F50, and F60 models (1997–Current).

Engineered as a direct replacement for OEM part numbers 63D-W0078-01-00, this kit ensures proper fit and function, restoring your engine's cooling performance and preventing overheating.

  • Includes a high-quality neoprene impeller, stainless steel cup and plate, and necessary gaskets and seals for a comprehensive installation.
  • Crafted for direct OEM replacement, ensuring seamless installation without modifications.
  • Restores cooling system efficiency, a critical maintenance task for engine longevity and reliability.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number Notes
Yamaha 63D-W0078-01-00 Current Kit Part Number
Yamaha 63D-W0078-00-00 Superseded by 63D-W0078-01-00
Yamaha 63D-W0078-02-00 Superseded by 63D-W0078-01-00
Yamaha 63D-W0078-03-00 Superseded by 63D-W0078-01-00
Yamaha 6H3-44352-00-00 Impeller Only
Sierra 18-3434 Aftermarket Equivalent

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.

Yamaha 2-Stroke Models

Brand Model Rated HP Stroke Years OEM Part No. Notes
Yamaha 40EJRV, 40EJRW, 40EJRX 40 2-Stroke 1997-1999 63D-W0078-01-00
Yamaha 40ELRV, 40ELRW 40 2-Stroke 1997-1998 63D-W0078-01-00
Yamaha 40ESRV, 40ESRW, 40ESRX 40 2-Stroke 1997-1999 63D-W0078-01-00
Yamaha 40MJHV-Z 40 2-Stroke 1997-2001 63D-W0078-01-00
Yamaha 40MLHV-Z 40 2-Stroke 1997-2001 63D-W0078-01-00
Yamaha 40MSHV-X 40 2-Stroke 1997-1999 63D-W0078-01-00
Yamaha 40TLHV 40 2-Stroke 1997 63D-W0078-01-00
Yamaha 40TLR, 40TLRA-D 40 2-Stroke 2002-2005 63D-W0078-01-00
Yamaha 40TLRV-Z 40 2-Stroke 1997-2001 63D-W0078-01-00
Yamaha C40TLRV-Z 40 2-Stroke 1997-2001 63D-W0078-01-00 Commercial model
Yamaha C40TLRA-B 40 2-Stroke 2002-2003 63D-W0078-01-00 Commercial model
Yamaha P40TLHW, P40TLRW 40 2-Stroke 1998 63D-W0078-01-00
Yamaha 50EJRV-Z 50 2-Stroke 1997-2001 63D-W0078-01-00
Yamaha 50ELRV, 50ELRW 50 2-Stroke 1997-1998 63D-W0078-01-00
Yamaha 50TLHV 50 2-Stroke 1997 63D-W0078-01-00
Yamaha 50TLR, 50TLRA-D 50 2-Stroke 2002-2005 63D-W0078-01-00
Yamaha 50TLRV, 50TLRZ 50 2-Stroke 1997, 2001 63D-W0078-01-00
Yamaha C50TLRW-Z 50 2-Stroke 1998-2001 63D-W0078-01-00 Commercial model

Yamaha 4-Stroke Models

Brand Model Rated HP Stroke Years OEM Part No. Notes
Yamaha F40TLRX 40 4-Stroke 1999 63D-W0078-01-00
Yamaha F50LA, F50LB 50 4-Stroke 2012-2016 63D-W0078-01-00
Yamaha F50TLHV 50 4-Stroke 1997 63D-W0078-01-00
Yamaha F50TLR 50 4-Stroke 2005-2011 63D-W0078-01-00
Yamaha F50TLRA-D 50 4-Stroke 2002-2005 63D-W0078-01-00
Yamaha F50TLRV-Z 50 4-Stroke 1997-2001 63D-W0078-01-00
Yamaha F60JA, F60JB 60 4-Stroke 2012-2016 63D-W0078-01-00
Yamaha F60LA, F60LB 60 4-Stroke 2012-2016 63D-W0078-01-00
Yamaha F60LHA, F60LHB 60 4-Stroke 2011-2016 63D-W0078-01-00
Yamaha F60TJR 60 4-Stroke 2005-2007 63D-W0078-01-00
Yamaha F60TJRB-D 60 4-Stroke 2003-2005 63D-W0078-01-00
Yamaha F60TLR 60 4-Stroke 2005-2011 63D-W0078-01-00
Yamaha F60TLRA-D 60 4-Stroke 2002-2005 63D-W0078-01-00
Yamaha T50TLRV 50 4-Stroke 1997 63D-W0078-01-00 High Thrust
Yamaha T50TLRC 50 4-Stroke 2004 63D-W0078-01-00 High Thrust

Technical Specifications

Specification Value
Product Type Water Pump Impeller Repair Kit
Installation Direct OEM Replacement
Material Neoprene Impeller, Stainless Steel Cup and Plate
Dimensions 15.8 × 10.2 × 5.1 cm (6.22 × 4.02 × 2.01 inches) package dimensions
Weight 0.24 kg (8.4 oz)
OEM Part Numbers 63D-W0078-00-00, 63D-W0078-01-00, 63D-W0078-02-00, 63D-W0078-03-00
Impeller Part Number 6H3-44352-00-00

Package Contents

  • 1 x Cartridge Insert (63D-44322-00-00)
  • 1 x Impeller (6H3-44352-00-00)
  • 1 x Pump Housing Cover (63D-44312-00-00)
  • 1 x Cartridge Outer Plate (63D-44323-00-00)
  • 1 x O-Ring (93210-59MG7-00)
  • 1 x Water Pump Gasket (63D-44316-00-00)
  • 4 x Bolts with Washers (90119-08M15-00)
  • 1 x Water Seal Damper 2 (663-44366-00-00)
  • 1 x Woodruff Key (90280-03024-00)

Installation Guide

  1. Safety First: Disconnect the battery and ensure the engine cannot start accidentally. Disconnect the shift linkage before proceeding.
  2. Remove Lower Unit: Remove the mounting bolts that secure the lower unit (gearcase) to the engine's midsection and carefully lower it.
  3. Access the Pump: With the lower unit removed, locate and unbolt the water pump housing (typically 4-5 bolts).
  4. Disassemble Old Pump: Remove the old housing, impeller, wear plate, gaskets, and seals. Take note of the orientation of the old impeller's fins.
  5. Clean Surfaces: Thoroughly clean the mounting surfaces on the driveshaft and lower unit to remove any old gasket material or corrosion.
  6. Install New Components: Install the new water pump gasket, outer plate, and Woodruff key on the driveshaft.
  7. Install Impeller: Slide the new impeller onto the driveshaft, rotating it clockwise to bend the vanes correctly as it enters the lubricated housing.
  8. Reassemble Housing: Secure the new housing with the new bolts and tighten them to the manufacturer's specified torque.
  9. Reinstall Lower Unit: Carefully guide the lower unit back into place, ensuring the driveshaft, shift shaft, and water tube align. Re-secure the mounting bolts.
  10. Final Checks: Reconnect the shift linkage and battery. Test the engine on a water supply (using "ear muffs" or in the water) and confirm a steady stream from the tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my specific engine model?

A: The most reliable method is to cross-reference your engine's model and year with the detailed lists in the 'Compatible Engine Models' section. Verifying the OEM part number (63D-W0078-01-00) against your service manual or existing part also ensures a correct match.

Q: What are the common symptoms of a failed water pump impeller?

A: Key signs include the engine overheating at idle or low speeds, a weak or intermittent water stream from the "telltale" outlet, or finding brittle, cracked, or missing vanes on the old impeller during inspection.

Q: How often should the water pump impeller be replaced?

A: As a crucial part of preventative maintenance, we recommend replacing the impeller every 1 to 2 years or every 100-200 hours of use. This can vary based on operating conditions, especially in saltwater or sandy/silty environments.

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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 48813732700

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Ron
Draper, US
★★★★★ 3
For me this was a waste of money.
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Reviewed in the United States on October 20, 2024
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Nicole W
Lowell, US
★★★★★ 5
Dog’s favorite
I don’t get the appeal of this toy, but the dogs love it. Easy to play fetch with, the dogs even use it as a tug toy occasionally. My Lab loves it so much, it’s her toy that she takes to bed with her every night. Glad I purchased it; well worth it.
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Reviewed in the United States on September 19, 2020
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Dana C. Ingram
Alexandria, US
★★★★★ 2
Cheap plastic
My dog destroyed this in matter of minutes
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Reviewed in the United States on January 15, 2025
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a customer
Cuba, US
★★★★★ 5
My dog loves these toys.
Size: Mini, Color: Gator (Pink)
Not a huge toy, nor is my dog. But we have lots of goDog toys. Practically indestructible and my dog likes to carry these in his mouth and bring them onto the foot of our bed. Brilliant colors and good squeaker but my dog is afraid of the squeak. Fair value for cost.
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Reviewed in the United States on June 10, 2026
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University Doc
Waukegan, US
★★★★★ 5
Our XL dogs love them. Highly recommend it!
Size: Mini, Color: Gator (Pink)
Our XL dogs love this! Highly recommend them! Highly recommend. Not for aggressive chewers but our big dogs don't destroy their toys. They cherish them. Great for play and cuddling. Not to loud either. Very cute.
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Reviewed in the United States on May 13, 2026

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