Water Pump Impeller Repair Kit – Fits Yamaha 40/50/60 HP Outboards (Replaces 63D-W0078-01-00, 6H3-44352-00-00)
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Yamaha 63D-W0078-00-00 Superseded by 63D-W0078-01-00
Yamaha 63D-W0078-02-00 Superseded by 63D-W0078-01-00
Yamaha 63D-W0078-03-00 Superseded by 63D-W0078-01-00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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