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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| Yamaha | 63D-W0078-00-00 | Superseded by 63D-W0078-01-00 |
| Yamaha | 63D-W0078-02-00 | Superseded by 63D-W0078-01-00 |
| Yamaha | 63D-W0078-03-00 | Superseded by 63D-W0078-01-00 |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
- Safety First: Disconnect the battery and ensure the engine cannot start accidentally. Disconnect the shift linkage before proceeding.
- Remove Lower Unit: Remove the mounting bolts that secure the lower unit (gearcase) to the engine's midsection and carefully lower it.
- Access the Pump: With the lower unit removed, locate and unbolt the water pump housing (typically 4-5 bolts).
- Disassemble Old Pump: Remove the old housing, impeller, wear plate, gaskets, and seals. Take note of the orientation of the old impeller's fins.
- Clean Surfaces: Thoroughly clean the mounting surfaces on the driveshaft and lower unit to remove any old gasket material or corrosion.
- Install New Components: Install the new water pump gasket, outer plate, and Woodruff key on the driveshaft.
- Install Impeller: Slide the new impeller onto the driveshaft, rotating it clockwise to bend the vanes correctly as it enters the lubricated housing.
- Reassemble Housing: Secure the new housing with the new bolts and tighten them to the manufacturer's specified torque.
- 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.
- 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:
- 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