Water Pump Repair Kit – Fits Yamaha 115-300 HP (Replaces 6G5-W0078-A1-00, 6G5-W0078-00-00)
Water Pump Repair Kit – Fits Yamaha 115-300 HP (Replaces 6G5-W0078-A1-00, 6G5-W0078-00-00) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Water Pump Repair Kit – Fits Yamaha 115-300 HP (Replaces 6G5-W0078-...
Water Pump Repair Kit – Fits Yamaha 115-300 HP (Replaces 6G5-W0078-A1-00, 6G5-W0078-00-00) is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Repair Kit – Fits Yamaha 115-300 HP Outboard Motors is designed for a wide range of Yamaha 2-Stroke outboard motors, including 115, 150, 175, 200, and 225 HP models manufactured between 1984 and 1992. It provides all the necessary components for a complete overhaul of your engine's water pump assembly, ensuring optimal cooling performance.
It serves as a direct replacement for Yamaha OEM parts 6G5-W0078-A1-00, 6G5-W0078-00-00, and 6G5-W0078-01-00, along with aftermarket parts from Sierra, GlückMarine, KUNOANZ, and WINGOGO.
- Engineered for direct OEM replacement fit and function.
- Features a durable nylon housing and a CR-Neoprene impeller for longevity.
- Includes all necessary gaskets, o-rings, and hardware for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 6G5-W0078-A1-00 |
| Yamaha | 6G5-W0078-00-00 |
| Yamaha | 6G5-W0078-01-00 |
| Sierra | 18-3311 |
| Sierra | 18-3310 |
| GlückMarine | 6G5W0078 |
| KUNOANZ | KU-002093 |
| WINGOGO | 6G5-W0078-A1-00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 150ETLD, 150ETLDA | 150 | 2-Stroke | 1990 | 6G5-W0078-A1-00 | |
| Yamaha | 150ETLF | 150 | 2-Stroke | 1989 | 6G5-W0078-A1-00 | |
| Yamaha | 150ETLJ | 150 | 2-Stroke | 1986 | 6G5-W0078-A1-00 | |
| Yamaha | 150ETLK | 150 | 2-Stroke | 1985 | 6G5-W0078-A1-00 | |
| Yamaha | 150ETLN | 150 | 2-Stroke | 1984 | 6G5-W0078-A1-00 | |
| Yamaha | 150ETXD, 150ETXDA | 150 | 2-Stroke | 1990 | 6G5-W0078-A1-00 | |
| Yamaha | 150ETXF | 150 | 2-Stroke | 1989 | 6G5-W0078-A1-00 | |
| Yamaha | 150ETXJ | 150 | 2-Stroke | 1986 | 6G5-W0078-A1-00 | |
| Yamaha | 150ETXK | 150 | 2-Stroke | 1985 | 6G5-W0078-A1-00 | |
| Yamaha | 150ETXN | 150 | 2-Stroke | 1984 | 6G5-W0078-A1-00 | |
| Yamaha | 150TLRP | 150 | 2-Stroke | 1991 | 6G5-W0078-A1-00 | |
| Yamaha | 150TXRP | 150 | 2-Stroke | 1991 | 6G5-W0078-A1-00 | |
| Yamaha | L150ETXD, L150ETXDA | 150 | 2-Stroke | 1990 | 6G5-W0078-A1-00 | |
| Yamaha | L150ETXF | 150 | 2-Stroke | 1989 | 6G5-W0078-A1-00 | |
| Yamaha | L150ETXG | 150 | 2-Stroke | 1988 | 6G5-W0078-A1-00 | |
| Yamaha | L150ETXJ | 150 | 2-Stroke | 1986 | 6G5-W0078-A1-00 | |
| Yamaha | L150TXRP | 150 | 2-Stroke | 1991 | 6G5-W0078-A1-00 | |
| Yamaha | P150TLRP | 150 | 2-Stroke | 1991 | 6G5-W0078-A1-00 | |
| Yamaha | PROV150LD, PROV150LDA | 150 | 2-Stroke | 1990 | 6G5-W0078-A1-00 | |
| Yamaha | PROV150LF | 150 | 2-Stroke | 1989 | 6G5-W0078-A1-00 | |
| Yamaha | PROV150LG | 150 | 2-Stroke | 1988 | 6G5-W0078-A1-00 | |
| Yamaha | PROV150LH | 150 | 2-Stroke | 1987 | 6G5-W0078-A1-00 | |
| Yamaha | 175ETLD, 175ETLDA | 175 | 2-Stroke | 1990 | 6G5-W0078-A1-00 | |
| Yamaha | 175ETLF | 175 | 2-Stroke | 1989 | 6G5-W0078-A1-00 | |
| Yamaha | 175ETLJ | 175 | 2-Stroke | 1986 | 6G5-W0078-A1-00 | |
| Yamaha | 175ETLK | 175 | 2-Stroke | 1985 | 6G5-W0078-A1-00 | |
| Yamaha | 175ETLN | 175 | 2-Stroke | 1984 | 6G5-W0078-A1-00 | |
| Yamaha | 175ETXD, 175ETXDA | 175 | 2-Stroke | 1990 | 6G5-W0078-A1-00 | |
| Yamaha | 175ETXF | 175 | 2-Stroke | 1989 | 6G5-W0078-A1-00 | |
| Yamaha | 175ETXJ | 175 | 2-Stroke | 1986 | 6G5-W0078-A1-00 | |
| Yamaha | 175ETXK | 175 | 2-Stroke | 1985 | 6G5-W0078-A1-00 | |
| Yamaha | 175ETXN | 175 | 2-Stroke | 1984 | 6G5-W0078-A1-00 | |
| Yamaha | 175TLRP | 175 | 2-Stroke | 1991 | 6G5-W0078-A1-00 | |
| Yamaha | 175TXRP | 175 | 2-Stroke | 1991 | 6G5-W0078-A1-00 | |
| Yamaha | 200ETLD, 200ETLDA, 200ETLD-JD | 200 | 2-Stroke | 1990 | 6G5-W0078-A1-00 | |
| Yamaha | 200ETLF, 200ETLF-JD | 200 | 2-Stroke | 1989 | 6G5-W0078-A1-00 | |
| Yamaha | 200ETLJ | 200 | 2-Stroke | 1986 | 6G5-W0078-A1-00 | |
| Yamaha | 200ETLK | 200 | 2-Stroke | 1985 | 6G5-W0078-A1-00 | |
| Yamaha | 200ETLN | 200 | 2-Stroke | 1984 | 6G5-W0078-A1-00 | |
| Yamaha | 200ETXD, 200ETXDA | 200 | 2-Stroke | 1990 | 6G5-W0078-A1-00 | |
| Yamaha | 200ETXF | 200 | 2-Stroke | 1989 | 6G5-W0078-A1-00 | |
| Yamaha | 200ETXJ | 200 | 2-Stroke | 1986 | 6G5-W0078-A1-00 | |
| Yamaha | 200ETXK | 200 | 2-Stroke | 1985 | 6G5-W0078-A1-00 | |
| Yamaha | 200ETXN | 200 | 2-Stroke | 1984 | 6G5-W0078-A1-00 | |
| Yamaha | 200TJRP | 200 | 2-Stroke | 1991 | 6G5-W0078-A1-00 | |
| Yamaha | 200TLRP | 200 | 2-Stroke | 1991 | 6G5-W0078-A1-00 | |
| Yamaha | 200TXRP | 200 | 2-Stroke | 1991 | 6G5-W0078-A1-00 | |
| Yamaha | L200ETXD, L200ETXDA | 200 | 2-Stroke | 1990 | 6G5-W0078-A1-00 | |
| Yamaha | L200ETXF | 200 | 2-Stroke | 1989 | 6G5-W0078-A1-00 | |
| Yamaha | L200ETXG | 200 | 2-Stroke | 1988 | 6G5-W0078-A1-00 | |
| Yamaha | L200ETXJ | 200 | 2-Stroke | 1986 | 6G5-W0078-A1-00 | |
| Yamaha | L200TXRP | 200 | 2-Stroke | 1991 | 6G5-W0078-A1-00 | |
| Yamaha | P200TLRQ | 200 | 2-Stroke | 1992 | 6G5-W0078-A1-00 | |
| Yamaha | 225ETLD, 225ETLDA | 225 | 2-Stroke | 1990 | 6G5-W0078-A1-00 | |
| Yamaha | 225ETXD, 225ETXDA | 225 | 2-Stroke | 1990 | 6G5-W0078-A1-00 | |
| Yamaha | 225TLRP | 225 | 2-Stroke | 1991 | 6G5-W0078-A1-00 | |
| Yamaha | 225TXRP | 225 | 2-Stroke | 1991 | 6G5-W0078-A1-00 | |
| Yamaha | V6EXCELLF | V6 | 2-Stroke | 1989 | 6G5-W0078-A1-00 | |
| Yamaha | V6EXCELLG | V6 | 2-Stroke | 1988 | 6G5-W0078-A1-00 | |
| Yamaha | V6EXCELLH | V6 | 2-Stroke | 1987 | 6G5-W0078-A1-00 | |
| Yamaha | V6EXCELXF | V6 | 2-Stroke | 1989 | 6G5-W0078-A1-00 | |
| Yamaha | V6EXCELXG | V6 | 2-Stroke | 1988 | 6G5-W0078-A1-00 | |
| Yamaha | V6EXCELXH | V6 | 2-Stroke | 1987 | 6G5-W0078-A1-00 | |
| Yamaha | V6SPECIALLJ | V6 | 2-Stroke | 1986 | 6G5-W0078-A1-00 | |
| Yamaha | V6SPECIALLK | V6 | 2-Stroke | 1985 | 6G5-W0078-A1-00 | |
| Yamaha | V6SPECIALLN | V6 | 2-Stroke | 1984 | 6G5-W0078-A1-00 | |
| Yamaha | V6SPECIALXJ | V6 | 2-Stroke | 1986 | 6G5-W0078-A1-00 | |
| Yamaha | V6SPECIALXK | V6 | 2-Stroke | 1985 | 6G5-W0078-A1-00 | |
| Yamaha | V6SPECIALXN | V6 | 2-Stroke | 1984 | 6G5-W0078-A1-00 |
Technical Specs
- Product Type
- Water Pump Impeller Repair Kit with Housing
- Installation
- Direct OEM replacement
- Housing Material
- Nylon
- Housing Color
- Black
- Impeller Material
- CR-Neoprene
What’s in the Box
- 1 x Water Pump Impeller (6E5-44352-00-00/6E5-44352-01-00)
- 1 x Wear Plate (6G5-44323-00-00/6G5-44323-01-00)
- 1 x Insert Cup (61A-44322-00-00)
- 1 x Gasket (6E5-44315-00-00/6E5-44315-A0-00)
- 1 x Key (90280-04M05-00/93210-86M38-00)
- 4 x Bolt (91290-08045-00/97095-08045-00/97290-08045-00/97370-08045-00/97395-08045-00)
- 1 x O-Ring (93210-86M38-00)
- 1 x O-Ring (93210-37160-00/93210-37M67-00)
- 2 x Pin Dowel
- 1 x Water Pump Housing (61A-44311-00-00/61A-44311-01-00/6E5-44311-00-00)
Installation Notes
- Disconnect the battery and ensure the engine is off and cool.
- Remove the lower unit (gearcase) from the outboard motor.
- Unbolt and remove the old water pump housing assembly.
- Clean the mounting surfaces, removing any old gasket material or sealant.
- Install the new key, impeller, wear plate, and insert cup into the new housing.
- Lightly grease the interior of the housing and the new gaskets.
- Place the new gaskets and the pump assembly onto the driveshaft and secure it with the provided bolts, tightening them to the manufacturer-specified torque.
- Reinstall the lower unit, ensuring the driveshaft and water tube are correctly aligned.
- Reconnect the battery and test the engine in a suitable water supply to verify proper water flow from the tell-tale port.
Troubleshooting & FAQ
How do I know if this kit fits my specific engine model?
This kit is designed for Yamaha 2-stroke 115-300 HP outboards from 1984–1992. The most reliable way to confirm fitment is to check your engine's model and year against the comprehensive list in the "Engine & Model Compatibility" section above. You can also match your existing part numbers with those in our "Part Number Matrix."
What are the signs of a failing water pump?
Common symptoms include a weak or non-existent water stream from the "tell-tale" outlet, engine overheating alarms, and reduced engine performance. Visible damage to the old impeller, such as cracked or missing vanes, also indicates a need for replacement.
How often should I replace my water pump impeller?
For preventative maintenance, it is recommended to inspect the water pump annually and replace the impeller and gaskets every 1-2 years or every 100-200 hours of operation, depending on usage conditions (e.g., saltwater vs. freshwater).
Is the housing included in this kit?
Yes, this is a complete water pump repair kit that includes the outer housing, impeller, wear plate, insert cup, gaskets, o-rings, and all necessary hardware for a full replacement.
Can I install this kit myself?
While DIY installation is possible for those with mechanical experience, we recommend professional installation. The process involves removing the lower unit, which requires proper tools and knowledge to ensure correct alignment and sealing upon reassembly.
Why are there multiple OEM numbers listed for a single part?
Manufacturers often update or supersede part numbers over time due to design revisions or supplier changes. The multiple numbers listed (e.g., 6G5-W0078-A1-00, 6G5-W0078-00-00) are all valid OEM cross-references for this kit.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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