Water Pump Impeller Kit – Fits Yamaha 2-Stroke 115-130HP (Replaces 6E5-W0078-A1-00)
Water Pump Impeller Kit – Fits Yamaha 2-Stroke 115-130HP (Replaces 6E5-W0078-A1-00) 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 Impeller Kit – Fits Yamaha 2-Stroke 115-130HP (Replaces ...
Water Pump Impeller Kit – Fits Yamaha 2-Stroke 115-130HP (Replaces 6E5-W0078-A1-00) is backordered and will ship as soon as it is back in stock.
Product Details
This comprehensive Water Pump Impeller Kit – Fits Yamaha 115HP & 130HP 2-Stroke Outboards (Replaces 6E5-W0078-A1-00) provides all necessary components for a full water pump service. It is designed for a precise fit on Yamaha 2-Stroke 115HP and 130HP models manufactured between 1984–1996, including C115 and L130 series engines.
This kit is a direct aftermarket replacement for Yamaha OEM part numbers 6E5-W0078-A1-00, 6E5-W0078-00-00, and 6E5-W0078-01-00, as well as Sierra equivalents 18-3373 and 18-3372.
- Installs in the lower unit (gear case) of your outboard.
- Engineered specifically for 2-stroke gasoline outboards.
- Includes a complete set of gaskets, seals, and hardware for a reliable repair.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By | Notes |
|---|---|---|---|
| Yamaha | 6E5-W0078-A1-00 | 6N6-W0078-00-00 | For some 1993–1996 models. Verify your specific model. |
| Yamaha | 6E5-W0078-00-00 | ||
| Yamaha | 6E5-W0078-01-00 | ||
| Sierra | 18-3373 | Kit with housing. | |
| Sierra | 18-3372 | Kit without housing. |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This kit is designed for the following Yamaha 2-stroke models. Please carefully check your engine's model number and year to ensure correct fitment.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 115ETXN | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETLK | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETXK | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETLN | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETXJ | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETLJ | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115TLRQ | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115TJRP | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 130TLRP | 130 | 2-Stroke | 1988–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 130ETLDA | 130 | 2-Stroke | 1988–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 130TXRP | 130 | 2-Stroke | 1988–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 130ETLD | 130 | 2-Stroke | 1988–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETLG-JD | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | C115TXRQ | 115 | 2-Stroke | 1991–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETXG | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 130ETLF | 130 | 2-Stroke | 1988–1992 | 6E5-W0078-A1-00 | |
| Yamaha | L130ETXDA | 130 | 2-Stroke | 1989–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETLD-JD | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115TXRQ | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETXDA | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETXD | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETLD | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | L130TXRQ | 130 | 2-Stroke | 1989–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 130ETXDA | 130 | 2-Stroke | 1988–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 130ETLG | 130 | 2-Stroke | 1988–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 130ETXF | 130 | 2-Stroke | 1988–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 130ETXG | 130 | 2-Stroke | 1988–1992 | 6E5-W0078-A1-00 | |
| Yamaha | L130ETXF | 130 | 2-Stroke | 1989–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETXF | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 130TXRQ | 130 | 2-Stroke | 1988–1992 | 6E5-W0078-A1-00 | |
| Yamaha | L130TXRP | 130 | 2-Stroke | 1989–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 115TXRP | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETLDA | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115TJRQ | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 130TLRQ | 130 | 2-Stroke | 1988–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 130ETXD | 130 | 2-Stroke | 1988–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 115TLRP | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | C115TLRQ | 115 | 2-Stroke | 1991–1992 | 6E5-W0078-A1-00 | |
| Yamaha | C115TLRP | 115 | 2-Stroke | 1991–1992 | 6E5-W0078-A1-00 | |
| Yamaha | L130ETXD | 130 | 2-Stroke | 1989–1992 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETLG | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETLF | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 | |
| Yamaha | 115ETLF-JD | 115 | 2-Stroke | 1984–1994 | 6E5-W0078-A1-00 |
Technical Specs
- Product Type
- Water Pump Impeller Kit
- Installation
- Lower Unit/Gear Case
- Fuel Type
- For 2-Stroke Engines
- Housing Material
- Marine-Grade Aluminum
- Housing Color
- Silver
- Weight
- 0.45 kg (1 lb)
- Other Technical Attributes
- Contains complete water pump service components
What’s in the Box
- 1 x Impeller (6E5-44352-01-00)
- 1 x Wear Plate
- 1 x Gasket, Water Pump (6E5-44315-A0-00)
- 2 x O-Ring
- 1 x Key, Woodruff (90280-04M05-00)
- 2 x Dowel Pin (93606-12019-00)
- 4 x Bolt with Washer
- 1 x Insert Cartridge (6E5-44322-00-00)
Installation Notes
- Disconnect the battery and shift the outboard into the neutral position.
- Remove the lower unit by unbolting it from the upper engine casing and disconnecting the shift linkage.
- Place the lower unit on a suitable workbench. Remove the bolts securing the water pump housing.
- Lift the housing to expose the old impeller. Note the rotational direction of the existing impeller fins before removing it.
- Remove the old impeller, gaskets, wear plate, and O-rings. Clean all mating surfaces thoroughly.
- Install the new wear plate and gaskets. Slide the new Woodruff key onto the driveshaft.
- Align the new impeller with the key and slide it down. Rotate the driveshaft clockwise while pushing the housing down to correctly seat the fins.
- Apply a marine-grade sealant to the housing bolts and tighten them to the manufacturer's specified torque.
- Reinstall the lower unit, ensuring the water tube and shift shaft are correctly aligned.
- Secure the lower unit bolts and reconnect the shift linkage. Test the engine using a water supply (flusher or test tank) to confirm proper cooling system operation.
Troubleshooting & FAQ
How do I know if this water pump kit fits my outboard?
This kit is specifically for Yamaha 115HP and 130HP 2-stroke models from 1984–1992, and some models up to 1996. The most reliable way to confirm fitment is to match your engine's full model number and year against our compatibility table. You can also cross-reference your existing part number with the numbers in our Part Number Matrix.
My Yamaha engine is a 1994 model. The notes mention a supersession. Will this kit work?
For Yamaha models made between 1993–1996, there can be an overlap. While this 6E5-W0078-A1-00 kit fits many engines in that range, some later models were factory-equipped with the superseded part (6N6-W0078-00-00). We strongly recommend visually comparing your old pump housing and components to our product images or confirming the OEM part number from your service manual before ordering.
What are the signs of a failing water pump impeller?
Common symptoms include the engine overheating at idle or low speeds, a weak or non-existent stream of water from the "telltale" outlet, and a dry, brittle, or cracked appearance of the old impeller upon inspection.
How often should I replace my water pump impeller?
As a general maintenance guideline, it's recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of operation, depending on usage conditions (e.g., saltwater vs. freshwater).
Does this kit include the entire water pump housing?
Yes, this is a complete kit that includes the marine-grade aluminum housing, insert cartridge, wear plate, impeller, and all necessary gaskets, seals, and hardware for a full replacement. It is equivalent to the Sierra 18-3373 kit.
What is the difference between an OEM part and an aftermarket part?
This listing is for an aftermarket replacement, not a part from the original equipment manufacturer (OEM). It is engineered to meet or exceed OEM-level specifications using comparable high-quality materials. Our parts are manufactured in an ISO 9002 certified facility and undergo batch inspections to ensure consistent quality and performance.
How fast do you ship and what are the costs?
We ship worldwide quickly, with typical transit times of 5–15 days for most regions. Standard shipping is free. If available for your location, expedited shipping options and their costs will be presented at checkout.
What is your warranty and return policy on this part?
This kit is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window, provided the part is unused and in its original condition. Please see our full policy page or contact us for return 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.
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