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You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
This comprehensive repair kit is designed to restore the cooling system on Yamaha 2HP 2-Stroke outboard motors manufactured between 1984 and 2002. It provides all the necessary components to replace a worn or damaged water pump impeller and related parts, ensuring your engine maintains proper operating temperature and avoids overheating.
Each component is engineered for a direct fit, serving as a reliable alternative to original equipment manufacturer parts, ensuring a complete and lasting repair.
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
Brand | Part Number |
---|---|
Yamaha | 6A1-W0078-02-00 |
Yamaha | 6A1-W0078-01-00 |
Yamaha | 6A1-W0078-00-00 |
Yamaha | 6GD-W0078-00-00 |
Sierra | 18-3462 |
Sierra | 18-3463 |
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.
Confirm your engine model/year in the table below.
Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
---|---|---|---|---|---|---|
Yamaha | 2SF | 2 | 2-Stroke | 1989 | 6A1-W0078-02-00 | |
Yamaha | 2SD | 2 | 2-Stroke | 1990 | 6A1-W0078-02-00 | |
Yamaha | 2MSHP | 2 | 2-Stroke | 1991 | 6A1-W0078-02-00 | |
Yamaha | 2MSHQ | 2 | 2-Stroke | 1992 | 6A1-W0078-02-00 | |
Yamaha | 2MHR | 2 | 2-Stroke | 1993 | 6A1-W0078-02-00 | |
Yamaha | 2MSHR | 2 | 2-Stroke | 1993 | 6A1-W0078-02-00 | |
Yamaha | 2MHS | 2 | 2-Stroke | 1994 | 6A1-W0078-02-00 | |
Yamaha | 2MSHS | 2 | 2-Stroke | 1994 | 6A1-W0078-02-00 | |
Yamaha | 2MHT | 2 | 2-Stroke | 1995 | 6A1-W0078-02-00 | |
Yamaha | 2MSHT | 2 | 2-Stroke | 1995 | 6A1-W0078-02-00 | |
Yamaha | 2MSHU | 2 | 2-Stroke | 1996 | 6A1-W0078-02-00 | |
Yamaha | 2MSHV | 2 | 2-Stroke | 1997 | 6A1-W0078-02-00 | |
Yamaha | 2MSHW | 2 | 2-Stroke | 1998 | 6A1-W0078-02-00 | |
Yamaha | 2MSHX | 2 | 2-Stroke | 1999 | 6A1-W0078-02-00 | |
Yamaha | 2MSHY | 2 | 2-Stroke | 2000 | 6A1-W0078-02-00 | |
Yamaha | 2MSHKZ | 2 | 2-Stroke | 2001 | 6A1-W0078-02-00 | |
Yamaha | 2MSHZ | 2 | 2-Stroke | 2001 | 6A1-W0078-02-00 | |
Yamaha | 2MSHA | 2 | 2-Stroke | 2002 | 6A1-W0078-02-00 | |
Yamaha | Various 2HP | 2 | 2-Stroke | 1984-1987 | 6A1-W0078-02-00 | Early models |
Mariner | 2HP Models | 2 | 2-Stroke | [Data Needed] | 6A1-W0078-02-00 | Compatible with select models (verify via serial number) |
Specification | Value |
---|---|
Product Type | Water Pump Impeller Repair Kit |
Installation | Direct OEM replacement |
Other Technical Attributes | For Yamaha 2HP cooling system |
Q: How do I confirm this kit fits my exact Yamaha model?
A: Check the "Compatible Engine Models" table on this page. Match your engine model, horsepower, and year range. For complete certainty, use the Yamaha Serial Number Guide linked above to identify your engine and cross-reference the OEM part number (6A1-W0078-02-00).
Q: What are the signs of a failing water pump impeller?
A: Common signs include the engine overheating at idle or low speeds, a weak or non-existent water stream from the "tell-tale" outlet, and a dry, cracked, or brittle appearance of the old impeller upon inspection.
Q: How often should I replace my water pump impeller?
A: For optimal engine protection, it is recommended to inspect and/or replace the water pump impeller annually or every 100 hours of use, whichever comes first. This is especially important if you operate in saltwater or debris-heavy water.
Q: Does this kit fit Mariner outboards?
A: This kit is compatible with select 2HP 2-Stroke Mariner models that use the Yamaha 6A1-W0078-02-00 part number. However, you must verify compatibility by checking your engine's serial number and original part numbers, as Mariner used various manufacturers over the years.
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.
We can ship to virtually any address in the world with free shipping available for most regions.
For our typical US and Canadian customers , our shipping timeframes are as follows:
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.
As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.
We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.
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