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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 water pump impeller is designed for a precise fit on a range of Yamaha and Mercury/Mariner 2-stroke outboard motors. It is compatible with Yamaha 6HP and 8HP models from 1984 to 2009, as well as Mercury/Mariner 6HP (6C, 6D) and 8HP (8C) series engines.
Engineered as a direct replacement for the original component, this impeller ensures reliable performance for your cooling system. It is cross-compatible with multiple OEM and aftermarket part numbers, facilitating a straightforward replacement process.
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
Brand | Part Number |
---|---|
Yamaha | 6G1-44352-00-00 / 6G1-44352-00 |
Sierra | 18-3066 |
Mercury | 47-11590M |
Mallory | 9-45610 |
CEF | 500302 |
GLM | 89870 |
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.
For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.
Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
---|---|---|---|---|---|
6HP 6SJ | 6 | 2-Stroke | 1986 | 6G1-44352-00-00 | |
6HP 6LJ | 6 | 2-Stroke | 1986 | 6G1-44352-00-00 | |
6HP 6SH | 6 | 2-Stroke | 1987 | 6G1-44352-00-00 | |
6HP 6LH | 6 | 2-Stroke | 1987 | 6G1-44352-00-00 | |
6HP 6SG | 6 | 2-Stroke | 1988 | 6G1-44352-00-00 | |
6HP 6LG | 6 | 2-Stroke | 1988 | 6G1-44352-00-00 | |
6HP 6SF | 6 | 2-Stroke | 1989 | 6G1-44352-00-00 | |
6HP 6LF | 6 | 2-Stroke | 1989 | 6G1-44352-00-00 | |
6HP 6SD | 6 | 2-Stroke | 1990 | 6G1-44352-00-00 | |
6HP 6LD | 6 | 2-Stroke | 1990 | 6G1-44352-00-00 | |
6HP 6MSHP | 6 | 2-Stroke | 1991 | 6G1-44352-00-00 | |
6HP 6MLHP | 6 | 2-Stroke | 1991 | 6G1-44352-00-00 | |
6HP 6MSHQ | 6 | 2-Stroke | 1992 | 6G1-44352-00-00 | |
6HP 6MLHQ | 6 | 2-Stroke | 1992 | 6G1-44352-00-00 | |
6HP 6MSHR | 6 | 2-Stroke | 1993 | 6G1-44352-00-00 | |
6HP 6MLHR | 6 | 2-Stroke | 1993 | 6G1-44352-00-00 | |
6HP 6MSHS | 6 | 2-Stroke | 1994 | 6G1-44352-00-00 | |
6HP 6MLHS | 6 | 2-Stroke | 1994 | 6G1-44352-00-00 | |
6HP 6MSHT | 6 | 2-Stroke | 1995 | 6G1-44352-00-00 | |
6HP 6MLHT | 6 | 2-Stroke | 1995 | 6G1-44352-00-00 | |
6HP 6MSHU | 6 | 2-Stroke | 1996 | 6G1-44352-00-00 | |
6HP 6MLHU | 6 | 2-Stroke | 1996 | 6G1-44352-00-00 | |
6HP 6MSHV | 6 | 2-Stroke | 1997 | 6G1-44352-00-00 | |
6HP 6MLHV | 6 | 2-Stroke | 1997 | 6G1-44352-00-00 | |
6HP 6MSHW | 6 | 2-Stroke | 1998 | 6G1-44352-00-00 | |
6HP 6MLHW | 6 | 2-Stroke | 1998 | 6G1-44352-00-00 | |
6HP 6MSHX | 6 | 2-Stroke | 1999 | 6G1-44352-00-00 | |
6HP 6MLHX | 6 | 2-Stroke | 1999 | 6G1-44352-00-00 | |
6HP 6MSHY | 6 | 2-Stroke | 2000 | 6G1-44352-00-00 | |
6HP 6MLHY | 6 | 2-Stroke | 2000 | 6G1-44352-00-00 | |
8HP 8LN | 8 | 2-Stroke | 1984 | 6G1-44352-00-00 | |
8HP 8SN | 8 | 2-Stroke | 1984 | 6G1-44352-00-00 | |
8HP 8LK | 8 | 2-Stroke | 1985 | 6G1-44352-00-00 | |
8HP 8SK | 8 | 2-Stroke | 1985 | 6G1-44352-00-00 | |
8HP 8LJ | 8 | 2-Stroke | 1986 | 6G1-44352-00-00 | |
8HP 8SJ | 8 | 2-Stroke | 1986 | 6G1-44352-00-00 | |
8HP 8LH | 8 | 2-Stroke | 1987 | 6G1-44352-00-00 | |
8HP 8SH | 8 | 2-Stroke | 1987 | 6G1-44352-00-00 | |
8HP 8LG | 8 | 2-Stroke | 1988 | 6G1-44352-00-00 | |
8HP 8SG | 8 | 2-Stroke | 1988 | 6G1-44352-00-00 | |
8HP 8LF | 8 | 2-Stroke | 1989 | 6G1-44352-00-00 | |
8HP 8SF | 8 | 2-Stroke | 1989 | 6G1-44352-00-00 | |
8HP 8LD | 8 | 2-Stroke | 1990 | 6G1-44352-00-00 | |
8HP 8SD | 8 | 2-Stroke | 1990 | 6G1-44352-00-00 | |
8HP 8MSHP | 8 | 2-Stroke | 1991 | 6G1-44352-00-00 | |
8HP 8MLHP | 8 | 2-Stroke | 1991 | 6G1-44352-00-00 | |
8HP 8MSHQ | 8 | 2-Stroke | 1992 | 6G1-44352-00-00 | |
8HP 8MLHQ | 8 | 2-Stroke | 1992 | 6G1-44352-00-00 | |
8HP 8MSHR | 8 | 2-Stroke | 1993 | 6G1-44352-00-00 | |
8HP 8MLHR | 8 | 2-Stroke | 1993 | 6G1-44352-00-00 | |
8HP 8MSHS | 8 | 2-Stroke | 1994 | 6G1-44352-00-00 | |
8HP 8MLHS | 8 | 2-Stroke | 1994 | 6G1-44352-00-00 | |
8HP 8MSHT | 8 | 2-Stroke | 1995 | 6G1-44352-00-00 | |
8HP 8MLHT | 8 | 2-Stroke | 1995 | 6G1-44352-00-00 | |
8HP 8MSHU | 8 | 2-Stroke | 1996 | 6G1-44352-00-00 | |
8HP 8MLHU | 8 | 2-Stroke | 1996 | 6G1-44352-00-00 | |
8HP 8MSHV | 8 | 2-Stroke | 1997 | 6G1-44352-00-00 | |
8HP 8MLHV | 8 | 2-Stroke | 1997 | 6G1-44352-00-00 | |
8HP 8MSHW | 8 | 2-Stroke | 1998 | 6G1-44352-00-00 | |
8HP 8MLHW | 8 | 2-Stroke | 1998 | 6G1-44352-00-00 | |
8HP 8MSHX | 8 | 2-Stroke | 1999 | 6G1-44352-00-00 | |
8HP 8MLHX | 8 | 2-Stroke | 1999 | 6G1-44352-00-00 | |
8HP 8MSHY | 8 | 2-Stroke | 2000 | 6G1-44352-00-00 | |
8HP 8MLHY | 8 | 2-Stroke | 2000 | 6G1-44352-00-00 | |
8HP 8MSHZ | 8 | 2-Stroke | 2001 | 6G1-44352-00-00 | |
8HP 8MSHA | 8 | 2-Stroke | 2002 | 6G1-44352-00-00 | |
8HP 8MSHB | 8 | 2-Stroke | 2003 | 6G1-44352-00-00 | |
8HP 8MSHC | 8 | 2-Stroke | 2004 | 6G1-44352-00-00 | |
8HP 8MSHD | 8 | 2-Stroke | 2005 | 6G1-44352-00-00 | |
8HP 8MSH | 8 | 2-Stroke | 2005–2009 | 6G1-44352-00-00 | Years 2005-2009 models |
Model | Rated HP | Stroke | OEM Part No. | Notes |
---|---|---|---|---|
6C | 6 | 2-Stroke | 47-11590M | Serial # begins with 6H8 |
6D | 6 | 2-Stroke | 47-11590M | Serial # begins with 6H6 |
8C | 8 | 2-Stroke | 47-11590M | Serial # begins with 6G1 |
Specification | Value |
---|---|
Product Type | Water Pump Impeller |
Material | Neoprene Rubber / CR (Chloroprene Rubber) |
Number of Blades | 6 |
Impeller Height | 17.85mm (0.70 inch) / 18.0mm (0.71 inch) |
Overall Diameter | 39.56mm (1.57 inch) / 40.0mm (1.57 inch) |
Hub Shaft Diameter | 11.80mm (0.46 inch) / 11.9mm (0.47 inch) |
Weight | 10g (0.35 oz) |
Installation | Direct replacement; requires water pump housing disassembly |
Q: How do I confirm this fits my engine?
A: The best method is to compare your existing part's specifications and appearance with the images and data provided here. Check the compatible model tables and cross-reference your part number. When in doubt, use the linked guides to find your engine's model or serial number to be certain.
Q: What are the signs of a failing water pump impeller?
A: A weak or no water stream from the "tell-tale" port is the most common sign. Other indicators include engine overheating alarms, a hot-to-the-touch engine exterior, or reduced engine performance.
Q: How often should I replace the impeller?
A: For preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1-2 years, depending on usage (hours) and operating conditions (saltwater vs. freshwater). An impeller can fail from age and disuse, not just from high hours.
Q: Is it necessary to buy a full water pump repair kit?
A: While this listing is for the impeller only, a full kit (which includes the housing, gaskets, and wear plate) is recommended if the existing housing shows signs of warping, scoring, or corrosion, as this can cause premature failure of a new impeller.
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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