Customer Service: info@jlm-marine.com
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Most new, unused items may be returned within 7 days of delivery, subject to our Returns Policy. A 20% processing/restocking fee may apply for returns that are not the result of our error. Original shipping charges are non-refundable.
If the return is due to our mistake (incorrect or defective item), we will cover the return shipping cost and issue a full refund.
EU customers are entitled to a 14-day cooling-off period in accordance with applicable consumer protection regulations. Certain exclusions may apply.
Refunds are issued after the returned item is received and inspected. Processing times may vary depending on shipping transit and payment provider handling, but most refunds are completed promptly.
To request a return, please contact us at info@jlm-marine.com with your order number for return authorization. For full terms, conditions, and exclusions, please refer to our complete Returns & Refunds Policy page.
This water pump impeller is engineered to fit Chrysler and Force outboard motors ranging from 9.9 HP to 25 HP, covering model years from the early 1970s through 1997. Designed for reliable cooling system performance, it ensures your engine maintains optimal operating temperature across a wide range of conditions.
Direct Replacement For: OEM part number 47-F436065-2, as well as superseded numbers F436065, F436065-1, and aftermarket equivalent Sierra 18-8903. This impeller provides a precise fit for original equipment specifications.
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number | Notes |
|---|---|---|
| Chrysler/Force (OEM) | 47-F436065-2 | Primary OEM reference |
| Chrysler/Force | F436065 | Superseded |
| Chrysler/Force | F436065-1 | Superseded |
| Sierra | 18-8903 | Aftermarket equivalent |
Confirm your engine model/year in the table below.
| Brand | Rated HP | Years | Notes |
|---|---|---|---|
| Chrysler/Force | 9.9 HP | 1979-1997 | All serial numbers |
| Chrysler/Force | 10 HP | 1974-1978 | All serial numbers |
| Chrysler/Force | 12 HP | 1979 | All serial numbers |
| Chrysler/Force | 15 HP | 1974-1997 | All serial numbers |
| Chrysler/Force | 20 HP | 1973-1978 | All serial numbers |
| Chrysler/Force | 25 HP | 1973-1978 | All serial numbers |
| Specification | Value |
|---|---|
| Number of Blades | 6 |
| Impeller Weight | Approximately 20 g |
| Diameter | 57.00 mm / 2.244 inch |
| Depth | 15.10 mm / 0.594 inch |
| Shaft Diameter | 12.90 mm / 0.508 inch |
| Material | Marine-grade hardened nylon and high-performance neoprene rubber |
| Corrosion Resistance | Chemical and marine corrosion resistant |
Your package includes:
Q: How do I confirm this impeller fits my Chrysler or Force outboard?
A: Cross-reference your engine's horsepower and year range with the compatibility table above. Verify your original impeller's OEM part number matches 47-F436065-2, F436065, F436065-1, or Sierra 18-8903.
Q: How often should I replace my water pump impeller?
A: Most manufacturers recommend replacing the impeller every 2–3 years or 200–300 hours of operation, whichever comes first. If you notice reduced water flow from the telltale, overheating, or visible blade damage, replace immediately.
Q: What are the signs of a failing impeller?
A: Common symptoms include weak or absent water stream from the telltale (indicator hole), engine overheating, steam from the powerhead, or the temperature alarm sounding. Inspect the impeller if any of these occur.
Q: Can I use petroleum-based grease when installing this impeller?
A: No. Petroleum products can damage neoprene rubber and cause premature failure. Use only glycerin, biodegradable dish soap, or water pump-specific lubricant during installation.
Q: Is this an OEM part or an aftermarket replacement?
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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