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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 kit is designed for a wide range of Mercury/Mercruiser and Force/Chrysler outboard engines. It fits most 65–225 HP 2-stroke Mercury/Mercruiser models from the 1960s to the 1990s, as well as Alpha One, MR, and pre-Alpha sterndrive units (serial numbers 2495186–0D469858). It is also compatible with 65–225 HP Force/Chrysler outboards that use short-vane impellers.
This kit serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 47-89984T5, 47-89984T4, 47-89984T6, and 47-89984Q5, as well as Sierra 18-3517, GLM 12120, Mallory 9-48307, and Sierra 18-3017.
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
Brand | Part Number |
---|---|
Mercury | 47-89984T5 / 47-89984T4 / 47-89984T6 / 47-89984Q5 |
Sierra | 18-3517 / 18-3017 |
GLM | 12120 |
Mallory | 9-48307 |
Confirm your engine model/year in the table below. 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 |
---|---|---|---|---|---|
65 HP (4 cylinder) | 65 | 2-Stroke | 1963-1976 | 47-89984T5 | Serial 2803562-2874263, 2997439-3293183 |
70 HP | 70 | 2-Stroke | 1961-1967 | 47-89984T5 | Serial 1413611-1436114, 1482212-1503458 |
700 E-2 (6 cyl) | 70 | 2-Stroke | 47-89984T5 | ||
75 HP (4 cyl) | 75 | 2-Stroke | 1984-1988 | 47-89984T5 | Serial 6432901 & UP |
80 HP | 80 | 2-Stroke | 1969-1983 | 47-89984T5 | Serial 1355468-3493912 |
80 HP (6 cyl) | 80 | 2-Stroke | 47-89984T5 | Serial 1335465-1398629 | |
80 HP (4 cyl) | 80 | 2-Stroke | 47-89984T5 | Serial 4831999-6432900 | |
85 HP (4 cyl) | 85 | 2-Stroke | 1973-1977 | 47-89984T5 | 850XS models |
850 E & EL (6 cyl) | 85 | 2-Stroke | 47-89984T5 | Models E-1, EL-1 | |
850 XS (4 cyl) | 85 | 2-Stroke | 47-89984T5 | Serial 3493913-4831998 | |
90 HP (6 cyl) | 90 | 2-Stroke | 1978-1986 | 47-89984T5 | Serial 4845301 & UP |
95 HP (6 cyl) | 95 | 2-Stroke | 1966-1967 | 47-89984T5 | |
100 HP (1000SS) | 100 | 2-Stroke | 1962-1969 | 47-89984T5 | |
105 HP JET | 105 | 2-Stroke | 1994-1995 | 47-89984T5 | |
110/115/125/135/140/150 HP (6 cyl) | 110-150 | 2-Stroke | 1966-1988 | 47-89984T5 | Models 1100/1150/1250/1350/1400/1500 |
V135 CARB | 135 | 2-Stroke | 1986-1988 | 47-89984T5 | |
V135 EFI | 135 | 2-Stroke | 1998 | 47-89984T5 | |
140 JET | 140 | 2-Stroke | 1994-1995 | 47-89984T5 | |
V150 CARB | 150 | 2-Stroke | 1978-1985 | 47-89984T5 | |
V150 CARB/EFI/DFI | 150 | 2-Stroke | 1986-1988 | 47-89984T5 | |
V150 XR2/4/6, Mag II | 150 | 2-Stroke | 1978-1988 | 47-89984T5 | |
V175 (V1750) | 175 | 2-Stroke | 1976-1988 | 47-89984T5 | |
V175/V200 CARB/EFI/DFI | 175-200 | 2-Stroke | 1985-1988 | 47-89984T5 | |
V200 | 200 | 2-Stroke | 1978-1981 | 47-89984T5 | |
V220 LASER | 220 | 2-Stroke | 47-89984T5 | ||
V225 2.4L | 225 | 2-Stroke | 47-89984T5 |
Model | Years | OEM Part No. | Notes |
---|---|---|---|
MerCruiser I (MC1) | 47-89984T5 | S/N 2495186 & Later | |
MerCruiser R | 47-89984T5 | ||
MerCruiser MR | 47-89984T5 | ||
Alpha One | Up to 1990 | 47-89984T5 | S/N range 6854393-0D469858 |
Product Type | Water Pump Impeller Kit |
Installation | Direct OEM replacement |
Connection | Direct drive shaft mount |
Dimensions | Impeller diameter: 59.6 mm (2.35 in) Impeller height: 33.6-33.8 mm (1.32-1.33 in) Hub shaft diameter: 22.2 mm (0.87 in) |
Weight | 99.3 g (3.5 oz) |
Fitting Type | Direct shaft mount |
Other Technical Attributes | 6 blade impeller design made of neoprene rubber with brass hub |
How do I confirm this impeller kit fits my Mercury engine?
This kit fits a wide range of Mercury/Mercruiser outboards (65–225 HP, '60s–'90s) and Alpha One/MR sterndrives (serial # 2495186–0D469858). The best method is to check your model, HP, and serial number against the detailed compatibility tables on this page. You can also cross-reference your existing part number with those listed, such as Mercury 47-89984T5.
What are the signs that my water pump impeller needs to be replaced?
Common signs of a failing impeller include a weak or non-existent water stream from the "tell-tale" outlet, the engine overheating at idle or low speeds, or a high-temperature alarm sounding. Visually, a worn impeller will have cracked, brittle, or permanently bent vanes.
How often should I replace the water pump impeller?
As a preventative maintenance item, it is generally recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of use, depending on operating conditions. More frequent replacement may be needed if you operate in sandy, silty, or saltwater environments.
OEM vs. Aftermarket?
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.
How fast do you ship and how much does it cost?
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.
What is your warranty and return policy?
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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