Customer Service: info@jlm-marine.com
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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 lower unit seal kit is designed for a wide range of Mercury/Mariner 30-125 HP 2-stroke and 4-stroke outboards (1991-2010). It is compatible with lower units featuring either a 3-jaw or 6-jaw reverse clutch. This kit fits USA serial numbers 0B209468 and newer, and Belgium serial numbers 9523034 and newer.
This kit directly replaces Mercury OEM part numbers 26-43035A4, 26-43035A3, 26-43035A2, and 26-43035A1. It also serves as an aftermarket replacement for Sierra 18-2626, GLM 87590, and Mallory 9-74200.
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
Brand | Part Number |
---|---|
Mercury | 26-43035A4 |
Mercury | 26-43035A3 |
Mercury | 26-43035A2 |
Mercury | 26-43035A1 |
Sierra | 18-2626 |
GLM | 87590 |
Mallory | 9-74200 |
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.
Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
---|---|---|---|---|---|---|
Mercury/Mariner | 2-Stroke | 100/115/125 | 2-Stroke | 1991+ | 26-43035A4 | USA 0B209468 and newer, Belgium 9523034 and newer, with either 3 or 6 jaw reverse clutch |
Mercury/Mariner | 4-Stroke BIGFOOT | 50 | 4-Stroke | 1991-2010 | 26-43035A4 | |
Mercury/Mariner | 3-cyl BIGFOOT | 60 | 4-Stroke | 1991-2010 | 26-43035A4 | |
Mercury/Mariner | 3-cyl | 70 | 4-Stroke | 1991-2010 | 26-43035A4 | USA 0A996142+ / BEL 9483121+ |
Mercury/Mariner | 3-cyl | 75 | 4-Stroke | 1991-2010 | 26-43035A4 | USA 0C222000+ / BEL 9589039+ |
Mercury/Mariner | 3-cyl | 80/90 | 4-Stroke | 1991-2010 | 26-43035A4 | |
Mercury/Mariner | 4-cyl | 100/115/125 | 4-Stroke | 1991-2010 | 26-43035A4 | |
Mercury/Mariner | 3-cyl | 30-90 | 2-Stroke | 1991-2010 | 26-43035A4 | As reported by EMP |
Mercury/Mariner | 4-cyl | 45-90 | 2-Stroke | 1991-2010 | 26-43035A4 | As reported by EMP |
Force | Outboard | 30-125 | 2-Stroke | 1991-1999 | 26-43035A4 | Compatibility reported by various retailers |
Specification | Value |
---|---|
Product Type | Lower Unit/Gearcase Seal Kit |
Installation | Direct replacement |
Other Technical Attributes | For applications with either 3-jaw or 6-jaw reverse clutch |
Q: How do I confirm this seal kit fits my specific Mercury outboard?
A: Check your engine's serial number. This kit is confirmed to fit USA models 0B209468 and newer and Belgium models 9523034 and newer. It is designed for the wide range of 30-125 HP 2-stroke and 4-stroke models listed in our compatibility table.
Q: What are the signs that my lower unit seals are failing?
A: Common signs of seal failure include milky or watery gear oil, which indicates water intrusion. You may also notice visible oil leaks around the propeller shaft or driveshaft, or find a metallic sheen in the drained oil, suggesting wear from poor lubrication.
Q: Is this kit compatible with both 3-jaw and 6-jaw clutches?
A: Yes. This kit is specifically designed to work for lower units equipped with either the 3-jaw or 6-jaw reverse clutch, making it a versatile replacement for the specified HP and year range.
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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