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 high-quality aftermarket drive belt is engineered for reliable performance in a wide range of MerCruiser, Volvo Penta, and OMC 4-stroke marine engines, from 17HP to 350HP. It serves as a direct replacement component, ensuring proper fit and function for various alternator, power steering, and sea water pump applications.
This belt directly replaces MerCruiser part numbers 57-68038, 57-74271Q, 57-74271T, 57-77274, 68038, 74271, 74271T, 77274A1; Volvo Penta part numbers 960281, 966903; and OMC part numbers 0509306, 0509308.
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
Brand | Part Number |
---|---|
MerCruiser | 57-68038 / 57-74271Q / 57-74271T / 57-77274 / 68038 / 74271 / 74271T / 77274A1 |
Volvo Penta | 960281 / 966903 |
OMC | 0509306 / 0509308 |
Confirm your engine model/year in the table below. For MerCruiser 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 | Stroke | Years | OEM Part No. | Notes |
---|---|---|---|---|---|
MerCruiser | 175/185/4.3L | 4-Stroke | 1985-92 | 57-74271Q | Ser: A331455-D714106 |
MerCruiser | 898 W/O HIGH MT P/S | 4-Stroke | 1977-84 | 57-74271Q | Ser: 4762210-6218461 |
MerCruiser | 898 W/ HIGH MT P/S | 4-Stroke | 1977-84 | 57-74271Q | Ser: 4762210-6218461 |
MerCruiser | 898/200/5.0L | 4-Stroke | 1985-95 | 57-74271Q | Ser: 6218462-F600999 |
MerCruiser | 205 | 4-Stroke | 1985-91 | 57-74271Q | Ser: A331455-D714369 |
MerCruiser | 225 | 4-Stroke | 1973-74 | 57-74271Q | Ser: 3385721-4166999 |
MerCruiser | 228 W/O HIGH MT P/S | 4-Stroke | 1977-82 | 57-74271Q | Ser: 4765100-6218461 |
MerCruiser | 228 W/ HIGH MT P/S | 4-Stroke | 1977-82 | 57-74271Q | Ser: 4765100-6218461 |
MerCruiser | 228/230/5.0L | 4-Stroke | 1983-95 | 57-74271Q | Ser: 6218462-F600999 |
MerCruiser | 228/230/5.0L MIE | 4-Stroke | 1978-87 | 57-74271Q | Ser: 4929030-B788151 |
MerCruiser | 233 | 4-Stroke | 1975-77 | 57-74271Q | Ser: 4173000-4902304 |
MerCruiser | 250 | 4-Stroke | 1977 | 57-74271Q | Ser: 4768000-4908849 |
MerCruiser | 255 MIE | 4-Stroke | 1977-78 | 57-74271Q | Ser: 4498701-4924564 |
MerCruiser | 255/260/5.7L MIE & Ski | 4-Stroke | 1978-86 | 57-74271Q | Ser: 4924565-B522505 |
MerCruiser | 260/5.7L MIE & Ski | 4-Stroke | 1987-93 | 57-74271Q | Ser: B522506-F024999 |
MerCruiser | 260 W/HM P/S | 4-Stroke | 1978-82 | 57-74271Q | Ser: 4908850-6218461 |
MerCruiser | 260 W/LM P/S | 4-Stroke | 1978-82 | 57-74271Q | Ser: 4908850-6218461 |
MerCruiser | 260/5.7L | 4-Stroke | 1983-95 | 57-74271Q | Ser: 6218462-F600999 |
MerCruiser | 350 MAG | 4-Stroke | 1986-95 | 57-74271Q | Ser: A635178-F600999 |
MerCruiser | 330 | 4-Stroke | 1977-81 | 57-74271Q | Ser: 4623115-6083144 |
MerCruiser | 340 (7.4L) | 4-Stroke | 1981-92 | 57-74271Q | Ser: 5889914-D715493 |
MerCruiser | 350 MIE | 4-Stroke | 1976 | 57-74271Q | Ser: 4501641-4623109 |
Volvo Penta | MD17C | 4-Stroke | 966903 | Alt | |
Volvo Penta | Various Models | 4-Stroke | 966903/960281 | Sea water pump applications | |
OMC | 0509306/0509308 |
Product Type | Drive Belt |
Installation | Direct OEM replacement |
Color | Black |
Warranty | 1-year against manufacturing defects |
1 x Drive Belt (Replaces 57-74271Q / 966903)
How can I be sure this belt fits my MerCruiser engine?
The most reliable method is to match your engine's model and serial number to the ranges listed in our compatibility table. The serial number is critical for confirming the correct fitment for MerCruiser engines.
My engine isn't on the list, but my old belt's part number matches. Will it fit?
Yes. If your current belt has one of the part numbers listed in our cross-reference section (e.g., 57-74271Q or 966903), this product is designed as a direct replacement.
What are the signs that my drive belt needs to be replaced?
Common indicators of a failing belt include loud squealing or chirping noises from the engine, visible cracks or fraying on the belt's surface, and inconsistent performance of belt-driven components like the alternator or water pump.
How often should I inspect my drive belt?
Regular visual inspection is recommended during routine engine maintenance. Look for glazing, cracks, or contamination from oil. We suggest replacing it based on visible wear or according to your engine manufacturer's recommended service intervals.
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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