SKU: 84062161035

Drive Belt for MerCruiser, Volvo Penta, OMC 17HP-350HP Models (57-74271Q)

Sale price$19.75 Regular price$21.95
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Description

Drive Belt for MerCruiser, Volvo Penta, OMC 17HP-350HP Models (57-74271Q)Drive Belt Fits MerCruiser, Volvo Penta, OMC 17HP 350HP (Replaces 57 74271Q, 966903) 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

Drive Belt – Fits MerCruiser, Volvo Penta, OMC 17HP-350HP (Replaces 57-74271Q, 966903)

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.

  • Designed for a direct, hassle-free replacement of your original OEM belt.
  • Constructed from durable materials to withstand the harsh marine environment.
  • Backed by a 1-year warranty against manufacturing defects for peace of mind.

Part Number Cross-Reference

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

Compatible Engine Models

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

Technical Specifications

Product Type Drive Belt
Installation Direct OEM replacement
Color Black
Warranty 1-year against manufacturing defects

Package Contents

1 x Drive Belt (Replaces 57-74271Q / 966903)

Installation Guide

  1. Safety First: Ensure the engine is completely cool and turned off. Disconnect the boat's battery.
  2. Locate the Belt: Identify the existing drive belt and its path around the engine pulleys. Taking a photo can be helpful.
  3. Release Tension: Use the appropriate tool to loosen the idler or tensioner pulley, releasing tension from the belt.
  4. Remove Old Belt: Carefully slide the old belt off all pulleys.
  5. Inspect Pulleys: Before installing the new belt, spin each pulley by hand. Check for wobble, roughness, or signs of wear.
  6. Route New Belt: Following your photo or the engine diagram, route the new belt around the pulleys, ensuring it sits correctly in the grooves.
  7. Apply Tension: Carefully re-engage the tensioner to apply the correct amount of tension to the new belt. Do not overtighten.
  8. Final Check: Reconnect the battery. Briefly start the engine to ensure the belt tracks properly and operates smoothly without noise.

Troubleshooting & FAQ

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.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 84062161035

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Reviewed in the United States on June 4, 2026
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Jessie A.
Battle Creek, US
★★★★★ 5
Great quality at a great price range!
Color: Navy Blue
Works very well for the day to day. Great quality at a great price range. Would definitely buy again if needed.
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Reviewed in the United States on May 14, 2026
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Allana W
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★★★★★ 5
Solid case.
Color: Sky-Blue
Love this case. Fits great and the color is great! The keyboard is nice and it even has a little spot for a stylist.
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Reviewed in the United States on June 3, 2026
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Nosiest
Phoenix, US
★★★★★ 4
Cheap and good
Color: Black, Color: Black
I chose the color black and it gives a really nice look, especially with the multicolor led lights around the keys. It is very easy to clean and you can shut off the keyboard to prevent any mess with the iPad. The magnet is very nice and keeps the keyboard in place. The keyboard doesn’t easily slip or anything so it holds the iPad very well. Only bad thing is that over time the iPad begins to scrape off the pain and it leaves your keyboard with some white spots all over :/ but if looks isn’t something that you care about, this is the keyboard for you. Don’t use it for gaming because there is a delay in functionality when you press a key and then try to use the pad. Also, you have to press the keys a bit harder than the usual keyboard. But for the price? This is a great item! Definitely worth my money
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Reviewed in the United States on January 18, 2026
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Grant In Austin
Belleville, US
★★★★★ 5
Great quality at a remarkable price
Color: Navy Blue
I got an iPad and was looking for a cover to protect it. I came across this case that has a Bluetooth keyboard. It seems to be working great. It was less than $30 and had 4.5 stars with over 4k reviews. The keyboard is magnetic and detachable, so I’ve got lots of configuration options. The keyboard pairs easily and allows you to use the iPad like a laptop. The point of an iPad a lot in one shot is kind of the touchscreen, but when I’m typing a lot of text as once (like now), it’s really nice to have a physical keyboard and touchpad. The keys are comfortably spaced and I’m comfortable typing on it. There is no additional setup for the keyboard besides pairing it to the iPad. At that point, all the cursor and keyboard features are immediately available. The case is well built and has nice features like a slot to hold a stylus and multiple grooves to set your viewing angle. It’s configured to be used in landscape mode, but if for some reason you wanted to use it in portrait mode, you can pop the keyboard off to lay it flat. Especially for the price, this is an exceptionally nice iPad cover.
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