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

Vendor: JLM Marine
Availability: In Stock
Product Type: Belt
$24.29
$24.29
Subtotal: $24.29

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drive belt for mercruiser volvo penta 57 74271q black toothed new in plastic packaging

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

$24.29

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

$24.29

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.

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:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

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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