SKU: 31400637570

57-880566Q14 Alternator Drive Belt for Mercury Verado | JLM Marine

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Description

57-880566Q14 Alternator Drive Belt for Mercury Verado | JLM MarineAlternator Drive Belt for Mercury Verado 135 400HP Outboards This alternator drive belt is engineered to fit Mercury Verado outboard engines ranging from 135HP to 400HP. Designed as a direct replacement for Quicksilver OEM serpentine belts, it ensures reliable power transmission from the crankshaft to the alternator, maintaining optimal charging performance in demanding marine environments. Direct Replacement For: Mercury OEM part numbers 57 835392Q14

Alternator Drive Belt for Mercury Verado 135-400HP Outboards

This alternator drive belt is engineered to fit Mercury Verado outboard engines ranging from 135HP to 400HP. Designed as a direct replacement for Quicksilver OEM serpentine belts, it ensures reliable power transmission from the crankshaft to the alternator, maintaining optimal charging performance in demanding marine environments.

Direct Replacement For: Mercury OEM part numbers 57-835392Q14 and 57-880566Q14. This belt is compatible with L6 Verado models including 225HP, 250HP, 275HP, 300HP, 350HP, and 400HP configurations.

  • High-quality serpentine belt construction for durability in saltwater conditions
  • Fits multiple Mercury Verado horsepower ratings from 135HP through 400HP
  • Single belt included per package

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Mercury / Quicksilver 57-835392Q14
Mercury / Quicksilver 57-880566Q14

Compatible Engine Models

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 Notes
Mercury Verado 135HP Outboard alternator drive belt
Mercury Verado 150HP Outboard alternator drive belt
Mercury Verado 175HP Outboard alternator drive belt
Mercury Verado 200HP Outboard alternator drive belt
Mercury Verado 225HP L6 alternator serpentine belt
Mercury Verado 250HP L6 alternator serpentine belt
Mercury Verado 275HP L6 alternator serpentine belt
Mercury Verado 300HP L6 alternator serpentine belt
Mercury Verado 350HP Outboard alternator drive belt
Mercury Verado 400HP Outboard alternator drive belt

Technical Specifications

Specification Value
Type Outboard Drive Belt
Application Alternator / Serpentine Belt
Motor & Engine Type Mercury 135-400HP Models Outboards
OEM Part Numbers 57-835392Q14, 57-880566Q14

Package Contents

This package includes the following component:

  • 1 x Alternator Drive Belt

Installation Guide

  1. Disconnect the battery: Remove the negative terminal to prevent electrical hazards during installation.
  2. Access the belt housing: Remove the engine cover and any protective cowling to expose the alternator belt assembly.
  3. Relieve belt tension: Locate the belt tensioner and use the appropriate tool to release tension on the old belt.
  4. Remove the old belt: Carefully slide the worn belt off the pulleys, noting the routing path for reference.
  5. Inspect pulleys: Check all pulleys for wear, damage, or debris. Clean if necessary before installing the new belt.
  6. Route the new belt: Follow the same path as the original belt, ensuring it sits properly in all pulley grooves.
  7. Apply tension: Use the tensioner mechanism to apply proper tension to the new belt according to manufacturer specifications.
  8. Verify alignment: Confirm the belt is seated correctly on all pulleys with no twists or misalignment.
  9. Reinstall covers: Replace all protective cowling and engine covers securely.
  10. Reconnect the battery: Reattach the negative terminal and ensure a secure connection.
  11. Test operation: Start the engine and verify the alternator is charging properly. Listen for any unusual belt noise.
  12. Final inspection: After a short test run, recheck belt tension and alignment to ensure proper installation.

Troubleshooting & FAQ

Q: How do I confirm this belt fits my Mercury Verado engine?
A: Check your engine's horsepower rating (135-400HP) and verify your current belt's part number matches 57-835392Q14 or 57-880566Q14. You can also consult the compatibility table above or reference Mercury's parts diagrams using your engine's serial number.

Q: What are the signs that my alternator belt needs replacement?
A: Common symptoms include squealing noises during engine operation, visible cracking or fraying on the belt surface, charging system warnings, dimming instruments, or a dead battery after running. Inspect the belt regularly for glazing, excessive wear, or looseness.

Q: How often should I replace the alternator belt on my Verado?
A: Mercury recommends inspecting the belt at every 100-hour service interval or annually. Replace the belt if you notice cracks, fraying, glazing, or every 2-3 years as preventative maintenance, even if it appears functional.

Q: Can I install this belt myself or do I need a professional?
A: If you have mechanical experience and the proper tools to access the belt tensioner, installation is straightforward. However, improper tension or routing can damage the alternator or cause premature belt failure, so professional installation is recommended if you're uncertain.

Q: Is this an OEM belt or an aftermarket replacement?
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.

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: 31400637570

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Ann
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★★★★★ 5
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Size: 18in, Style: Sport
This ball launcher takes a bit of getting. used to, but it is really helpful for those of us who are not MLB pitchers! The launcher itself is a sturdy plastic that is not brittle yet not soft; when the ball is launched there is no destructive bending in the shaft. The handle is padded and ergonomically sound while the cup end cradles the ball but has cut-outs on each side for easy loading and unloading of the ball. It did take a bit of practice for me to get the hang of it, but for my husband and son it was much easier. The launcher works well to help us older, non-gifted athletes launch the ball farther and faster while saving the shoulder, elbow, and wrist (important if there is any arthritis). The ball fits nicely into the cup and releases easily. The 2.5 size was too small for my Doberman, so we opted for the 3.5 in launcher. This smaller launcher and ball are now in the employ of my sister and her husband for their retriever-border collie mix, an 18 month old little fireball!. This is just the right size for her. My sister's husband has difficulty with arthritis and is neither quick on his feet nor able to stand very long. So the launcher comes in very handy. He can actually sit in a lawn chair and throw the ball repeatedly when their dog retrieves and returns it to him. That is a win- win! Top 3 Likes: -Easy to use -Helps older pet owner -Drives the ball farther and faster Top 3 Dislikes: -With repeated uses the edges of the launcher appear to get scuffed and scratched -Some ingrained staining on the edges persists requiring scrubbing to remove -There is a mild worry that with time the launcher may snap
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Reviewed in the United States on September 4, 2024
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RAWN001
Chelsea, US
★★★★★ 5
My dog loves it
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I am amazed at how far I can throw a tennis ball. My dog and I absolutely love this. What happens to work well with the squeaky balls?I get on amazon as well. I have one of these at home, And I keep another one in the truck. Very durable, The balls have good bounce, My dog and I have a lot of fun with it. My dog doesn't chew much on balls, But this one seems like it's going to stand out, I love the versatility, Hey can handle almost ending ball that same size. Are you solid rubber bouncy balls, Squeak. Ing tuba balls, Whiffle balls with all the holes in it, Even the squeaky chewing balls. As long as there are that same size. love the product. I've been using them for a few years.
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Reviewed in the United States on July 22, 2024
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LRBuyer
Pawtucket, US
★★★★★ 5
Great product
Style: Sport, Size: Large
This is a lifesaver. My lab will chase the ball all day and this saves the arms and shoulders. A little bit of a learning curve to use but I would definitely recommend
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Reviewed in the United States on May 24, 2026
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Jamie
Omaha, US
★★★★★ 5
Labs love this!!!
Style: Sport, Size: Large
Our Lab LOVES everything about this thing! Recommend getting extra durable balls as the 1 included fell apart in 1 hour. I have a very energetic Lab retriever that we have to force to stop playing ball so he does not overheat. That & the force with which you can throw this ball did not help keeping it from splitting it in 2 in less than 1 hour. This is worth the money for the extra throwing power & distance but do invest in the ULTRA strong ball for dogs like retrievers! Also, be sure to order the correct SIZE OF BALL, specific to each different size of throwing wand. My fav thing about this item is #1 the joy my dog gets from the new challenge of racing to catch longer throws, & #2 I don't have to get my hands covered in dog slobber!! He has gotten to where he can almost put it in the cup himself so I won't waste time throwing the ball again! Man, I love that dog!!! ❤️
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Reviewed in the United States on November 1, 2023
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Stacy H
Dallas, US
★★★★★ 5
Must-Have for Active Dogs!
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The Chuckit Sport 26L Dog Ball Launcher has been a game-changer for my large dog! My 80-pound Labrador loves to play fetch, and this launcher makes it so much easier and more enjoyable for both of us. The 26” length gives me the leverage to throw the ball much farther than I could by hand, which really helps burn off my dog’s energy. The included large ball (3”) is the perfect size for big dogs, and I appreciate that it’s made from durable rubber, so it withstands a lot of chewing and rough play. What I really love is that the launcher is so lightweight and easy to use. I can play fetch with my dog for extended periods without my arm getting tired. The ergonomic handle also provides a comfortable grip, which is a nice touch. If you have a large, active dog, the Chuckit Sport 26L is a must-have. It’s well-made, durable, and makes fetch more fun for both you and your dog. Highly recommend!
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