SKU: 89542286636

25132-003100 V Belt for Yanmar 2GMLP 2GM20 2GMYE 3GM30 | JLM Marine

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Description

25132-003100 V Belt for Yanmar 2GMLP 2GM20 2GMYE 3GM30 | JLM MarineV Belt for Yanmar 2GMLP 2GM20 2GMYE 3GM30 JLM Marine This V Belt is engineered to fit Yanmar marine inboard engines, including the 2GMLP, 2GM20, 2GMYE, and 3GM30 series. Designed as a direct replacement for OEM part number 25132 003100, this belt ensures reliable performance for your Yanmar power plant. Whether you're performing routine maintenance or replacing a worn belt, this component is manufactured to meet OEM specifications and provides

V Belt for Yanmar 2GMLP 2GM20 2GMYE 3GM30 | JLM Marine

This V Belt is engineered to fit Yanmar marine inboard engines, including the 2GMLP, 2GM20, 2GMYE, and 3GM30 series. Designed as a direct replacement for OEM part number 25132-003100, this belt ensures reliable performance for your Yanmar power plant.

Whether you're performing routine maintenance or replacing a worn belt, this component is manufactured to meet OEM specifications and provides dependable service in marine environments.

  • Direct replacement for Yanmar OEM part number 25132-003100
  • Compatible with multiple Yanmar marine inboard engine models
  • Precision-engineered for proper fitment and performance

Part Number Cross-Reference

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

Brand Part Number
Yanmar 25132-003100

Compatible Engine Models

Confirm your engine model/year in the table below.

Brand Model
Yanmar 2GMLP
Yanmar 2GM20-YEU
Yanmar 2GM20C-YEU
Yanmar 2GMLP-C
Yanmar 3GM30-YEU
Yanmar 3GM30C-YEU
Yanmar 2GMYE-EC

Technical Specifications

Specification Value
OEM Part Number 25132-003100
Component Type V Belt
Application Yanmar Marine Inboard Engines

Package Contents

  • 1 × V Belt

Installation Guide

  1. Disconnect the battery and ensure the engine is completely cool before beginning work.
  2. Locate the V belt on your Yanmar engine and note its routing path around the pulleys.
  3. Release tension on the existing belt by adjusting the tensioner or alternator mounting bracket as applicable. Consult your engine's service manual for the specific tensioning mechanism.
  4. Carefully remove the old V belt from all pulleys, taking care not to damage surrounding components.
  5. Inspect all pulleys for wear, cracks, or misalignment; replace or repair as necessary before installing the new belt.
  6. Route the new V belt around the pulleys following the same path as the original belt.
  7. Adjust the tensioner or alternator bracket to apply the correct tension to the belt. The belt should deflect approximately ½ inch when moderate pressure is applied midway between pulleys.
  8. Verify that the belt is properly seated in all pulley grooves and is aligned correctly.
  9. Reconnect the battery and start the engine briefly to confirm proper belt operation and listen for unusual noises.
  10. Recheck belt tension after the initial run and adjust if necessary. Proper tension is critical for belt longevity and component performance.

Troubleshooting & FAQ

Q: How do I confirm this V belt fits my Yanmar engine?
A: Check the compatible engine models table above to verify your engine model is listed. Additionally, confirm that your engine uses OEM part number 25132-003100. If your model is listed but you notice any differences in dimensions or pulley configuration, do not proceed with installation.

Q: How often should I replace the V belt on my Yanmar engine?
A: Inspect the V belt at regular service intervals (typically every 100–200 operating hours). Replace the belt if you notice cracking, glazing, fraying, or excessive wear. Most belts should be replaced every 2–3 years or sooner if operating conditions are severe.

Q: What are the signs that my V belt is failing?
A: Common symptoms include squealing or chirping noises (especially during startup or under load), visible cracks or fraying on the belt surface, battery charging issues due to slipping on the alternator pulley, and overheating caused by reduced water pump performance.

Q: How tight should the V belt be after installation?
A: The belt should have approximately ½ inch of deflection when moderate thumb pressure is applied at the midpoint between pulleys. Over-tightening can cause premature bearing failure in the alternator or water pump, while under-tightening leads to slipping and reduced performance.

Q: Is this an OEM Yanmar belt or an aftermarket replacement?
A: This listing is an aftermarket replacement part manufactured to OEM specifications using comparable-grade materials in an ISO9002-certified facility.

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. Returns are accepted within our standard return window for unused items in original condition.

Important Notes

  • Verify that the product images and specifications match your original part before purchasing.
  • 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: Trusted manufacturer for over 20 years, supplying 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: 89542286636

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Chris
Port Orchard, US
★★★★★ 5
Perfect Jumbo Size with Hotel-Quality Comfort & Support
Color: White, Size: Queen(Pack of 2)
I recently purchased the Jumbo size pillows. After trying a week, I couldn’t be happier with them! The size is perfect—nice and full without feeling bulky. They provide just the right amount of medium support, keeping my head and neck comfortable whether I’m sleeping on my back or side. The 100% cotton cover feels soft and breathable, and the pillows stay cool throughout the night. I also love the gusseted design—it really helps the pillows maintain their shape and gives them that luxury hotel feel. Even after several nights of use, they haven’t gone flat. Another big plus is that they’re machine washable, which makes maintenance super easy. Overall, these Jumbo pillows are plush, supportive, and great quality for the price. Highly recommend!
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Reviewed in the United States on March 1, 2026
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Crystal
Phoenix, US
★★★★★ 5
Best pillows we’ve ever had!
Color: White, Size: King(Pack of 2)
These are so insanely comfortable! They have the perfect amount of softness and support. Not too flat, not too full, just right. You will sink into it like a big marshmallow!
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Reviewed in the United States on May 22, 2026
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Laura Moya
Omaha, US
★★★★★ 5
Comfortable pillows 🤩
Color: White, Size: Queen(Pack of 2), Color: White, Size: Queen(Pack of 2)
I bought the Serta Hotel Collection Bed Pillows (Queen size) and I absolutely loved them. They are super soft yet provide great support; they feel very comfortable and help make for a much better, more pleasant night's sleep. Plus, the fabric is cool and of high quality. I recommend them wholeheartedly!
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Reviewed in the United States on April 22, 2026
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Charlston T. Ang
Omaha, US
★★★★★ 5
Amazingly Comfortable — Like Sleeping in a Luxury Hotel Every Night
Color: White, Size: Queen(Pack of 2)
I rarely write reviews, but these Serta Hotel Collection pillows absolutely deserve one. From the very first night, they felt incredibly comfortable — soft yet supportive in all the right places. I tend to switch between back and side sleeping, and these pillows adjusted perfectly no matter my position. The 400-thread count cotton cover feels smooth and luxurious, and the gusseted edges give just the right amount of lift without feeling stiff. What really surprised me was how easy it was to adjust to them. Usually, it takes a few nights to get used to a new pillow, but I slept soundly from day one — no neck aches, no tossing and turning. They have that “hotel bed” feel — plush, breathable, and restful. Every morning, I wake up feeling like I stayed at a high-end resort. For the quality, comfort, and price, this set is an absolute win. Highly recommend to anyone looking to upgrade their sleep!
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Reviewed in the United States on February 8, 2026
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AW
Bozeman, US
★★★★★ 4
Amazing pillows!
Color: White, Size: Queen(Pack of 2)
These are fantastic pillows! A little background. I'm a side sleeper and toss and turn throughout the night. I've struggled with sleep issues for literally decades - insomnia, tossing and turning, waking up multiple times a night to use the bathroom, waking up way too early and not being able to get back to sleep. Every night it's a combo of those things or all of those things. I've also had some neck pain and stiffness for a couple of months. If you've ever dealt with that you know it will affect sleep which will then affect productivity and mood. It's a terrible spiraling and compounding thing to deal with, very stressful. I figured the contour pillow I had which once was actually helping was unfortunately the culprit. So I went on the hunt for another pillow. I ordered what I thought was the old Rejuvenite pillow (those were fabulous!) and got burned on a bait and switch. The pillow ended up being way too soft and gave me worse neck pain. Figuring I'd try to salvage what was a $115 pillow, I invested in a very thin pillow to put underneath. It was too high. Getting pretty frustrated, I ordered the cheaper Utopia pillows here on Amazon. Those actually were not terrible because they did take away my neck pain, but I was still tossing and turning at night and still feeling unrested in the morning. I decided I'd give it one last shot and luckily found these when they were discounted by a few bucks. They didn't have many reviews which was actually a great sign for me because it means the company lets their product speak for itself. I got these in several days and was thrilled to see upon opening the package that they were sealed and the directions do not require you to open the package and let them expand for 24 hours. You literally just take the edges and fluff 2-3 times and that's it! They are ready to go and they definitely do feel perfect after doing that. I was skeptical when I put them on my bed because they are soft and I worried they'd be too soft. I felt my head sink into the pillow a bit and then was surprised to feel at a certain point it just feels like the pillow is cradling your head with the right amount of support. I wouldn't describe it as firm, just soft but stable support. Really comfortable. But the real test was how it would perform during sleep. I'm so thrilled to report that I had an amazing night of sleep! No neck pain, no stiffness, zero tossing and turning, no insomnia, no waking up during the middle of the night, and no waking up early. I put my head down, fell asleep, and slept like a log for about 7.5 hours straight, which is literally unheard of in my world. I'm very lucky if I get 5 solid hours of sleep. I woke up and popped out of bed. My mood was great (still is later in the day) and I was not tired in the afternoon when I normally feel the fatigue kicking in. This is the first day for as long as I can remember that I do not feel that nagging tiredness behind my eyes and in my body that always seems to be a steady background actor in my life. I feel great and full of energy and I was able to tackle a bunch of tasks on my someday list. This is so promising I didn't want to wait to share. If you are on the fence and are dealing with similar issues to mine, I'd encourage you to just try these. What's also amazing is these come in a set. I'm only using one so I basically have another one to use if the first one ever fails. This is the best investment for sleep I've ever made! Update: Well, after a trial period I'm removing a star because my dreamy sleep was short lived. I started to wake up more frequently during the night with these and gave up midway through the night one night. I'm still using these for back support while I sit up or hang out in bed because they are still super comfortable that way and oddly these work well for naps. Hopefully, you have better luck than me!
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Reviewed in the United States on February 21, 2026

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