Customer Service: info@jlm-marine.com
Free shipping. No Minimum Purchase
25132-003000 V Belt for Yanmar 2GM 2GM20 2GML 2GMLP 2GMYE 2GMZ 3GM 3GMD 3GMLE 3GM30 6KH 6KHA 6KHK 6KHM 6KHS | JLM Marine
- $33.76
- $33.76
- Unit price
- per
Couldn't load pickup availability
Free Shipping
Free standard shipping on all orders
Worry-Free Returns
Learn More.
V Belt for Yanmar 2GM 2GM20 2GML 2GMLP 2GMYE 2GMZ 3GM 3GMD 3GMLE 3GM30 6KH 6KHA 6KHK 6KHM 6KHS
This V Belt is designed to fit a wide range of Yanmar marine inboard engines, including the 2GM, 3GM, and 6KH series. Engineered for reliable performance in marine environments, this belt ensures proper power transmission for your engine's alternator and water pump systems.
This aftermarket replacement belt is a direct replacement for OEM part number 25132-003000, providing dependable performance at an excellent value. Suitable for both professional marine mechanics and DIY enthusiasts performing routine maintenance.
- Compatible with multiple Yanmar 2GM, 3GM, and 6KH engine variants
- Direct fit replacement for OEM #25132-003000
- Essential component for engine cooling and electrical system operation
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Yanmar | 25132-003000 |
Compatible Engine Models
Confirm your engine model/year in the table below.
| Brand | Model |
|---|---|
| Yanmar | 2GM(F) |
| Yanmar | 2GM20-YEU |
| Yanmar | 2GM20C-YEU |
| Yanmar | 2GML |
| Yanmar | 2GMLP |
| Yanmar | 2GMYE-EC |
| Yanmar | 2GMZ |
| Yanmar | 3GM(F) |
| Yanmar | 3GMD |
| Yanmar | 3GMLE |
| Yanmar | 3GM30-YEU |
| Yanmar | 3GM30C-YEU |
| Yanmar | 6KH |
| Yanmar | 6KH-UT |
| Yanmar | 6KH-UTE |
| Yanmar | 6KH-STE |
| Yanmar | 6KH-ST |
| Yanmar | 6KH-ET |
| Yanmar | 6KHA-ET |
| Yanmar | 6KHK-ST |
| Yanmar | 6KHK-ST1 |
| Yanmar | 6KHK-UT1 |
| Yanmar | 6KHM-STE |
| Yanmar | 6KHS |
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 25132-003000 |
| Application | Yanmar Marine Inboard Engines |
| Component Type | V Belt |
Package Contents
This package includes the following components:
- 1 × V Belt
Installation Guide
- Disconnect the battery and ensure the engine is completely cool before beginning work.
- Locate the existing V belt on your Yanmar engine, noting its routing path around the pulleys.
- Loosen the alternator or tensioner mounting bolts to release tension on the old belt.
- Remove the old V belt by sliding it off the pulleys.
- Inspect all pulleys for wear, damage, or debris, and clean if necessary.
- Route the new V belt around the pulleys following the same path as the original.
- Adjust the alternator or tensioner position to achieve proper belt tension.
- Tighten all mounting bolts securely once proper tension is achieved.
- Check belt tension by pressing on the belt midway between pulleys; it should deflect approximately ½ inch with moderate pressure.
- Rotate the engine by hand to ensure the belt runs smoothly without slipping or misalignment.
- Reconnect the battery and start the engine to verify proper operation.
- Re-check belt tension after the first few hours of operation and adjust if needed.
Troubleshooting & FAQ
Q: How do I confirm this V belt fits my Yanmar engine?
A: Cross-reference your engine model with our compatibility table above. Verify that your original belt matches OEM part number 25132-003000 to ensure proper fitment.
Q: How often should I replace the V belt on my Yanmar engine?
A: Inspect your V belt every 100 hours of operation or annually. Replace it if you notice cracking, glazing, fraying, or excessive wear, or every 2–3 years as preventive maintenance.
Q: What are the signs that my V belt is failing?
A: Common symptoms include squealing noises during operation, overheating due to water pump failure, battery not charging, visible cracks or glazing on the belt surface, or slipping under load.
Q: How do I achieve the correct belt tension during installation?
A: The belt should deflect approximately ½ inch when pressed firmly midway between pulleys. Too tight can damage bearings; too loose will cause slipping and premature wear.
Q: Is this an OEM or aftermarket belt?
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.
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.
Parts Finder
Use our Parts Finder to quickly locate the correct parts for your engine. Search by Make, HP, Stroke, Model, Year, and SN.
Select only the fields available — you don’t need to fill all options (e.g., leave Year blank if not applicable).
Our database is currently being updated and expanded. More models, including Yamaha, Mercury, and Suzuki, are being verified and uploaded.
Our database is currently being updated and expanded. More models, including Yamaha, Mercury, and Suzuki, are being verified and uploaded.
- Choosing a selection results in a full page refresh.