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25132-003100 V Belt for Yanmar 2GMLP 2GM20 2GMYE 3GM30 | JLM Marine
- $33.76
- $33.76
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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
- Disconnect the battery and ensure the engine is completely cool before beginning work.
- Locate the V belt on your Yanmar engine and note its routing path around the pulleys.
- 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.
- Carefully remove the old V belt from all pulleys, taking care not to damage surrounding components.
- Inspect all pulleys for wear, cracks, or misalignment; replace or repair as necessary before installing the new belt.
- Route the new V belt around the pulleys following the same path as the original belt.
- 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.
- Verify that the belt is properly seated in all pulley grooves and is aligned correctly.
- Reconnect the battery and start the engine briefly to confirm proper belt operation and listen for unusual noises.
- 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.
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