V-Belt – Fits Yanmar 6LY Series (Replaces Yanmar 119593-42280, 119593-42280E)
V-Belt – Fits Yanmar 6LY Series (Replaces Yanmar 119593-42280, 119593-42280E) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
V-Belt – Fits Yanmar 6LY Series (Replaces Yanmar 119593-42280, 1195...
Product Details
This V-Belt – Fits Yanmar 6LY Series Inboard Engines is designed for reliable power transmission in 4-stroke, 6-cylinder Yanmar marine diesel engines ranging from 315 to 440 HP. It serves as a crucial link for the alternator and water pump, ensuring your engine’s charging and cooling systems function correctly.
This belt is a direct replacement for Yanmar part numbers 119593-42280 and 119593-42280E.
- Installation: Fits as the primary Alternator/Generator Belt.
- Material: Durable Rubber/Fiber Composite designed for marine environments.
- Included: One A53 size V-Belt.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number | Notes |
|---|---|---|
| Yanmar | 119593-42280 | Superseded by 119593-42280E |
| Yanmar | 119593-42280E | Current Part |
Engine & Model Compatibility
Confirm your engine model in the table below to ensure accurate fitment.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yanmar | 6LY-STE | 350 | 4-Stroke | 119593-42280E | - |
| Yanmar | 6LYA-STE | 350 | 4-Stroke | 119593-42280E | - |
| Yanmar | 6LYA-UTE | 315 | 4-Stroke | 119593-42280E | - |
| Yanmar | 6LYA-STP | 370 | 4-Stroke | 119593-42280E | - |
| Yanmar | 6LY2A-STP | 440 | 4-Stroke | 119593-42280E | - |
| Yanmar | 6LY2A-UTP | 370 | 4-Stroke | 119593-42280E | - |
| Yanmar | 6LY2M-WDT | 330 | 4-Stroke | 119593-42280E | - |
| Yanmar | 6LY2M-WST | 376 | 4-Stroke | 119593-42280E | - |
| Yanmar | 6LYM-UTE | 315 | 4-Stroke | 119593-42280E | - |
| Yanmar | 6LYM-STE | 350 | 4-Stroke | 119593-42280E | - |
| Yanmar | 6LY-UTE | [Data Needed] | 4-Stroke | 119593-42280E | - |
Technical Specs
- Product Type
- V-Belt
- Installation
- Alternator/Generator Belt
- Fuel Type
- Diesel
- Housing Material
- Rubber/Fiber Composite
- Housing Color
- Black
- Dimensions
- A53 Size Standard
- Warranty
- 6-12 months (varies by retailer)
- Tensioning
- Deflects approximately 1 cm (½") under moderate thumb pressure on longest span
What’s in the Box
- 1 x V-Belt A53 (119593-42280E)
Installation Notes
- Ensure the engine is turned off and cooled completely.
- Disconnect the battery to prevent accidental starting.
- Loosen the alternator pivot bolt and any tensioner bolts.
- Note the existing belt's path around the pulleys.
- Relieve tension and remove the old belt.
- Inspect and clean all pulley grooves.
- Route the new belt, ensuring it is properly seated in all V-grooves.
- Tension the new belt by swiveling the alternator. A correctly tensioned belt deflects about 1 cm (½″) under moderate thumb pressure on the longest span.
- Tighten all adjuster and pivot bolts to factory torque specifications.
- Reconnect the battery.
- Start the engine and observe the belt to ensure it tracks smoothly.
- Recheck tension after a short run-in period and adjust if necessary.
Troubleshooting & FAQ
How do I confirm this belt fits my Yanmar engine?
This belt fits the 6LY series. The best way to ensure fitment is to check your engine model against the list in the "Engine & Model Compatibility" table above. Verifying the part number (119593-42280E) in your engine's service manual is also recommended.
What are signs that my V-belt needs replacing?
Common signs of a worn belt include persistent squealing noises (especially on startup), visible cracks, fraying, or glazing on the belt's surface. You may also notice decreased performance from your alternator (dimming lights, low battery voltage) or higher-than-normal engine temperatures.
How do I get the correct tension on the new belt?
Proper tension is crucial. As a rule of thumb, the belt should deflect about 1 cm (or ½ inch) when you press firmly with your thumb on the longest span between two pulleys. An over-tightened belt can damage bearings, while a loose one will slip and perform poorly.
What is the difference between this belt and the OEM version?
This is an aftermarket replacement part, not an original Yanmar component. It has been engineered to meet or exceed OEM specifications for material, dimensions, and durability. It offers comparable performance and fitment at a more accessible price point.
How often should this alternator belt be replaced?
There is no fixed replacement interval. It should be inspected during every routine service for signs of wear. We recommend replacing it proactively if your engine hours are high or if the belt shows any signs of cracking, fraying, or glazing to prevent unexpected failure.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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