119593-42280E Alternator Belt for Yanmar 6LY400 6LY 6LY2 6LYA 6LYM 6LY440 6LY2M 6LY2A | JLM Marine
SKU: 4820607873

119593-42280E Alternator Belt for Yanmar 6LY400 6LY 6LY2 6LYA 6LYM 6LY440 6LY2M 6LY2A | JLM Marine

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Description

119593-42280E Alternator Belt for Yanmar 6LY400 6LY 6LY2 6LYA 6LYM 6LY440 6LY2M 6LY2A | JLM MarineAlternator Belt for Yanmar 6LY400, 6LY, 6LY2, 6LYA, 6LYM, 6LY440, 6LY2M, 6LY2A Marine Engines This alternator belt is designed for Yanmar 6 cylinder marine diesel engines, including the 6LY400, 6LY, 6LY2, 6LYA, 6LYM, 6LY440, 6LY2M, and 6LY2A series. Engineered to meet OEM specifications, this belt ensures reliable power transmission from your engine to the alternator for consistent electrical system performance. This V belt directly replaces Yanmar

Alternator Belt for Yanmar 6LY400, 6LY, 6LY2, 6LYA, 6LYM, 6LY440, 6LY2M, 6LY2A Marine Engines

This alternator belt is designed for Yanmar 6-cylinder marine diesel engines, including the 6LY400, 6LY, 6LY2, 6LYA, 6LYM, 6LY440, 6LY2M, and 6LY2A series. Engineered to meet OEM specifications, this belt ensures reliable power transmission from your engine to the alternator for consistent electrical system performance.

This V-belt directly replaces Yanmar OEM part number 119593-42280E, providing a cost-effective aftermarket solution for maintaining your inboard engine's charging system.

  • Precision-engineered for Yanmar 6-cylinder marine diesel engines
  • Direct replacement for OEM part 119593-42280E
  • Ensures reliable alternator operation and electrical charging

Part Number Cross-Reference

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

Brand Part Number
Yanmar 119593-42280E

Compatible Engine Models

Confirm your engine model/year in the table below.

Brand Model
Yanmar 6LY400
Yanmar 6LY-UT
Yanmar 6LY-STZY
Yanmar 6LY-STE
Yanmar 6LY2-WDTZY
Yanmar 6LY2-WST
Yanmar 6LY-STM
Yanmar 6LY2-WDT
Yanmar 6LYA-STP
Yanmar 6LYA-UTE(P)
Yanmar 6LYA-STE(P)
Yanmar 6LYA-STE
Yanmar 6LYM-UTEHD
Yanmar 6LY440
Yanmar 6LY2M-WDT
Yanmar 6LY-UTM
Yanmar 6LY-ST
Yanmar 6LYA-UTE
Yanmar 6LY2-STE
Yanmar 6LY-UTZY
Yanmar 6LY-UTE
Yanmar 6LY2M-WST
Yanmar 6LYM-UTE
Yanmar 6LYM-STE
Yanmar 6LY2A-UTP
Yanmar 6LY2A-STP

Technical Specifications

Specification Value
OEM Part Number 119593-42280E
Product Type Alternator Belt (V-Belt)
Application Yanmar 6-Cylinder Marine Diesel Engines

Package Contents

  • 1 × Alternator Belt (V-Belt)

Installation Guide

  1. Disconnect the battery: Always disconnect the negative battery terminal before beginning any work on the engine to prevent electrical hazards.
  2. Locate the alternator belt: Identify the existing alternator belt on your Yanmar engine, typically routed around the crankshaft pulley and alternator pulley.
  3. Relieve belt tension: Loosen the alternator adjustment bolt and pivot bolt to create slack in the old belt. Some models may have a belt tensioner that needs to be released.
  4. Remove the old belt: Slide the old belt off the pulleys and inspect the pulleys for wear, damage, or debris.
  5. Clean the pulleys: Wipe down all pulley surfaces to remove oil, dirt, or residue that could cause the new belt to slip.
  6. Route the new belt: Position the new alternator belt around the crankshaft pulley and alternator pulley following the original routing path.
  7. Adjust belt tension: Move the alternator outward to apply proper tension to the belt. The belt should deflect approximately 10–15mm when pressed midway between pulleys.
  8. Tighten mounting bolts: Secure the alternator adjustment bolt and pivot bolt to the manufacturer's specified torque settings.
  9. Check belt alignment: Verify that the belt is properly seated in all pulley grooves and runs straight without twisting.
  10. Reconnect the battery: Reconnect the negative battery terminal.
  11. Start the engine and inspect: Run the engine at idle and check for proper belt operation, unusual noises, or vibration. Re-check tension after the first hour of operation.

Troubleshooting & FAQ

How do I confirm this alternator belt fits my Yanmar engine?
Verify your engine model number against the compatibility table above. Cross-reference the OEM part number 119593-42280E with your engine's service manual or existing belt to ensure proper fitment.

What are the signs that my alternator belt needs replacement?
Common signs include squealing noises during startup or acceleration, visible cracks or fraying on the belt surface, poor battery charging performance, or dashboard warning lights indicating low voltage or charging issues.

How often should I replace the alternator belt on my Yanmar engine?
Yanmar recommends inspecting the alternator belt every 250 operating hours and replacing it every 1,000–1,500 hours or sooner if signs of wear are present. Belts exposed to saltwater environments may require more frequent replacement.

Can I adjust the belt tension myself?
Yes, belt tension adjustment is a standard maintenance task. Loosen the alternator mounting bolts, adjust the alternator position to achieve proper tension (10–15mm deflection), and re-tighten the bolts. Always refer to your engine's service manual for specific torque settings.

What's the difference between this aftermarket belt and the OEM belt?
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.

How fast do you ship and how much does it cost?
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.

What is your warranty and return policy?
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: 4820607873

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