Timing Belt – Fits Yamaha 25HP-70HP 4-Stroke Outboards (Replaces 6C5-46241-00)

Timing Belt – Fits Yamaha 25HP-70HP 4-Stroke Outboards (Replaces 6C5-46241-00)

This high-quality aftermarket timing belt is designed to fit Yamaha 4-stroke outboard engines from 25 HP to 70 HP (model years 2005–2017). It is compatible with a wide range of models, including F25, T25, F30, F40, F50, T50, F60, T60, F70, and MURENA EFI 40XSR/70.

This belt is a direct replacement for Yamaha OEM part number 6C5-46241-00 and Sierra Marine part 18-15130, ensuring a precise fit and reliable performance.

• Number of Teeth: 94
• Installation Type: Serpentine
• Construction: Made from a durable synthetic rubber compound without internal wire reinforcement, matching OEM design for these models.

Part Number Cross-Reference

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

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 1 x Timing Belt (6C5-46241-00)

Installation Guide

1. Ensure the engine is off and completely cooled. Safety first.
2. Disconnect the battery to prevent any accidental starting.
3. Loosen the necessary bolts. This includes the alternator pivot bolt and any tensioner bolts.
4. Identify the belt routing. Note the path around all pulleys before removal.
5. Remove the old belt by relieving tension and slipping it off the pulleys.
6. Inspect and clean all pulley grooves. Ensure they are free of wear, rust, or debris.
7. Route the new belt following the original path, ensuring it seats properly in all grooves.
8. Tension the new belt. A correctly tensioned belt should deflect about 1 cm (½″) under moderate thumb pressure on its longest span.
9. Tighten all bolts to the manufacturer's recommended torque specifications.
10. Reconnect the battery.
11. Start the engine and observe the belt to ensure it tracks smoothly and is centered in the pulley grooves.
12. Re-check tension after a short run. New belts may stretch slightly, so re-tension if necessary.

Troubleshooting & FAQ

How do I confirm this belt fits my Yamaha F60 engine?

To ensure compatibility, please check your engine's model and year against the list in the "Compatible Engine Models" section above. For Yamaha owners, you can use the official Yamaha Serial Number Guide to verify your exact details before purchasing.

How often should I replace my timing belt?

Replacement intervals vary by engine manufacturer and usage hours. We strongly recommend consulting your engine's service manual for the official schedule. You should also visually inspect your belt regularly for signs of wear such as cracking, fraying, glazing, or missing teeth, and replace it immediately if any damage is found.

Does this belt have internal wire reinforcement?

No, this particular timing belt is constructed from a durable synthetic rubber compound and does not feature internal wire reinforcement. This design matches the original OEM part specifications for the compatible Yamaha models listed.

OEM vs. Aftermarket?

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.