Engine Timing Belt – Fits Yamaha F6/F8/T8/F9.9F/T9.9F (Replaces 68T-46241-00-00, 60R-G6241-00-00, 18-15138)
Engine Timing Belt – Fits Yamaha F6/F8/T8/F9.9F/T9.9F (Replaces 68T-46241-00-00, 60R-G6241-00-00, 18-15138) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Engine Timing Belt – Fits Yamaha F6/F8/T8/F9.9F/T9.9F (Replaces 68T...
Engine Timing Belt – Fits Yamaha F6/F8/T8/F9.9F/T9.9F (Replaces 68T-46241-00-00, 60R-G6241-00-00, 18-15138) is backordered and will ship as soon as it is back in stock.
Product Details
This replacement Engine Timing Belt – Fits Yamaha F6/F8/T8/F9.9F/T9.9F 4-Stroke Outboards (Replaces 68T-46241-00-00) is designed for a precise fit on Yamaha 4-Stroke outboard models from 6 to 9.9 HP, including F6/F8/T8 (2001–2008) and F9.9F/T9.9F (2007–2008) series engines. It ensures correct engine timing for reliable performance.
This part is a direct interchange for Yamaha part numbers 68T-46241-00-00, 60R-G6241-00-00, and Sierra 18-15138.
- Installs as a direct OEM-equivalent replacement.
- Constructed from durable, reinforced rubber with internal fibers for longevity.
- Follow manufacturer guidance to replace every 1000 hours or 5 years of operation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 68T-46241-00-00 |
| Yamaha | 60R-G6241-00-00 |
| Sierra | 18-15138 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha Outboards: Ensure your model and year fall within the ranges listed. "Ongoing" dates may have specific cutoffs not published here.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F6 | 6 | 4-Stroke | 2005–2008 | 68T-46241-00-00 | |
| Yamaha | F8 | 8 | 4-Stroke | 2001–2004 | 68T-46241-00-00 | |
| Yamaha | F8 | 8 | 4-Stroke | 2005–ongoing | 68T-46241-00-00 | |
| Yamaha | T8 | 8 | 4-Stroke | 2001–2004 | 68T-46241-00-00 | High thrust model |
| Yamaha | T8 | 8 | 4-Stroke | 2005–ongoing | 68T-46241-00-00 | High thrust model |
| Yamaha | F9.9F | 9.9 | 4-Stroke | 04/2007–ongoing | 68T-46241-00-00 | |
| Yamaha | T9.9F | 9.9 | 4-Stroke | 04/2007–ongoing | 68T-46241-00-00 | High thrust model |
Technical Specs
- Product Type
- Engine Timing Belt
- Installation
- Direct OEM replacement
- Material
- Reinforced rubber with internal fibers
- Color
- Black
- Manufacturer Recommendation
- Replace every 1000 hours or 5 years of operation
What’s in the Box
- 1 x Engine Timing Belt (68T-46241-00-00)
Installation Notes
- Disconnect the battery and secure the engine to prevent accidental starting.
- Remove the engine cover and any components obstructing access to the timing belt, such as the flywheel cover.
- Carefully release the tension from the existing belt, noting the alignment marks on the camshaft and crankshaft pulleys.
- Remove the old belt and inspect the pulleys and tensioner for wear or damage.
- Route the new belt, ensuring it engages correctly with all pulleys and that timing marks are perfectly aligned.
- Apply the correct tension to the new belt according to your engine’s service manual specifications.
- Rotate the engine manually by several full revolutions to confirm alignment and smooth operation.
- Reinstall all removed components, reconnect the battery, and test the engine at idle.
Troubleshooting & FAQ
How do I find my engine model to check for fitment?
Your outboard engine's model and serial number are typically found on a plate affixed to the transom clamp bracket. Use this information to match against the compatibility table.
What are the signs of a failing timing belt?
Common symptoms include ticking or rattling noises from the engine, difficulty starting, rough idling, or a noticeable loss of power. Visual signs like cracks, fraying, or missing teeth on the belt also indicate it's time for replacement.
Can I wait longer than the recommended interval to replace the belt?
It is strongly advised to follow the manufacturer's recommended service interval (1000 hours or 5 years). Postponing replacement risks belt failure, which can cause severe internal engine damage.
Is special equipment needed to install this belt?
Standard mechanic's tools are generally sufficient, but a torque wrench is critical for correctly tightening bolts and setting tension. A flywheel puller may be necessary on some models. Always consult your engine's service manual for specific procedures.
Is this an OEM or aftermarket part?
This is a high-quality aftermarket replacement, not an OEM component. It is engineered to meet or exceed original equipment manufacturer (OEM) specifications for fit, material, and performance and is produced in an ISO 9002 certified facility.
How fast is shipping?
We ship worldwide from our closest warehouse to ensure fast delivery, with typical transit times of 5–15 days. Standard shipping is free for most orders, with expedited options available at checkout.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal marine use. Should an issue arise, please contact our support team with your order details for assistance. Returns are accepted for unused items in their original condition within our standard return window.
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.
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