Timing Belt – Fits Yamaha F15 & F20 4-Stroke (Replaces 6AH-46241-00-00, 18-15136)
Timing Belt – Fits Yamaha F15 & F20 4-Stroke (Replaces 6AH-46241-00-00, 18-15136) is backordered and will ship as soon as it is back in stock.
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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.
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Timing Belt – Fits Yamaha F15 & F20 4-Stroke (Replaces 6AH-4624...
Timing Belt – Fits Yamaha F15 & F20 4-Stroke (Replaces 6AH-46241-00-00, 18-15136) is backordered and will ship as soon as it is back in stock.
Product Details
This high-quality aftermarket Timing Belt – Fits Yamaha F15 & F20 4-Stroke Outboard Engines (Replaces 6AH-46241-00-00) is engineered for Yamaha 15–20 HP 4-Stroke outboards (2006–2018) and WAHOO 15–20 HP 4-Stroke outboards (2007 and newer).
It serves as a direct interchange for Yamaha 6AH-46241-00-00, 6AH-46241-01-00, 6AH-46241-02-00, Sierra 18-15136, and WAHOO F20-05000003.
- Installation: Installs within the engine timing system
- Material: Durable rubber and composite housing
- Compatibility: Designed for gasoline-fueled 4-stroke engines
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 6AH-46241-00-00 |
| Yamaha | 6AH-46241-01-00 |
| Yamaha | 6AH-46241-02-00 |
| Sierra | 18-15136 |
| WAHOO | F20-05000003 |
Engine & Model Compatibility
Confirm your engine model and year in the table below.
Fits select Yamaha F15, F20, and other variant models manufactured between 2006 and 2018.
Compatible with WAHOO 15 and 20 HP 4-stroke models from 2007 and newer.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Yamaha | F15C | 15 | 4-Stroke | 2006–2017 | 6AH-46241-00-00 |
| Yamaha | F20 | 20 | 4-Stroke | 2006–2017 | 6AH-46241-00-00 |
| Yamaha | F20SMHA | 20 | 4-Stroke | 2012–2018 | 6AH-46241-00-00 |
| Yamaha | F20 LEA, SEA, LPA | 20 | 4-Stroke | 2006–2017 | 6AH-46241-00-00 |
| Yamaha | F20 LEHA, SEHA, LMHA, SMHA, LPHA | 20 | 4-Stroke | 2006–2017 | 6AH-46241-00-00 |
| WAHOO | 15 | 15 | 4-Stroke | 2007+ | F20-05000003 |
| WAHOO | 20 | 20 | 4-Stroke | 2007+ | F20-05000003 |
Technical Specs
- Product Type
- Timing Belt
- Installation
- Engine Timing System
- Fuel Type
- Gasoline
- Housing Material
- Rubber/Composite
- Housing Color
- Black
- Warranty
- 90 days (aftermarket); 1 year (HeuroFosh brand)
What’s in the Box
- 1 x Timing Belt (Replaces 6AH-46241-00-00)
Installation Notes
- Disconnect the battery and ensure the engine is off and cool.
- Remove the flywheel cover and any other components obstructing access to the timing belt.
- Carefully align the timing marks on both the crankshaft and camshaft sprockets according to your service manual.
- Loosen the belt tensioner pulley and slide the old timing belt off the sprockets.
- Install the new belt, starting with the crankshaft sprocket and working your way around, ensuring the timing marks do not move.
- Apply the correct tension to the belt by adjusting the tensioner, then tighten the tensioner bolt to specified torque.
- Rotate the engine manually several times to confirm the timing marks remain aligned and the belt tracks correctly.
- Reinstall all removed components in reverse order. Professional installation is highly recommended.
Troubleshooting & FAQ
How do I know if this timing belt will fit my engine?
This belt is designed for the specific Yamaha and WAHOO models listed in the "Engine & Model Compatibility" section. The best way to ensure a correct fit is to match your engine's model and year to the table and verify that it uses one of the part numbers listed in the "Part Number Matrix," such as 6AH-46241-00-00.
What are the signs of a worn or failing timing belt?
Common symptoms include a ticking or rattling noise from the engine compartment, rough idling, engine misfires, oil leaks near the front of the motor, or the engine refusing to start. A visual inspection may reveal cracks, fraying, glazing, or missing teeth on the belt itself.
How often should I replace my outboard motor's timing belt?
Replacement intervals are set by the engine manufacturer and are typically based on operating hours or years of service (e.g., every 1000 hours or 5 years). Always consult your engine's official service manual for the recommended schedule. It is critical to replace it as a preventative maintenance item to avoid catastrophic engine failure.
Is there a difference in performance between this and an OEM belt?
Our aftermarket belts are manufactured to meet or exceed OEM specifications for material, fit, and durability. They are designed to provide the same performance and reliability as the original factory part under normal operating conditions.
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.
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