Crankshaft Assembly – Fits Yamaha 9.9HP/13.5HP/15HP 2-Stroke Outboard Engines
Crankshaft Assembly – Fits Yamaha 9.9HP/13.5HP/15HP 2-Stroke Outboard Engines is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
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
Product Details
This aftermarket Crankshaft Assembly is designed as a direct factory replacement for Yamaha 9.9HP, 13.5HP, and 15HP 2-stroke outboard engines manufactured between 1984 and 1996. It ensures reliable performance for models including F, FM, FEM, MHV, FMH, MSH, FW, and MHH series.
It serves as a direct interchange for Yamaha OEM part numbers 63V-11400-01-00 (complete assembly) and 63V-11432-00-00 (Crank 3 component), as well as the Parsun T15-04020104 equivalent.
- Installation: Designed for a direct fit, replacing the original factory part.
- Material: Constructed from durable steel with a polished surface treatment for longevity.
- Engine Type: Compatible with 2-stroke gasoline outboard engines.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 63V-11400-01-00 | Complete Assembly |
| Yamaha | 63V-11432-00-00 | Crank 3 Component |
| Parsun | T15-04020104 | Aftermarket equivalent |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha owners, this part fits a wide range of 9.9HP, 13.5HP, and 15HP 2-stroke models from the mid-1980s to mid-1990s.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Yamaha | 9.9F | 9.9 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 9.9FM | 9.9 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 9.9FEM | 9.9 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 9.9MHV | 9.9 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 9.9FMH | 9.9 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 9.9MSH | 9.9 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 13.5AMH | 13.5 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 15F | 15 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 15FEM | 15 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 15FM | 15 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 15MH | 15 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 15MSH | 15 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 15FW | 15 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Yamaha | 15MHH | 15 | 2-Stroke | 1984–1996 | 63V-11432-00-00 |
| Parsun | T15 | 15 | 2-Stroke | T15-04020104 |
Technical Specs
- Product Type
- Crankshaft Assembly / Crank 3 Component
- Installation
- OEM Factory Replacement
- Fuel Type
- Gasoline
- Housing Material
- Steel
- Surface Treatment
- Polished
- Weight
- ~25 lbs (11.3 kg) for complete assembly
- Product Dimensions
- 8.5" L x 10.0" W x 4.0" H
- Box Dimensions
- 8.5" L x 10.0" W x 4.0" H
- Warranty
- 1 Year
What’s in the Box
Your package contents will vary depending on your selection:
If purchasing the complete crankshaft assembly (replaces 63V-11400-01-00):
- 1 x Complete Crankshaft Assembly, which includes:
- 1 x Crank 1 (63V-11412-00-00)
- 1 x Crank 2 (63V-11422-00-00)
- 1 x Crank 3 (63V-11432-00-00)
- 1 x Crank 4 (63V-11442-00-00)
If purchasing the Crank 3 component only (replaces 63V-11432-00-00):
- 1 x Crank 3 Component (63V-11432-00-00)
Installation Notes
- Disconnect the battery and ensure the engine is off and cool.
- Remove the engine cover and flywheel to access internal components.
- Carefully disassemble the powerhead, labeling all parts and connections for reassembly.
- Remove the old crankshaft assembly, taking note of bearing and seal positions.
- Clean all mating surfaces of old gasket material and grime.
- Install the new crankshaft assembly, ensuring all bearings and seals are correctly seated.
- Reassemble the powerhead according to the manufacturer's service manual, using new gaskets.
- Torque all bolts to the specified values in the correct sequence.
- Reinstall the flywheel and all other external components.
- Reconnect the battery, start the engine, and check for proper operation and any leaks.
Troubleshooting & FAQ
How do I know if my crankshaft is failing?
Common signs of a bad crankshaft include excessive engine vibration, knocking or rumbling sounds from the lower engine block, or a complete engine seizure. Visible damage or cracks on the old crankshaft during an inspection also indicate a need for replacement.
Is this the complete assembly or just one part?
This listing may be for the complete crankshaft assembly (63V-11400-01-00) or for the individual 'Crank 3' component (63V-11432-00-00). Please check the "What's in the Box" section and your order selection to confirm what is included.
Will this fit a 4-stroke Yamaha engine?
No, this crankshaft is specifically designed for 2-stroke Yamaha outboard engines. It is not compatible with any 4-stroke models.
Do I need special tools for this installation?
Yes, replacing a crankshaft is a complex job that requires specialized tools such as a flywheel puller, torque wrench, and potentially a press for bearings. Access to a full service manual for your specific engine model is essential. Professional installation is highly recommended.
What is the difference between the complete assembly and the Crank 3 component?
The complete assembly (63V-11400-01-00) includes all four 'Crank' components that make up the entire crankshaft. The Crank 3 component (63V-11432-00-00) is just one of those four pieces. You should only purchase the individual component if you have specifically diagnosed a failure in that part alone.
What is the recommended maintenance for a new crankshaft?
After installation, follow your engine's standard break-in procedure. Ensure you use the correct 2-stroke oil-to-fuel ratio at all times. Regular maintenance, including checking for fuel and air leaks, will ensure a long service life.
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
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
