Crank Shaft Assembly – Fits Yamaha 9.9HP, 15HP Outboard Motors (Replaces 682-11442-00, 682-11442-03)
Crank Shaft Assembly – Fits Yamaha 9.9HP, 15HP Outboard Motors (Replaces 682-11442-00, 682-11442-03) is backordered and will ship as soon as it is back in stock.
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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 is a direct replacement Crank Shaft Assembly designed for Yamaha 9.9HP and 15HP, 2-Stroke outboard motors, specifically fitting the 1985 model year 9.9D and 15D series engines. It is engineered to meet or exceed original factory specifications, ensuring reliable performance and durability for engine rebuilds or repairs.
It serves as a direct interchange for Yamaha OEM part numbers 682-11442-00 and 682-11442-03-00, as well as aftermarket references like SARUEIR Crank 4 and YAMABOYA 682-11442-00.
- Installation requires internal engine access.
- Designed for gasoline-powered 2-stroke outboards.
- Package includes one complete crankshaft assembly.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By | Notes |
|---|---|---|---|
| Yamaha | 682-11442-00 | 682-11442-03-00 | Original Part Number |
| Yamaha | 682-11442-03-00 | Current OEM Part | |
| SARUEIR | Crank 4 | Aftermarket Cross-Reference | |
| YAMABOYA | 682-11442-00 | Aftermarket Cross-Reference |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This component is a confirmed fit for the specific Yamaha 9.9HP and 15HP two-stroke outboards listed.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 9.9D MHS/L | 9.9 | 2-Stroke | 1985 | 682-11442-00/682-11442-03-00 | Superseded by 682-11442-03-00 |
| Yamaha | 15D WHS/L | 15 | 2-Stroke | 1985 | 682-11442-00/682-11442-03-00 | Superseded by 682-11442-03-00 |
Technical Specs
- Product Type
- Crankshaft Assembly
- Installation
- Engine Internal Component
- Fuel Type
- Gasoline
- Dimensions
- 12.0" L x 10.0" W x 6.6" H
- Warranty
- OEM: Manufacturer warranty; Aftermarket: Varies by manufacturer
- Other Technical Attributes
- Factory original/OEM replacement part for Yamaha 9.9D and 15D outboard models
What’s in the Box
- 1 x Crank Shaft (Replaces 682-11442-00/682-11442-03-00)
Installation Notes
- Disconnect the battery and all fuel lines before beginning work.
- Drain the engine oil and coolant completely.
- Carefully remove the powerhead from the midsection.
- Disassemble the engine block to access the crankcase halves.
- Remove the old crankshaft, taking note of the location of all bearings, seals, and connecting rods.
- Thoroughly clean the crankcase interior and all mating surfaces.
- Lubricate the new crankshaft journals and bearings with marine-grade assembly lube.
- Install the new crankshaft, ensuring correct orientation and seating.
- Reassemble the crankcase halves, torquing all bolts to the manufacturer's specified sequence and values.
- Reinstall the powerhead, flywheel, and all other components in the reverse order of removal.
- Refill with fresh engine oil and coolant as required.
- Always consult your specific outboard service manual for detailed diagrams, torque specifications, and safety procedures.
Troubleshooting & FAQ
How do I know if this crankshaft fits my Yamaha outboard?
This part is specifically for the 1985 Yamaha 9.9D and 15D series 2-stroke models. It is critical to verify your engine's model and year before ordering. Check the identification plate on your engine's mounting bracket.
What are the signs of a failing crankshaft?
Common symptoms include a heavy, rhythmic knocking sound from inside the engine, excessive vibration that increases with RPM, or a sudden engine seizure where the motor locks up and will not turn over.
Is this a direct replacement for the original part?
Yes, this is an aftermarket part designed to be a direct replacement for Yamaha OEM part number 682-11442-00 and its successor, 682-11442-03-00. No modifications should be necessary for a compatible engine.
Does this assembly include bearings and seals?
This listing is for the crankshaft only, as shown in the product images. Main bearings, connecting rod bearings, and oil seals are not included and must be sourced separately.
Why was the original part number superseded?
Manufacturers often update part numbers due to minor design improvements, changes in material composition, or a switch in suppliers. The newer part number (682-11442-03-00) is the current OEM-endorsed replacement and is fully backwards compatible.
Is any special machining or balancing required?
This aftermarket crankshaft is pre-balanced to match OEM specifications. No additional machining or balancing should be required, assuming the connecting rods and pistons being used are also within spec.
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
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