Crankshaft Bearing – Fits Yamaha Outboard 85HP-90HP (Replaces 93306-206U5-00)
Crankshaft Bearing – Fits Yamaha Outboard 85HP-90HP (Replaces 93306-206U5-00) is backordered and will ship as soon as it is back in stock.
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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.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Crankshaft Bearing – Fits Yamaha Outboard 85HP-90HP (Replaces 93306...
Product Details
This is an aftermarket Crankshaft Bearing – Fits Yamaha Outboard 85HP-90HP (Replaces 93306-206U5-00), designed for 2-Stroke Yamaha outboard engines. It serves as a crucial internal component for maintaining smooth crankshaft rotation. Please verify compatibility with your specific engine model and year before purchase.
This part is a direct cross-reference for Yamaha part numbers 93306-206U5-00 and 93306-206U5, as well as aftermarket interchanges like Red Rhino YA-B206 and OVERSEE 93306-206U5-00.
- Installation as an internal engine component.
- Engineered with a durable ball bearing design.
- Includes one crankshaft bearing as shown in the package contents.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 93306-206U5-00 |
| Yamaha | 93306-206U5 |
| Red Rhino | YA-B206 |
| OVERSEE | 93306-206U5-00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yamaha | Outboard | 85 | 2-Stroke | 93306-206U5-00 | Lower main bearing |
| Yamaha | Outboard | 90 | 2-Stroke | 93306-206U5-00 | Lower main bearing |
Technical Specs
- Product Type
- Crankshaft Bearing
- Installation
- Internal Engine Component
- Dimensions
- 9.0 x 9.0 x 3.5
- Housing Material
- Metal
- Housing Color
- Silver
- Other Technical Attributes
- Ball bearing design
What’s in the Box
- 1 × Bearing (93306-206U5-00)
Installation Notes
- Disconnect the battery and ensure the engine is completely cool before starting work.
- Drain the engine oil to avoid spills during disassembly.
- Access the crankshaft by removing overlying engine components like the crankcase cover. This process varies significantly between models.
- Carefully extract the old bearing using a designated bearing puller, taking note of its orientation.
- Thoroughly clean the bearing housing and crankshaft surfaces to remove any old lubricant or debris.
- Using an appropriate bearing press or driver tool, gently press the new bearing into place until it is fully and evenly seated. Avoid striking the bearing directly with a hammer.
- Reassemble all engine components in the reverse order of removal, ensuring all connections are secure.
- Refill the engine with the manufacturer-specified oil to the correct level.
- Reconnect the battery and perform a test run to check for proper operation and listen for any unusual noises.
Troubleshooting & FAQ
How do I know if my crankshaft bearing needs replacement?
Common signs of a failing crankshaft bearing include a rumbling, roaring, or grinding noise from the engine that changes with RPMs, excessive engine vibration, or the presence of metallic particles in the engine oil during an oil change.
Will this bearing fit my 4-stroke engine?
No, this bearing is specifically designed for 2-stroke Yamaha Outboard models as listed in the compatibility table. It is not suitable for 4-stroke applications.
What is the difference between upper and lower main bearings?
This part is specified as a lower main bearing. The crankshaft has several main bearings supporting it, and the position (upper, center, lower) is critical. Always use the specific part number called for in your engine's service manual or parts diagram.
Are special tools required for installation?
Yes. Proper installation requires specialized tools such as a bearing puller to remove the old bearing and a bearing press or driver tool to install the new one without causing damage to the bearing or engine case.
Is this an OEM or aftermarket part?
This listing is an aftermarket replacement (not OEM). It is built to meet or exceed OEM-level specifications with comparable materials. Our parts are manufactured in an ISO 9002 certified facility and are batch-inspected for quality and consistency.
What are the shipping speed and cost?
We ship worldwide quickly—typical transit is 5–15 days for most locations. Standard shipping is free, and expedited options will appear at checkout if they are available for your region.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their 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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