Ball Bearing 93306-206U4 – Fits Yamaha 48-55 HP 2-Stroke Outboard Motors (Replaces 93306-206U4-00)
Ball Bearing 93306-206U4 – Fits Yamaha 48-55 HP 2-Stroke Outboard Motors (Replaces 93306-206U4-00) 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
Free standard shipping on all orders under 1 KG
Ball Bearing 93306-206U4 – Fits Yamaha 48-55 HP 2-Stroke Outboard M...
Product Details
This is a high-precision replacement Ball Bearing 93306-206U4, designed as a crucial crankshaft component for various Yamaha 2-Stroke outboard motors. It fits 48 HP and 55 HP models (including the 697 series) and specific 40 HP engines like the E40G, E40J, and 40XMH 66T series.
It serves as a direct interchange for Yamaha part numbers 93306-206U4-00 and 93306-206U3.
- Installation: Mounts internally as a core engine component.
- Material: Constructed from high-durability Chrome Steel (GCr15) for longevity.
- Precision: Manufactured to ABEC3 standards for high-speed performance.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 93306-206U4-00 |
| Yamaha | 93306-206U3 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha owners, please verify your specific engine model and series to ensure this bearing is the correct fit for your crankshaft assembly.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yamaha | E40G (6F6/6J4) | 40 | 2-Stroke | 93306-206U4-00 | |
| Yamaha | E40J (6F6/6J4) | 40 | 2-Stroke | 93306-206U4-00 | |
| Yamaha | E40XMH (66T) | 40 | 2-Stroke | 93306-206U4-00 | |
| Yamaha | 697 Series | 48 | 2-Stroke | 93306-206U4-00 | |
| Yamaha | 697 Series | 55 | 2-Stroke | 93306-206U4-00 |
Technical Specs
- Product Type
- Ball Bearing (Crankshaft)
- Installation
- Internal Engine Component
- Fuel Type
- Gasoline
- Housing Material
- Chrome Steel (GCr15)
- Dimensions
- 30mm ID × 66mm OD × 16mm Width
- Weight
- 0.4 kg (0.88 lb)
- Warranty
- Standard Yamaha OEM warranty
- Other Technical Attributes
- Precision high-speed bearing manufactured to ABEC3 standards
What’s in the Box
- 1 x Ball Bearing (93306-206U4-00)
Installation Notes
- Disconnect the battery leads and ensure the engine is off and cool.
- Drain the engine oil and coolant completely.
- Begin disassembly of the powerhead to gain access to the engine block and crankshaft.
- Following your service manual, carefully remove the old crankshaft bearing using a dedicated bearing puller.
- Thoroughly clean the bearing seat on the crankshaft and in the crankcase, removing any old lubricant or debris.
- Press the new bearing into place evenly using a bearing press or appropriate driver. Do not hammer directly on the bearing.
- Reassemble the engine components in reverse order, torquing all fasteners to the manufacturer's specifications.
- Refill the engine with fresh oil and coolant before starting.
Troubleshooting & FAQ
How do I know if my crankshaft bearing is failing?
Common signs include a grinding or rumbling noise from the engine that changes with RPM, excessive vibration, or visible metal shavings in the engine oil during an oil change.
What is the difference between this and the original OEM bearing?
This aftermarket bearing is engineered to meet or exceed original OEM specifications for fit, material (Chrome Steel GCr15), and performance (ABEC3 precision). It provides a reliable, cost-effective alternative to the factory part.
Is this bearing pre-lubricated?
Yes, the bearing is pre-lubricated for protection and initial startup. However, always adhere to the lubrication procedures outlined in your engine’s official service manual during installation.
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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