Bearing – Fits Yamaha 150HP-250HP Outboard Motors (Replaces 93306-209U0-00)
Bearing – Fits Yamaha 150HP-250HP Outboard Motors (Replaces 93306-209U0-00) 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
Bearing – Fits Yamaha 150HP-250HP Outboard Motors (Replaces 93306-2...
Product Details
This genuine-quality Bearing – Fits Yamaha 150HP-250HP Outboard Motors (Replaces 93306-209U0-00) is designed for the lower unit/gearcase assembly in a wide range of Yamaha outboards. It is a critical drive system component for many 150HP to 250HP 2-stroke and 4-stroke models manufactured from 1984 to the present, including F-series and V6 engines.
This part offers a direct replacement for Yamaha part numbers 93306-209U0-00 and 93306-209U0, as well as EMP part 31-31502.
- Installation Location: Mounts inside the lower unit/gearcase assembly.
- Durable Construction: Features a robust steel housing for long-lasting performance in marine environments.
- Core Function: Serves as an essential component within the lower casing and drive system.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 93306-209U0-00 | Primary OEM Reference |
| Yamaha | 93306-209U0 | Alternate OEM Reference |
| EMP | 31-31502 | Aftermarket Interchange |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha models, this bearing fits a variety of V6 and F-series engines. Verify your specific model and year, as coverage is extensive from 1984 onwards.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 150F | 150 | 2-Stroke | 1984+ | 93306-209U0-00 | Lower Unit/Gearcase Application |
| Yamaha | 200F | 200 | 2-Stroke | 1984+ | 93306-209U0-00 | Lower Unit/Gearcase Application |
| Yamaha | 225F | 225 | 2-Stroke | 1984+ | 93306-209U0-00 | Lower Unit/Gearcase Application |
| Yamaha | 250F | 250 | 2-Stroke | 1984+ | 93306-209U0-00 | Lower Unit/Gearcase Application |
| Yamaha | F150-F175 | 150-175 | 4-Stroke | Various | 93306-209U0-00 | Lower Unit/Gearcase Application |
| Yamaha | F200-F225-F250 V6 | 200-250 | 4-Stroke | Various | 93306-209U0-00 | Lower Unit/Gearcase Application |
| Yamaha | V6 SPECIAL (V6SPECIALLN, V6SPECIALXN) | 2-Stroke | 1984 | 93306-209U0-00 | Lower Unit/Gearcase Application |
Technical Specs
- Product Type
- Bearing
- Installation
- Lower Unit/Gearcase
- Housing Material
- Steel
- Product Dimensions
- 4.0" H x 9.0" W x 9.0" L
- Box Dimensions
- 4.0" H x 9.0" W x 9.0" L
- Other Technical Attributes
- Part of Lower Casing & Drive Assembly
What’s in the Box
- 1 x Bearing (93306-209U0-00)
Installation Notes
- Drain the gearcase oil completely into a suitable container.
- Remove the propeller assembly from the propeller shaft.
- Unbolt and carefully lower the entire gearcase (lower unit) from the outboard's midsection.
- Disassemble the lower unit’s internal components as required to access the driveshaft and bearing carrier.
- Use a bearing puller or press to carefully remove the old bearing from its housing.
- Clean the housing thoroughly to remove any old lubricant, debris, or metal shavings.
- Press the new bearing evenly into the housing until it is fully seated. Ensure it is oriented correctly.
- Reassemble the driveshaft, gears, and all other components in reverse order of disassembly.
- Install a new water pump impeller and gaskets during reassembly.
- Reinstall the gearcase to the midsection, ensuring the driveshaft and shift shaft align correctly.
- Torque all bolts to the manufacturer's specified values.
- Refill the gearcase with the recommended marine gear lubricant to the proper level.
Troubleshooting & FAQ
How do I know if this bearing fits my motor?
The best way is to match your existing part number to 93306-209U0-00 or one of the listed cross-references. You can also use the compatibility table to find your engine model and year. Always visually compare the new part to your old one before installation.
What are the signs of a failing gearcase bearing?
Common symptoms include a grinding or whining noise from the lower unit (especially when in gear), excessive vibration, or finding metal shavings in the gear oil during a fluid change. If you notice any of these, inspect the internal components immediately.
When should this bearing be replaced?
This bearing does not have a fixed replacement interval. It should be inspected whenever the lower unit is serviced for other reasons (like a water pump replacement) and replaced if there are any signs of wear, corrosion, or roughness when turned.
Is any special tool required for installation?
Yes, replacing a lower unit bearing typically requires specialized tools, including a bearing press or puller, to remove the old bearing and install the new one without damaging the housing or the new part. Professional installation is highly recommended.
Can I hear a bad bearing while the engine is running on muffs?
It's possible, but it may be difficult to hear over the engine noise. The sound is often more noticeable when the boat is in the water and under load (in gear). Checking the gear oil for metal shavings is a more reliable diagnostic method.
What is the difference between an OEM and an aftermarket part?
This listing is an aftermarket replacement, not an original equipment manufacturer (OEM) part. It has been engineered to meet or exceed OEM specifications using comparable materials and is manufactured in an ISO 9002 certified facility. Every batch is inspected to ensure quality and consistency.
How fast is shipping and what does it cost?
We ship worldwide quickly, with typical transit times of 5–15 days for most regions. Standard shipping is free on all orders. Expedited shipping options, if available for your location, will be presented at checkout.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard return window for items that are unused and in their original packaging. Refer to our policy page or contact us for specific instructions.
Safety & Important Info
- Verify images and specifications against 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 quality control.
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