Reverse Roller Bearing – Fits Yamaha 150-225 HP Counter-Rotation Outboards (Replaces 93390-000U2-00)
Reverse Roller Bearing – Fits Yamaha 150-225 HP Counter-Rotation Outboards (Replaces 93390-000U2-00) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Reverse Roller Bearing – Fits Yamaha 150-225 HP Counter-Rotation Ou...
Product Details
This is an aftermarket Reverse Roller Bearing – Fits Yamaha 150-225 HP Counter-Rotation Outboards (Replaces 93390-000U2-00). It is designed for 2.6 liter Yamaha counter-rotation outboard models from 1992 to the current year, specifically for 150, 175, 200, and 225 HP engines.
It serves as a direct replacement for Yamaha OEM part 93390-000U2-00 and ITACO 93390-000U2.
- Installs in the lower unit gearcase.
- Engineered for use with standard marine grease.
- Package includes one cylindrical roller bearing.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 93390-000U2-00 |
| ITACO | 93390-000U2 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Designed for the following Yamaha counter-rotation models:
| Brand | Model | Rated HP | Years | OEM Part No. |
|---|---|---|---|---|
| Yamaha | 150 HP Counter-Rotation | 150 | 1992–current | 93390-000U2-00 |
| Yamaha | 175 HP Counter-Rotation | 175 | 1992–current | 93390-000U2-00 |
| Yamaha | 200 HP Counter-Rotation | 200 | 1992–current | 93390-000U2-00 |
| Yamaha | 225 HP Counter-Rotation | 225 | 1992–current | 93390-000U2-00 |
Technical Specs
- Product Type
- Reverse Roller Bearing
- Installation
- Lower Unit / Gearcase
- Dimensions
- 9.0" L x 9.0" W x 5.0" H
- Weight
- 1 lb (0.45 kg)
- Bearing Type
- Roller Bearing
- Compatible Lubricant
- Grease
- Other Technical Attributes
- For 2.6 liter counter rotation applications
What’s in the Box
- 1 x Bearing, Cyl. #90 (Replaces 93390-000U2-00)
Installation Notes
- Drain the gearcase lubricant completely into a suitable container.
- Remove the propeller and detach the lower unit from the outboard engine.
- Disassemble the gearcase to access the reverse gear and bearing assembly. Note the orientation of all components.
- Carefully press out the old reverse roller bearing from its housing using an appropriate bearing puller or press.
- Clean the bearing seat and surrounding area of any debris or old grease.
- Align the new roller bearing and press it squarely into place until it is fully seated. Do not use a hammer directly on the bearing.
- Apply a liberal amount of fresh marine grease to the new bearing.
- Reassemble the gearcase components, ensuring all gears, shims, and seals are correctly positioned.
- Reattach the lower unit to the engine, torquing bolts to manufacturer specifications.
- Refill the gearcase with the recommended lubricant to the proper level.
- Reinstall the propeller. Check for smooth operation before returning to the water.
Troubleshooting & FAQ
How do I know if this bearing fits my specific Yamaha model?
This bearing is designed for Yamaha 150, 175, 200, and 225 HP counter-rotation models manufactured from 1992 to the present. The key is that your outboard must be a "counter-rotation" model with a 2.6L powerhead. Always verify the OEM part number 93390-000U2-00 matches what is specified for your engine.
What are the signs of a failing reverse roller bearing?
Common symptoms include a grinding or rumbling noise from the lower unit, especially when in reverse gear, excessive metal shavings on the gearcase drain plug magnet, or difficulty shifting. In severe cases, it can lead to gear failure.
Is this for a 2-stroke or 4-stroke engine?
This part fits 2.6L V6 engine blocks used from 1992 to current, a range that includes both 2-stroke and some 4-stroke models. The critical factor is the counter-rotation gearcase design, not the stroke type. Confirm compatibility with your specific engine's part list.
Can I install this bearing myself?
While DIY installation is possible for experienced mechanics with the proper tools (like a bearing press and puller), we strongly recommend professional installation. Incorrect installation can lead to catastrophic gearcase failure.
What is the recommended replacement interval?
There is no fixed replacement interval. This bearing should be inspected for signs of wear, such as pitting or roughness, whenever the lower unit is serviced or resealed. Replace it if any damage is found or as a preventive measure during a major gearcase rebuild.
What is the difference between OEM and this aftermarket part?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. It is manufactured in an ISO 9002 facility and batch-inspected for consistency and quality, offering a reliable alternative to the original part.
What are your shipping speed & cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options will appear at checkout where available for your location.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, contact our support team with your order details. Returns are accepted within our standard window, provided the item is unused and in its original condition. Please see our policy page or reach out for 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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