Deep Groove Ball Bearing – Fits Yamaha 25–90HP Outboards (Replaces 93306-207U0-00)
Deep Groove Ball Bearing – Fits Yamaha 25–90HP Outboards (Replaces 93306-207U0-00) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
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
Deep Groove Ball Bearing – Fits Yamaha 25–90HP Outboards (Replaces ...
Product Details
This high-performance Deep Groove Ball Bearing – Fits Yamaha 25–90HP Outboards (Replaces 93306-207U0-00) is designed for the lower unit reverse gear on a wide range of Yamaha 2-stroke and 4-stroke engines from 1984 through 2006 and beyond. Engineered for high radial and axial load tolerance, it ensures smooth gear operation in demanding marine environments.
It serves as a direct replacement for OEM part number 93306-207U0-00 and interchanges with Red Rhino B6207 and superseded Yamaha numbers 93306-207U0 and 93306-207U2.
- Installs in the lower unit to support the reverse gear.
- Open design for direct lubrication from gear oil.
- Constructed with stainless steel balls for superior corrosion resistance.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 93306-207U0-00 | Primary OEM reference |
| Yamaha | 93306-207U0 / 93306-207U2 | Superseded by 93306-207U0-00 |
| Red Rhino | B6207 | Aftermarket cross-reference |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This bearing fits a wide variety of Yamaha outboards, including the 70-90HP 2-stroke series (1984+), C, CV, E, P, and B series models (25-90HP), and various F-series four-strokes (50-100HP). The list below is a representative sample.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 70ETLN | 70 | 2-Stroke | 1984 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 90ETLN | 90 | 2-Stroke | 1984 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 90ETXN | 90 | 2-Stroke | 1984 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 70ETLK | 70 | 2-Stroke | 1985 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 90ETLK | 90 | 2-Stroke | 1985 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 70ETLJ | 70 | 2-Stroke | 1986 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 90ETLJ | 90 | 2-Stroke | 1986 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 90ETLJ-JD | 90 | 2-Stroke | 1986 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 70ETLH | 70 | 2-Stroke | 1987 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 90ETLH | 90 | 2-Stroke | 1987 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 90ETLH-JD | 90 | 2-Stroke | 1987 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 70ETLG | 70 | 2-Stroke | 1988 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 90ETLG | 90 | 2-Stroke | 1988 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | 90ETLG-JD | 90 | 2-Stroke | 1988 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | C85TLRP | 85 | 2-Stroke | 1991 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | P60TLHP | 60 | 2-Stroke | 1991 | 93306-207U0-00 | LOWER DRIVE 1 |
| Yamaha | C75TLRS | 75 | 2-Stroke | 1994 | 93306-207U0-00 | LOWER CASING DRIVE 1 |
| Yamaha | C85TLRS | 85 | 2-Stroke | 1994 | 93306-207U0-00 | LOWER CASING DRIVE 1 |
| Yamaha | P60TLHS | 60 | 2-Stroke | 1994 | 93306-207U0-00 | LOWER CASING DRIVE 1 |
| Yamaha | E60MLHT | 60 | 2-Stroke | 1995 | 93306-207U0-00 | LOWER CASING DRIVE 1 |
| Yamaha | E75MLHT | 75 | 2-Stroke | 1995 | 93306-207U0-00 | LOWER CASING DRIVE 1 |
| Yamaha | F50TLHU | 50 | 4-Stroke | 1996 | 93306-207U0-00 | LOWER CASING DRIVE 1 (T50) |
| Yamaha | F50TLRU | 50 | 4-Stroke | 1996 | 93306-207U0-00 | LOWER CASING DRIVE 1 (T50) |
| Yamaha | T50TLRU | 50 | 2-Stroke | 1996 | 93306-207U0-00 | LOWER CASING DRIVE 1 |
| Yamaha | 2006+ Models | 50-90 | 4-Stroke | 2006+ | 93306-207U0-00 | F70, F75, F90, T50, T60 various models |
*Note: This is a partial list. The bearing fits over 150 different Yamaha outboard models across 70ETLN to 90TLR series, C/CV/E/P/B series (25-90HP), and F-series four-strokes (50-100HP) from 1984 through at least 2006.
Technical Specs
- Product Type
- Deep Groove Ball Bearing
- Installation
- Lower Unit / Reverse Gear
- Housing Material
- Chrome Steel / GCr15
- Dimensions
- 35mm x 72mm x 17mm (Inner x Outer x Width)
- Precision Rating
- P6
- Lubrication
- Oil
- Sealing Type
- Open
- Load Capacity
- High radial & axial load tolerance
- Corrosion Resistance
- Stainless steel balls for marine environments
- System of Measurement
- Metric
- Other Technical Attributes
- SKF Explorer branded; supports both radial and axial loads
What’s in the Box
- 1 x Bearing (93306-207U0-00)
Installation Notes
- Disconnect the battery and secure the engine.
- Place a drain pan under the lower unit and remove the drain and vent plugs to empty the gear lube.
- Remove the propeller nut and propeller assembly.
- Unbolt and carefully lower the gearcase (lower unit) from the engine's upper casing.
- Disassemble the lower unit to access the reverse gear and bearing assembly. This may require specialized tools.
- Use a bearing press or puller to remove the old bearing from its housing.
- Clean the housing and shaft, inspecting for any wear or damage.
- Carefully press the new bearing into place, ensuring it is properly seated and aligned.
- Reassemble the gearcase components in reverse order, applying waterproof marine grease where needed.
- Install a new lower unit gasket kit and re-attach the gearcase to the engine, torquing bolts to manufacturer specifications.
- Re-install the propeller assembly.
- Refill the lower unit with fresh, high-quality marine gear lube before operating.
Troubleshooting & FAQ
How do I know if my reverse gear bearing is failing?
Common signs of a failing lower unit bearing include a grinding or whining noise when in gear (especially reverse), excessive vibration from the gearcase, or the presence of significant metal shavings on the magnetic drain plug during a gear lube change. Difficulty shifting into or out of reverse can also be a symptom.
Why is this an "open" type bearing?
An open bearing has no seals or shields on its sides. This design is intentional for this application, as it allows the gear lube within the lower unit to freely circulate through the bearing, providing continuous cooling and lubrication.
Does this bearing require any special maintenance?
The bearing itself is lubricated by the lower unit's gear oil. The best maintenance is to follow your engine manufacturer's service schedule for changing the gear lube. Using a high-quality marine-grade gear lube is essential for longevity.
Can I install this myself?
Replacing a lower unit bearing is an intermediate to advanced task that requires specialized tools like a bearing press, pullers, and a torque wrench. If you are not experienced with internal gearbox work, professional installation is highly recommended to prevent damage.
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
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
