Tapered Roller Bearing, Outer Forward Gear – Fits Yamaha 200-300HP Outboards
Tapered Roller Bearing, Outer Forward Gear – Fits Yamaha 200-300HP Outboards is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Tapered Roller Bearing, Outer Forward Gear – Fits Yamaha 200-300HP ...
Product Details
This is a replacement Tapered Roller Bearing, Outer Forward Gear – Fits Yamaha 200-300HP Outboards (Replaces 93332-000W1-00), designed for the lower unit. It fits a wide range of Yamaha V6 outboards, including 2-stroke models from 200HP to 300HP (1990–2009) and 4-stroke models from 200HP to 250HP (2002–2019).
This part is a direct interchange for OEM part number 93332-000W1-00 and aftermarket references like SEI Marine 93-421-15 and Sterndrive Engineering 93-421-15.
- Installs in the forward gear position within the lower unit.
- Engineered to support both radial and axial loads for optimal gear alignment.
- Requires a press fit for secure installation into the gearcase housing.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 93332-000W1-00 |
| SEI Marine | 93-421-15 |
| Sterndrive Engineering | 93-421-15 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This bearing is designed for a wide range of Yamaha V6 outboards, covering both two-stroke and four-stroke models from 200HP to 300HP produced over several decades.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | Various | 200 | 2-Stroke | 1998–2009 | 93332-000W1-00 | |
| Yamaha | Various | 225 | 2-Stroke | 1994–2009 | 93332-000W1-00 | |
| Yamaha | Various | 250 | 2-Stroke | 1990–2009 | 93332-000W1-00 | |
| Yamaha | Various | 300 | 2-Stroke | 2004–2009 | 93332-000W1-00 | |
| Yamaha | Various | 200 | 4-Stroke | 2002–2019 | 93332-000W1-00 | |
| Yamaha | Various | 225 | 4-Stroke | 2005–2018 | 93332-000W1-00 | |
| Yamaha | Various | 250 | 4-Stroke | 2005–2018 | 93332-000W1-00 |
Technical Specs
- Product Type
- Tapered Roller Bearing
- Installation
- Forward Gear / Lower Unit
- Housing Material
- Steel
- Dimensions
- #32 Size
- Product Dimension
- 6.5" H x 6.5" W x 10.0" L
- Fitting Type
- Press Fit
- Other Technical Attributes
- Supports both radial and axial loads
What’s in the Box
- 1 x Tapered Roller Bearing (93332-000W1-00)
Installation Notes
- Disconnect the battery and secure the engine to prevent accidental starting.
- Drain the gearcase oil completely into a suitable container.
- Remove the lower unit (gearcase) from the outboard's midsection.
- Carefully disassemble the gearcase to access the forward gear and bearing assembly, noting the order and orientation of all parts.
- Using a hydraulic press and appropriate bearing pullers, remove the old bearing from its housing.
- Thoroughly clean and inspect the bearing housing for signs of wear or damage.
- Press the new bearing firmly and evenly into place until it is fully seated.
- Reassemble the gearcase components, following the manufacturer's service manual for shimming procedures to set correct gear backlash.
- Reinstall the lower unit onto the outboard, ensuring all connections are secure.
- Refill the gearcase with the specified marine gear lubricant to the correct level.
Troubleshooting & FAQ
What are signs my forward gear bearing is failing?
Common indicators include a grinding, whining, or rumbling noise from the lower unit, especially when in gear. You may also notice excessive vibration during operation or find metallic shavings in the gear oil during a change.
Does this part require shimming upon installation?
Yes, absolutely. Proper shimming is critical for correct gear backlash and alignment in the lower unit. Always follow the OEM service manual's procedure for measuring and setting the correct shim thickness when replacing this bearing to prevent premature wear or catastrophic failure.
What is the primary cause of failure for this bearing?
The most common causes of failure are water intrusion into the gearcase, which contaminates the oil and leads to corrosion, and improper gear backlash/preload from incorrect shimming. Using low-quality or incorrect gear lubricant can also accelerate wear.
How often should this bearing be inspected or replaced?
There is no fixed replacement interval. This bearing should be inspected whenever the lower unit is disassembled for other service (e.g., water pump replacement, resealing) and replaced if you find any signs of pitting, scoring, corrosion, or rough operation.
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.
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