Needle Bearing – Fits Yamaha Outboard 150–300HP V6 Models (Replaces 93311-928U5, YA-B344)
Needle Bearing – Fits Yamaha Outboard 150–300HP V6 Models (Replaces 93311-928U5, YA-B344) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Free standard shipping on all orders under 1 KG
Needle Bearing – Fits Yamaha Outboard 150–300HP V6 Models (Replaces...
Product Details
This is a high-quality aftermarket Needle Bearing – Fits Yamaha Outboard 150–300HP V6 Models designed for the lower drive vertical shaft. It is compatible with a wide range of Yamaha 4-Stroke V6 outboard engines from 1984 to 1993, including 2.6L and 3.1L models in the ETLN/ETXN, SPECIALJ/LJ, EXCELL/XL, and TLRP/TXRP series.
This component serves as a direct replacement for Yamaha OEM part numbers 93311-928U5, 93311-928U5-00, YA-B344, and SARUEIR 93311-928U5.
- Installation Location: Lower Drive Unit Vertical Shaft
- Fitting: Press Fit
- Material: High-strength steel for durability
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 93311-928U5 / 93311-928U5-00 |
| Yamaha | YA-B344 |
| SARUEIR | 93311-928U5 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 150ETLN / 150ETXN | 150 | 4-Stroke | 1984 | 93311-928U5 | |
| Yamaha | 150ETLK / 150ETXK | 150 | 4-Stroke | 1985 | 93311-928U5 | |
| Yamaha | 150ETLJ / 150ETXJ / PROV150J / PROV150LJ | 150 | 4-Stroke | 1986 | 93311-928U5 | |
| Yamaha | 150ETXH / 150ETLH / PROV150LH | 150 | 4-Stroke | 1987 | 93311-928U5 | |
| Yamaha | 150ETLG-JD / 150ETLG / PROV150LG / 150ETXG | 150 | 4-Stroke | 1988 | 93311-928U5 | |
| Yamaha | 150ETXF / 150ETLF | 150 | 4-Stroke | 1989 | 93311-928U5 | |
| Yamaha | 150ETXD / 150ETLD / PROV150LD / 150ETLDA | 150 | 4-Stroke | 1990 | 93311-928U5 | |
| Yamaha | 150TXRP / P150TLRP / 150TLRP | 150 | 4-Stroke | 1991 | 93311-928U5 | |
| Yamaha | 150TXRQ / P150TLRQ / 150TLRQ | 150 | 4-Stroke | 1992 | 93311-928U5 | |
| Yamaha | 150TXRR / P150TLRR / 150TLRR | 150 | 4-Stroke | 1993 | 93311-928U5 | |
| Yamaha | 175ETXN / 175ETLN | 175 | 4-Stroke | 1984 | 93311-928U5 | |
| Yamaha | 175ETXK / 175ETLK | 175 | 4-Stroke | 1985 | 93311-928U5 | |
| Yamaha | 175ETXJ / 175ETLJ | 175 | 4-Stroke | 1986 | 93311-928U5 | |
| Yamaha | 175ETXH / 175ETLH | 175 | 4-Stroke | 1987 | 93311-928U5 | |
| Yamaha | 175ETLG / 175ETXG | 175 | 4-Stroke | 1988 | 93311-928U5 | |
| Yamaha | 175ETXF / 175ETLF | 175 | 4-Stroke | 1989 | 93311-928U5 | |
| Yamaha | 175ETXDA / 175ETXD / 175ETLDA | 175 | 4-Stroke | 1990 | 93311-928U5 | |
| Yamaha | 175TLRP / 175TXRP | 175 | 4-Stroke | 1991 | 93311-928U5 | |
| Yamaha | 175TXRQ | 175 | 4-Stroke | 1992 | 93311-928U5 | |
| Yamaha | 175TXRR / 175TLRR | 175 | 4-Stroke | 1993 | 93311-928U5 | |
| Yamaha | 200ETXN / 200ETLN | 200 | 4-Stroke | 1984 | 93311-928U5 | |
| Yamaha | 200ETLK / 200ETXK | 200 | 4-Stroke | 1985 | 93311-928U5 | |
| Yamaha | 200ETXJ / 200ETLJ | 200 | 4-Stroke | 1986 | 93311-928U5 | |
| Yamaha | 200ETLH-JD / 200ETLH / 200ETXH | 200 | 4-Stroke | 1987 | 93311-928U5 | |
| Yamaha | 200ETLG-JD / 200ETLG / 200ETXG | 200 | 4-Stroke | 1988 | 93311-928U5 | |
| Yamaha | 200ETLF-JD / 200ETLF | 200 | 4-Stroke | 1989 | 93311-928U5 | |
| Yamaha | 200ETLD / 200ETXD / 200ETXDA / 200ETLDA / 200ETLD-JD | 200 | 4-Stroke | 1990 | 93311-928U5 | |
| Yamaha | P200TLRP / 200TLRP / 200TJRP / 200TXRP | 200 | 4-Stroke | 1991 | 93311-928U5 | |
| Yamaha | 200TLRQ / P200TLRQ / 200TXRQ / 200TJRQ | 200 | 4-Stroke | 1992 | 93311-928U5 | |
| Yamaha | 200TJRR / 200TLRR / P200TLRR / 200TXRR | 200 | 4-Stroke | 1993 | 93311-928U5 | |
| Yamaha | V6SPECIALLN / V6SPECIALXN | 225 | 4-Stroke | 1984 | 93311-928U5 | V6 Model Engine |
| Yamaha | V6SPECIALXJ | 225 | 4-Stroke | 1986 | 93311-928U5 | V6 Model Engine |
| Yamaha | V6SPECIALLJ | 225 | 4-Stroke | 1986 | 93311-928U5 | V6 Model Engine |
| Yamaha | V6EXCELLH / V6EXCELXH | 225 | 4-Stroke | 1987 | 93311-928U5 | V6 Model Engine |
| Yamaha | V6EXCELLG / V6EXCELXG | 225 | 4-Stroke | 1988 | 93311-928U5 | V6 Model Engine |
| Yamaha | V6EXCELLF / V6EXCELXF | 225 | 4-Stroke | 1989 | 93311-928U5 | V6 Model Engine |
| Yamaha | 225ETLDA / 225ETXD / 225ETLD | 225 | 4-Stroke | 1990 | 93311-928U5 | |
| Yamaha | 225TXRP / 225TLRP | 225 | 4-Stroke | 1991 | 93311-928U5 | |
| Yamaha | 225TXRQ / 225TLRQ | 225 | 4-Stroke | 1992 | 93311-928U5 | |
| Yamaha | 225TXRR / 225TLRR | 225 | 4-Stroke | 1993 | 93311-928U5 |
Technical Specs
- Product Type
- Needle Bearing
- Installation
- Lower Drive Vertical Shaft
- Connection
- Internal Component
- Housing Material
- Steel
- Housing Color
- Silver/Metallic
- Product Dimensions
- 6.0" (L) x 6.0" (W) x 5.0" (H)
- Fitting Type
- Press Fit
- Warranty
- Standard Manufacturer Warranty
- Other Technical Attributes
- Vertical Shaft Component - Lower Drive Unit
What’s in the Box
- 1 x Needle Bearing (93311-928U5/YA-B344)
Installation Notes
- Drain the gearcase lubricant from the lower unit.
- Disconnect the shift linkage and remove the lower unit mounting bolts.
- Carefully separate the lower unit from the outboard's upper casing.
- Disassemble the lower drive unit to access the vertical shaft assembly. Consult your service manual for the specific procedure.
- Remove the old needle bearing from its housing using an appropriate press or bearing puller.
- Clean the bearing seat thoroughly, ensuring it is free of debris and burrs.
- Press the new needle bearing into place, ensuring it is square and fully seated.
- Reassemble the vertical shaft and lower drive components in reverse order of disassembly.
- Re-attach the lower unit, connect the shift linkage, and refill with fresh gearcase lubricant.
- Test for proper operation before returning to service.
Troubleshooting & FAQ
How do I know if this needle bearing is the correct part for my motor?
The best way to confirm fitment is by matching your engine's model and year to our compatibility table. You can also verify by cross-referencing your old bearing's part number with the numbers listed in our Part Number Matrix (93311-928U5, YA-B344).
What are the signs of a failing lower unit needle bearing?
Common symptoms of a bad bearing include grinding or whining noises from the lower unit, excessive vibration, or discovery of metal shavings in the gearcase oil during a change. A worn bearing can lead to vertical shaft play and catastrophic gear failure if not addressed.
Do I need special tools for this installation?
Yes, replacing a press-fit bearing typically requires a hydraulic press or a specialized bearing driver/puller set. Attempting to install it with improper tools (like a hammer) can damage the new bearing or the gearcase housing.
How often should this bearing be replaced?
There is no fixed replacement interval. This bearing should be inspected for wear, noise, or damage whenever the lower unit is serviced or disassembled for other repairs (e.g., water pump replacement, resealing). Replace it if you find any signs of wear.
Is this the upper or lower driveshaft bearing?
This specific bearing is for the vertical shaft in the lower drive unit.
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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