Needle Bearing Vertical Shaft – Fits Yamaha 50-90HP Outboards (Replaces 93315-325V1-00)
Needle Bearing Vertical Shaft – Fits Yamaha 50-90HP Outboards (Replaces 93315-325V1-00) 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
Needle Bearing Vertical Shaft – Fits Yamaha 50-90HP Outboards (Repl...
Product Details
This is a replacement Needle Bearing Vertical Shaft – Fits Yamaha 50-90HP Outboards, designed for various 2-stroke outboard engines including popular 75HP, 80HP, 85HP, and 90HP models. It serves as a direct-fit internal component engineered to meet or exceed original equipment specifications for reliable performance.
It directly interchanges with Yamaha OEM part 93315-325V1-00 and other aftermarket equivalents like Red Rhino YA-B325.
- Designed as a high-precision internal engine component.
- Features a full complement, single-row design for robust load handling.
- Covered by a 1-year manufacturer warranty against defects.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 93315-325V1-00 | OEM Reference |
| Red Rhino | YA-B325 | Aftermarket Interchange |
| Alternate | BH-1620 | Aftermarket Interchange |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This bearing is specified for a range of Yamaha 2-stroke outboard motors from 50HP to 90HP. Always verify your specific model and year against the OEM part number.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | Various 90HP models | 90 | 2-Stroke | –2003 | 93315-325V1-00 | Red Rhino lists compatibility through 2003 |
Technical Specs
- Product Type
- Needle Bearing (Vertical Shaft)
- Installation
- Internal engine component
- Dimensions
- 3.5 × 9.0 × 9.0 in
- Weight
- 0.07 kg (0.15 lb)
- Material
- Chrome Steel/GCr15
- Precision Rating
- P6
- Retainer Type
- None (full complement)
- Configuration
- Single row
- Seals Type
- Open
- OEM Part Number
- 93315-325V1-00
- Alternate Part Number
- BH-1620
- Warranty
- 1 year
What’s in the Box
- 1 × Needle Bearing Vertical Shaft (93315-325V1-00)
Installation Notes
- Disconnect the battery and ensure the engine is secured and cannot start accidentally. Always follow the manufacturer’s service manual for your specific engine model.
- Access the vertical shaft assembly, which typically requires removing the lower unit (gearcase) from the outboard.
- Following the service manual, remove the old vertical shaft needle bearing. This may require a specialized bearing puller.
- Thoroughly clean the bearing housing and surrounding area to remove any old grease, debris, or metal shavings.
- Using a suitable bearing press or driver, carefully install the new needle bearing into the housing until it is properly seated. Do not use a hammer directly on the bearing.
- Reassemble all components in the reverse order of disassembly, ensuring all bolts are torqued to the manufacturer's specifications.
Troubleshooting & FAQ
How do I know if this bearing fits my specific Yamaha engine?
The best way to confirm fitment is to match the OEM part number 93315-325V1-00 from your engine's parts diagram or service manual. While this part fits many 50-90HP 2-stroke models, checking the number is essential.
What are common signs that my vertical shaft bearing is failing?
Symptoms of a worn or failing vertical shaft bearing include a grinding or whining noise from the lower unit, excessive vibration, or noticeable play in the driveshaft. A professional inspection is recommended for accurate diagnosis.
Is any special tool required for installing this bearing?
Yes, installation of press-fit bearings typically requires specialized tools like a bearing puller to remove the old one and a bearing driver or press to install the new one without causing damage. We recommend professional installation.
How does this aftermarket bearing compare to the original Yamaha OEM part?
This part is manufactured to meet or exceed OEM specifications using comparable high-quality materials (GCr15 Chrome Steel) and precision ratings (P6). It is designed to offer similar performance and durability to the original part at a better value.
What is the recommended maintenance or replacement interval?
Bearings are typically replaced during a lower unit rebuild or when signs of wear appear. There is no fixed replacement interval; it depends on usage hours, operating conditions (saltwater vs. freshwater), and maintenance practices.
Can this bearing be used in both saltwater and freshwater?
Yes, this bearing is made from GCr15 chrome steel, which is suitable for marine environments. However, longevity in saltwater always depends on proper maintenance, regular flushing, and ensuring gearcase seals are intact to prevent water intrusion.
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.
