Washer/Bush – Fits Yamaha 75-85HP Outboards (Replaces 90389-25M00-00)
Washer/Bush – Fits Yamaha 75-85HP Outboards (Replaces 90389-25M00-00) is backordered and will ship as soon as it is back in stock.
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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
Washer/Bush – Fits Yamaha 75-85HP Outboards (Replaces 90389-25M00-00)
Product Details
This aftermarket Washer/Bush – Fits Yamaha 75-85HP Outboards is a direct replacement component for Yamaha 75A, 75AE, 75AET, 75AEHD, 75AEDX, 85A, 85AE, 85AET, 85AEDL, and 85AEDX series engines. It ensures proper spacing and reduces friction within the propeller and drivetrain assembly.
It serves as a direct interchange for GLM Marine 21223, replacing the OEM part 90389-25M00-00.
- Precision-engineered for a secure and reliable fit.
- Installs within the propeller and drivetrain system.
- Package includes one essential bush for a complete replacement.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 90389-25M00-00 |
| GLM Marine | 21223 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This component is designed exclusively for specific Yamaha outboard models listed here.
| Brand | Model | Rated HP | OEM Part No. |
|---|---|---|---|
| Yamaha | 75A/AED/AEDL/AET/AEHD/AEDX | 75 | 90389-25M00-00 |
| Yamaha | 85A/AE/AET/AEDL/AEDX | 85 | 90389-25M00-00 |
Technical Specs
- Product Type
- Washer/Bush
- Installation
- Component in propeller/drivetrain system
- Dimensions
- 2.0 x 2.0 x 1.3 cm (W x L x H)
- Weight
- 0.02 kg (0.04 lb)
- Other Technical Attributes
- Precision-engineered component for secure fit
What’s in the Box
- 1 x Bush (90389-25M00-00)
Installation Notes
- Ensure the engine is off and the shifter is in the neutral position before starting work.
- Remove the propeller cotter pin, nut, washer, and propeller from the shaft.
- Slide off the old thrust washer and inspect the propeller shaft for any damage or burrs.
- Remove the old washer/bush from its housing.
- Clean the area thoroughly to remove any old grease, salt, or debris.
- Install the new bush, ensuring it is seated correctly.
- Apply a light coat of marine-grade grease to the propeller shaft splines.
- Reassemble the thrust washer, propeller, and associated hardware in reverse order.
- Torque the propeller nut to the manufacturer's recommended specification and secure it with a new cotter pin.
Troubleshooting & FAQ
How do I know if this washer/bush fits my outboard?
This part is specifically for Yamaha 75HP (75A series) and 85HP (85A series) models. The most reliable method is to confirm your engine's original part number is 90389-25M00-00. Please check the compatibility table for your exact model.
What are the signs that this component needs replacing?
Common symptoms of a worn-out bush or washer include excessive propeller vibration, unusual rattling or grinding noises from the lower unit (especially in gear), or visible signs of wear, deformation, or corrosion on the old part during an inspection.
Is this a "washer" or a "bush"? The name seems inconsistent.
This component is often described with both terms. Yamaha's official part name is "Bush," but it also serves the function of a washer in the assembly. It is the correct replacement for OEM part 90389-25M00-00, regardless of the different descriptions you may see.
Can I reuse my old propeller nut or cotter pin?
We strongly recommend using a new cotter pin every time you remove and reinstall the propeller to ensure it locks the nut securely. The propeller nut can often be reused if it is in good condition, but it should be replaced if there are any signs of damage or thread wear.
Do I need to apply grease during installation?
Yes, it is highly recommended to apply a liberal coat of high-quality marine grease to the propeller shaft splines before reinstalling the propeller. This prevents corrosion and makes future removal much easier.
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
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