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93101-25M03-00
Yamaha Upper Driveshaft Seal 28019
The 28019 Upper Driveshaft Seal replaces Yamaha OEM part numbers 93101-28019-00, 93101-28018-00, and 93101-28004-00. This seal is used in Yamaha lower unit gearcases to prevent water intrusion and retain gear lube around the driveshaft.
Fitment Overview
This seal is confirmed through Yamaha OEM lower unit diagrams and is used across both 4.2L V6 and 5.3L V8 outboard platforms. It is installed at the top of the driveshaft in the gearcase assembly.
Compatibility
| Engine Model | Horsepower | Engine Platform |
|---|---|---|
| F200 / LF200 | 200 HP | 4.2L V6 |
| F225 / LF225 | 225 HP | 4.2L V6 |
| F250 / LF250 | 250 HP | 4.2L V6 |
| VF200 / VF225 / VF250 | 200–250 HP | 4.2L SHO |
| F300 / LF300 | 300 HP | 4.2L V6 & 5.3L V8 |
| F350 / LF350 | 350 HP | 5.3L V8 |
Fits These Serial Ranges
This seal is used across multiple Yamaha gearcase generations and is not limited to a single serial break. It is commonly found in:
- 4.2L V6 outboards (modern production models)
- 5.3L V8 F300 and F350 models beginning in 2007
Important: Because Yamaha uses multiple seal variations depending on gearcase design, always verify using your exact model and serial number before ordering.
Part Numbers and Cross References
| Type | Part Number |
|---|---|
| Pro Marine | 28019 |
| Yamaha OEM | 93101-28019-00 |
| Replaces | 93101-28018-00 |
| Replaces | 93101-28004-00 |
| Application | Upper Driveshaft Seal |
What This Part Is Used For
This seal sits at the top of the driveshaft inside the lower unit, forming a barrier between the gearcase oil and external water exposure.
- Prevents water intrusion into the gearcase
- Retains gear lube under pressure
- Protects gears and bearings from contamination
- Critical for lower unit longevity
Failure of this seal can result in water-contaminated gear oil, corrosion, and expensive gearcase damage.
FAQ
Where is this seal located?
At the top of the driveshaft inside the gearcase assembly.
What happens if this seal fails?
Water enters the gearcase, causing milky oil and potential gear damage.
Is this used on both 4.2L and V8 Yamaha engines?
Yes, this seal is used across both platforms depending on gearcase design.
Do I need special tools to replace it?
Yes, lower unit disassembly and seal drivers are typically required.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 (continental U.S.).
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers
28019, 93101-28019-00, 93101-28018-00, 93101-28004-00, Yamaha F225 seal, F250 seal, VF225 VF250 seal, F300 F350 driveshaft seal
93101-28018-00
93101-28019-00
9-76413
93101-23070-00
0766495
311875
766495
GLM Marine Water Pump Washer
Yamaha 90-300HP & Mercury FourStroke Water Pump Washer
The GLM 90201GM Driveshaft Water Pump Washer is an aftermarket replacement for Yamaha OEM 90201-22M01-00 and Mercury OEM 8556822. This washer is used in the lower unit water pump assembly and is commonly serviced with the impeller, wear plate, housing, and related driveshaft components.
This GLM version is a good choice for boat owners and repair shops looking for a practical aftermarket replacement during water pump service on many Yamaha 90-300HP and Mercury FourStroke applications.
OEM Numbers & Cross References
Yamaha identifies this component as a plate washer / water pump housing plate washer under OEM number 90201-22M01-00. Mercury and Mariner cross references include 8556822 and 12-8556822.
| Type | Part Number |
|---|---|
| GLM Marine | 90201GM |
| Yamaha OEM | 90201-22M01-00 |
| Mercury / Mariner OEM | 8556822 |
| Mercury / Mariner OEM | 12-8556822 |
| Sierra | 18-90201 |
| Sierra Cross Reference | 18-9078 / 18-9079 |
Compatible Applications
Fitment should be confirmed by matching the original OEM number. Yamaha 90201-22M01-00 is listed across many Yamaha water pump and gearcase applications, including 115HP through 250HP models in detailed OEM fitment listings, while aftermarket fitment data also identifies Yamaha 2-stroke 115-300HP, Yamaha 4-stroke 115-225HP, and Mercury 225 EFI FourStroke applications. :contentReference[oaicite:0]{index=0}
| Engine Family | Common Applications |
|---|---|
| Yamaha 2-Stroke | 115HP-300HP applications using OEM 90201-22M01-00 |
| Yamaha 4-Stroke | 115HP-225HP applications using OEM 90201-22M01-00 |
| Yamaha VMAX / HPDI / OX66 | Common 150HP-300HP water pump applications |
| Yamaha F-Series | Common F115, F150, F200, F225 applications |
| Mercury FourStroke | Mercury 225 EFI FourStroke, serial number 0T653945 & up |
| Mercury / Mariner | Applications using OEM 8556822 or 12-8556822 |
Water pump washers can vary by gearcase, driveshaft, and water pump housing design. Always confirm your original OEM part number before ordering.
This GLM washer replaces Yamaha 90201-22M01-00 and Mercury 8556822 / 12-8556822.
Also Available in Sierra Brand
Sierra 18-90201 Water Pump Washer
Prefer Sierra? We also stock the Sierra 18-90201 version of this Yamaha and Mercury water pump washer for the same OEM cross references.
Where This Washer Is Used
This washer is used in the water pump and driveshaft area of the lower unit. It helps maintain the correct stack-up of components in the pump assembly, supporting proper fitment of the housing, plate, impeller, and related hardware.
Because the washer is small and inexpensive, many technicians inspect or replace it during water pump service instead of reusing a worn, corroded, or distorted washer.
GLM 90201GM Features
- Aftermarket replacement from GLM Marine
- Replaces Yamaha OEM 90201-22M01-00
- Replaces Mercury / Mariner OEM 8556822 and 12-8556822
- Used in water pump and driveshaft service
- Common on many Yamaha 2-stroke and 4-stroke outboard applications
- Common on Mercury 225 EFI FourStroke applications using the listed OEM number
- Sierra alternative linked above
FAQ
What OEM numbers does GLM 90201GM replace?
GLM 90201GM replaces Yamaha 90201-22M01-00 and Mercury / Mariner 8556822 or
12-8556822.
Is this the same as the Sierra washer?
It is the GLM version of the same application family. The Sierra 18-90201
version is linked above.
What Yamaha engines commonly use this washer?
It is commonly listed for many Yamaha 2-stroke 115-300HP and Yamaha 4-stroke
115-225HP water pump applications using OEM 90201-22M01-00.
Does this fit Mercury outboards?
Yes, when your Mercury or Mariner application uses OEM number 8556822 or
12-8556822. It is commonly listed for Mercury 225 EFI FourStroke applications.
Should this washer be replaced during water pump service?
Replace it if it shows wear, corrosion, distortion, or damage. Always follow
your service manual and parts diagram.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
90201GM, GLM 90201GM, Sierra 18-90201, 18-90201, 18-9078, 18-9079, Yamaha 90201-22M01-00, Mercury 8556822, Mercury 12-8556822, Yamaha water pump washer, Yamaha driveshaft washer, Yamaha plate washer, Yamaha F115 water pump washer, Yamaha F150 water pump washer, Yamaha F200 water pump washer, Yamaha F225 water pump washer, Yamaha VMAX water pump parts, Yamaha HPDI water pump washer, Mercury 225 EFI FourStroke water pump washer
8556822
90201-22M01-00