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.

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}

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.

View Sierra 18-90201

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.

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

OEM & Cross Reference Numbers

Compatible Applications

Yamaha OEM number 61A-45538-00-00 is used across a large number of Yamaha four-stroke outboards. Mercury OEM 888690 references the same component used in select Mercury FourStroke applications.

Product Specifications

• Brand: GLM Marine
• Part Number: 9075GM
• Part Type: Water Pump Spacer
• Replaces Yamaha: 61A-45538-00-00
• Replaces Mercury: 888690
• Location: Water Pump Assembly
• Application: Cooling System Service & Water Pump Rebuilds

Also Available in Pro Marine Brand

Pro Marine 9075P Water Pump Spacer

Prefer Pro Marine parts? We also stock the Pro Marine version of this water pump spacer. It replaces the same Yamaha and Mercury OEM numbers and fits the same applications.

View Pro Marine 9075P

Why Replace a Water Pump Spacer?

During water pump service, technicians often inspect the spacer plate for corrosion, wear, pitting, or deformation. Because the spacer helps maintain proper alignment between the impeller housing, wear plate, and other cooling system components, damage can contribute to reduced water pump efficiency.

Replacing worn cooling system components during maintenance can help avoid cooling issues and reduce the likelihood of premature water pump failure.

GLM Water Pump Spacer Features

• Direct replacement for Yamaha 61A-45538-00-00
• Direct replacement for Mercury 888690
• Designed for water pump rebuild and cooling system service
• Fits many Yamaha F115-F300 and LF-series outboards
• Compatible with Mercury 225 EFI FourStroke applications using OEM 888690
• Precision manufactured aftermarket replacement
• Popular choice for preventative maintenance repairs

Frequently Asked Questions

What does a water pump spacer do?
The spacer helps position and support components within the water pump assembly to maintain proper alignment and cooling system operation.

Which Yamaha engines commonly use this spacer?
Common applications include Yamaha F115, F150, F175, F200, F225, F250, and F300 outboards, including many LF-series models.

Does this fit Mercury outboards?
Yes. Mercury OEM 888690 is used on select Mercury 225 EFI FourStroke models and cross references directly to this spacer.

When should I replace a water pump spacer?
Replacement is recommended whenever corrosion, pitting, excessive wear, or physical damage is found during water pump inspection.

Is the Pro Marine version available?
Yes. The Pro Marine 9075P version is linked above if you prefer that brand.

Searchable Terms

9075GM, GLM 9075GM, Yamaha 61A-45538-00-00, Mercury 888690, Yamaha F115 water pump spacer, Yamaha F150 water pump spacer, Yamaha F175 water pump spacer, Yamaha F200 water pump spacer, Yamaha F225 water pump spacer, Yamaha F250 water pump spacer, Yamaha F300 water pump spacer, Mercury 225 EFI FourStroke water pump spacer, Yamaha impeller spacer, water pump rebuild components, cooling system repair parts, GLM marine cooling system parts