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MAR-FLTHD-10-BK
55481
89876
89876A3
9-37855
9-37862
8M0100493
823174
823174T
9-73404
GLM Yamaha Piston Ring Kit
Yamaha 115-250HP Standard Piston Ring Kit
The GLM 3937GM Standard Piston Ring Kit is an aftermarket replacement ring set designed for a wide range of Yamaha 2-stroke outboards. This standard bore ring kit replaces several Yamaha OEM piston ring assemblies and is commonly used during powerhead rebuilds, piston replacement, compression restoration, and complete engine overhauls.
This GLM ring kit replaces Yamaha OEM numbers 6K7-11601-02-00, 6R5-11603-00-00, 64D-11603-00-00, 64D-11603-01-00, and 64D-11603-02-00.
Compatible Applications
Based on Yamaha OEM supersessions and application data, this ring kit is commonly used on Yamaha V4 and V6 2-stroke outboards including many carbureted, EFI, Saltwater Series, ProV, Excel, and OX66 models that utilize the OEM numbers listed above.
| Manufacturer | Models | Years |
|---|---|---|
| Yamaha | 115HP 2-Stroke | Various Applications |
| Yamaha | 130HP 2-Stroke | Various Applications |
| Yamaha | 150HP 2-Stroke | Various Applications |
| Yamaha | 175HP 2-Stroke | Various Applications |
| Yamaha | 200HP 2-Stroke | Various Applications |
| Yamaha | 225HP 2-Stroke | Various Applications |
| Yamaha | 250HP 2-Stroke | Various Applications |
Yamaha used multiple piston and ring designs across engines with similar horsepower ratings. Always verify your original Yamaha OEM ring number before ordering.
This kit replaces OEM numbers 6K7-11601-02-00, 6R5-11603-00-00, 64D-11603-00-00, 64D-11603-01-00, and 64D-11603-02-00.
OEM & Cross Reference Numbers
| Type | Part Number |
|---|---|
| GLM Part Number | 3937GM |
| Yamaha OEM | 6K7-11601-02-00 |
| Yamaha OEM | 6R5-11603-00-00 |
| Yamaha OEM | 64D-11603-00-00 |
| Yamaha OEM | 64D-11603-01-00 |
| Current Yamaha OEM | 64D-11603-02-00 |
| Sierra | 18-39320 |
Product Specifications
- Brand: GLM Marine
- Part Number: 3937GM
- Part Type: Piston Ring Kit
- Size: Standard Bore
- Bore Diameter: 3.544"
- Engine Type: Yamaha 2-Stroke Outboards
- Application: Standard Bore Rebuilds and Piston Service
Prefer Pro Marine?
Pro Marine 3937 Standard Piston Ring Kit
Looking for the Pro Marine version? We also stock the Pro Marine 3937 Standard Piston Ring Kit for the same Yamaha applications and OEM cross references.
What This Part Is Used For
Piston rings seal combustion pressure, help transfer heat from the piston to the cylinder wall, and maintain proper compression. Replacing worn rings during a rebuild helps restore engine performance and reliability.
This standard-size ring kit is intended for engines that remain within factory bore specifications and do not require oversized pistons or rings.
Key Features & Benefits
- GLM Marine aftermarket piston ring kit
- Standard bore replacement
- 3.544" bore size
- Replaces multiple Yamaha OEM piston ring assemblies
- Ideal for powerhead rebuilds and piston replacement
- Manufactured to OEM specifications
- Pro Marine alternative linked above
FAQ
Is this a standard size ring kit?
Yes. Part number 3937GM is a standard bore piston ring kit.
What Yamaha OEM numbers does this replace?
It replaces 6K7-11601-02-00, 6R5-11603-00-00, 64D-11603-00-00, 64D-11603-01-00, and 64D-11603-02-00.
Can I use this on an oversized piston?
No. This is a standard-size ring kit. Oversized pistons require matching oversized rings.
Do you carry a Pro Marine version?
Yes. The Pro Marine 3937 version is linked above.
Should I replace rings during a rebuild?
Yes. Replacing piston rings is standard practice during most powerhead rebuilds and piston service procedures.
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 internal engine parts are not returnable.
- Return authorization is required before sending items back.
Searchable Terms
3937GM, GLM 3937GM, Yamaha piston ring kit, Yamaha standard ring kit, Yamaha 115 piston rings, Yamaha 130 piston rings, Yamaha 150 piston rings, Yamaha 175 piston rings, Yamaha 200 piston rings, Yamaha 225 piston rings, Yamaha 250 piston rings, Yamaha V4 piston rings, Yamaha V6 piston rings, 6K7-11601-02-00, 6R5-11603-00-00, 64D-11603-00-00, 64D-11603-01-00, 64D-11603-02-00, 18-39320, GLM Marine, Pro Marine 3937
6K7-11601-02-00
6R5-11603-00-00
64D-11603-00-00
64D-11603-01-00
64D-11603-02-00
42364A91
42364A92
689-W0001-C2-00
689-W0001-22-00
GLM Marine Replacement Component
Yamaha V4 V6 115-300HP & Mercury 225/250 Driveshaft Collar
The GLM 9076GM Driveshaft Collar is an aftermarket replacement designed for Yamaha and Mercury outboards utilizing Yamaha OEM 61A-45527-00-00 and Mercury OEM 8886901. Installed within the water pump assembly, this collar helps maintain proper alignment of critical cooling system components.
Whether you're rebuilding a complete water pump, servicing a lower unit, or performing preventative maintenance, the GLM 9076GM offers a dependable replacement option for a wide range of Yamaha V4 and V6 outboards as well as Mercury EFI FourStroke models.
OEM Numbers & Cross References
The GLM 9076GM cross references directly to Yamaha OEM 61A-45527-00-00 and Mercury OEM 8886901.
| Manufacturer | Part Number |
|---|---|
| GLM Marine | 9076GM |
| Yamaha OEM | 61A-45527-00-00 |
| Mercury OEM | 8886901 |
| Pro Marine | 45527P |
| Sierra | 18-9076 |
| Mercury OEM Part | 45527 |
Compatible Applications
Yamaha OEM 61A-45527-00-00 is used across a broad range of Yamaha V4 and V6 engines, including many Saltwater Series, EFI, OX66, VMAX, and four-stroke models. Mercury OEM 8886901 is commonly found on Mercury 225 and 250 EFI FourStroke outboards.
| Manufacturer | Common Applications |
|---|---|
| Yamaha | 115HP, C115, S115 |
| Yamaha | 130HP, L130 |
| Yamaha | 150HP, C150, D150, DX150, FL150, LF150, LX150, SX150, VX150, VZ150, Z150 |
| Yamaha | 175HP Models |
| Yamaha | 200HP, F200, LF200, LX200, SX200, VX200, VZ200, Z200 |
| Yamaha | 225HP, F225, LF225, LX225, VX225, V225, OX66 225, VMAX 225 |
| Yamaha | 250HP, L250, LX250, SX250, VX250, VZ250, Z250, OX66 250 |
| Yamaha | 300HP, LZ300, VZ300, Z300 |
| Mercury | 225 EFI FourStroke |
| Mercury | 250 EFI FourStroke |
Yamaha used several lower unit and water pump designs across various engine families. Always confirm your OEM part number before ordering.
This GLM collar replaces Yamaha OEM 61A-45527-00-00 and Mercury OEM 8886901.
Alternative Brands Available
Mercury OEM 45527
Genuine Mercury factory replacement for customers seeking original equipment parts.
View OEM Version
Pro Marine 45527P
Popular aftermarket replacement used by marine repair shops and technicians.
View Pro Marine Version
Designed for Water Pump Service & Rebuilds
The driveshaft collar works as part of the lower unit cooling system assembly. During water pump service, technicians frequently inspect and replace collars, spacers, wear plates, seals, and impellers together to help restore proper cooling system performance.
Because these components operate in a harsh marine environment, replacing worn parts during maintenance can help reduce the likelihood of future cooling system issues.
GLM 9076GM Features
- Replaces Yamaha OEM 61A-45527-00-00
- Replaces Mercury OEM 8886901
- Fits Yamaha V4 and V6 applications from 115HP through 300HP
- Fits Mercury 225 and 250 EFI FourStroke models
- Designed for lower unit cooling system repairs
- Ideal for water pump rebuilds and preventative maintenance
- Cost-effective aftermarket replacement
Why Choose GLM Marine Parts?
GLM Marine has supplied aftermarket marine engine components for decades and is well known throughout the boating industry for offering dependable replacement parts for outboard, sterndrive, and inboard applications.
The GLM 9076GM provides boat owners and marine technicians with a practical alternative to OEM components while maintaining compatibility with the original application.
FAQ
What OEM numbers does GLM 9076GM replace?
Yamaha 61A-45527-00-00 and Mercury 8886901.
What engines commonly use this driveshaft collar?
Many Yamaha V4 and V6 engines from 115HP through 300HP as well as Mercury 225 and 250 EFI FourStroke models.
Is this a genuine Mercury part?
No. This is a GLM Marine aftermarket replacement. The Mercury OEM version is linked above.
Do you stock other brands?
Yes. We also carry Mercury OEM, Pro Marine, and Sierra versions of this driveshaft collar.
When should this part be replaced?
The collar should be inspected during water pump service and replaced if wear, corrosion, or damage is present.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or marine industry professional? We offer dealer pricing for qualified 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 and unused.
- Installed parts are not returnable.
- Return authorization required before returning merchandise.
Need assistance?
Contact Us
Phone: 941-721-3000
Searchable Terms
GLM 9076GM, 9076GM, Yamaha 61A-45527-00-00, Mercury 8886901, Yamaha V4 driveshaft collar, Yamaha V6 driveshaft collar, Yamaha OX66 water pump parts, Yamaha VMAX cooling system parts, Yamaha 225 driveshaft collar, Yamaha 250 driveshaft collar, Mercury 225 EFI FourStroke driveshaft collar, Mercury 250 EFI FourStroke driveshaft collar, Pro Marine 45527P, Sierra 18-9076, Mercury OEM 45527, GLM Marine replacement parts
61A-45527-00-00
8886901
0769163
18-8300
18-8300
86011
878966
9-76221
8M0103095
8M0146203
809097
20233
29641