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18-3040
63V-44352-00-00
63V-44352-01-00
8M0175386
8M6010335
8M6014002
18-3625
6F5-12411-01-00
6F5-12411-02-00
6F5-12411-03-00
814554M
814554T01
814554001
8925
689-44352-01-00
689-44352-02-00
8M0175388
8M6010331
81604M
84797M
9-45600
6L2-44352-00-00
8M0175391
8M6010333
8M6014000
879128
6CE-44352-00-00
6CE-44352P
8M0175392
8M6010334
Pro Marine Thermostat Assembly
Aftermarket Yamaha 4.2L V6 Thermostat
This Pro Marine thermostat assembly is an aftermarket replacement for Yamaha OEM part number 6CE-12411-00-00 and Mercury cross reference 8M6012799.
The thermostat regulates engine cooling system temperature to help maintain proper engine operating temperature, fuel efficiency, corrosion protection, and reliable engine performance.
Compatible Applications
| Engine Range | Engine Type | System | Application Notes |
|---|---|---|---|
| Yamaha F225 / LF225 | 4.2L FourStroke V6 | Cooling System | Select models using thermostat 6CE-12411-00-00 |
| Yamaha F250 / LF250 | 4.2L FourStroke V6 | Cooling System | Select offshore and standard rotation applications |
| Yamaha F300 / LF300 | 4.2L FourStroke V6 | Cooling System | Used in compatible offshore cooling systems |
| Yamaha VF250 | V MAX SHO 4.2L | Cooling System | Select SHO cooling system applications |
Mercury OEM number 8M6012799 cross references this Yamaha thermostat for compatible Mercury-branded Yamaha powerhead applications.
Always verify your model number, serial number, and cooling system diagram before ordering thermostats and cooling system components.
OEM Part Numbers & Cross References
| Brand / Type | Part Number |
|---|---|
| Pro Marine | 6CE-12411P |
| Replaces Yamaha OEM | 6CE-12411-00-00 |
| Replaces Mercury OEM | 8M6012799 |
| Alternate Search Format | 6CE124110000 |
OEM and EMP Alternatives
What This Thermostat is Used For
This thermostat is used in compatible Yamaha and Mercury FourStroke cooling systems to regulate engine operating temperature.
The thermostat controls coolant flow through the engine to help the engine warm up properly and maintain consistent operating temperature.
A faulty thermostat may contribute to overheating, improper engine temperature, poor fuel efficiency, or excessive engine wear.
Replacing worn thermostats during cooling system maintenance helps maintain reliable engine performance and cooling system operation.
Key Features and Benefits
- Pro Marine aftermarket thermostat assembly
- Replaces Yamaha thermostat 6CE-12411-00-00
- Fits select Yamaha F225, F250, F300, LF-series, and VF250 models
- Designed for Yamaha 4.2L V6 cooling systems
- Helps maintain proper engine operating temperature
- Supports cooling system performance and engine efficiency
- Aftermarket alternative to OEM Yamaha thermostat
Thermostat Details
- Brand: Pro Marine
- Part Type: Thermostat Assembly
- Pro Marine Part Number: 6CE-12411P
- Replaces OEM: Yamaha 6CE-12411-00-00
- Mercury Cross Reference: 8M6012799
- Application: Yamaha 4.2L V6 Cooling Systems
- System: Cooling System
- Use: Engine temperature regulation
- Quantity Sold: Each
FAQ
What does Pro Marine 6CE-12411P replace?
This thermostat replaces Yamaha OEM thermostat 6CE-12411-00-00 and Mercury thermostat 8M6012799.
What engines does this thermostat fit?
This thermostat fits select Yamaha F225, F250, F300, LF-series, and VF250 4.2L V6 outboards.
What does this thermostat do?
It regulates engine cooling system temperature and coolant flow.
Can a bad thermostat cause overheating?
Yes. A faulty thermostat may restrict coolant flow or prevent proper engine temperature regulation.
Is this an OEM Yamaha thermostat?
No. This is a Pro Marine aftermarket replacement thermostat.
Are OEM and EMP versions available?
Yes. OEM Yamaha and EMP replacement versions are also available.
Should I verify fitment before ordering?
Yes. Yamaha used multiple thermostat configurations depending on model and production range.
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.
- Cooling system components should be installed only after confirming correct fitment.
- 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 Terms
6CE-12411P, 6CE-12411-00-00, 8M6012799, Pro Marine thermostat, Yamaha thermostat, Yamaha 4.2 thermostat, Yamaha F225 thermostat, Yamaha F250 thermostat, Yamaha F300 thermostat, Yamaha LF250 thermostat, Yamaha LF300 thermostat, Yamaha VF250 thermostat, Mercury thermostat, Mercury 8M6012799, offshore thermostat, cooling system thermostat, FourStroke thermostat
6CE-12411-00-00
8M6012799
6CB-12411-10-00
8M0175322
8M6010297
Pro Marine 60° Thermostat for Yamaha F115 F130 VF115
The Pro Marine 6EK-12411P is a 60°C aftermarket thermostat for select Yamaha F115, LF115, F130, LF130 and VF115 FourStroke outboards. It replaces Yamaha OEM 6EK-12411-00-00 and helps regulate cooling-water flow so the engine can reach and maintain its proper operating temperature.
Pro Marine Aftermarket Replacement
This is a Pro Marine aftermarket thermostat, not a genuine Yamaha OEM part. It is designed as a direct replacement for applications that specify Yamaha thermostat 6EK-12411-00-00. A genuine Yamaha version is also available below.
Compatible Applications
This thermostat fits the following Yamaha outboard families when the engine parts diagram specifies OEM number 6EK-12411-00-00.
| Engine Family | Applicable Models | Catalog Range |
|---|---|---|
| Yamaha F115JB | F115JB and applicable _0120 through _0123 variants | 2006-Present |
| Yamaha F115LB Series | F115LB, F115LB2, F115LB3 and applicable catalog variants | 2006-Present |
| Yamaha F115XB Series | F115XB, F115XB2 and applicable catalog variants | 2006-Present |
| Yamaha LF115XB Series | LF115XB, LF115XB2 and applicable catalog variants | 2006-Present |
| Yamaha F130 and LF130 | F130LA, F130XA and LF130XA | 2006-Present |
| Yamaha VF115LA and VF115LB | VF115LA, VF115LB and applicable -20, _0120, _0121, _0222, _0223 and _0324 variants | 2006-Present |
| Yamaha VF115XA and VF115XB | VF115XA, VF115XB and applicable -20, _0120, _0121, _0222, _0223 and _0324 variants | 2006-Present |
Important Fitment Note
Yamaha model suffixes identify specific production versions and configurations. Confirm your complete engine model and verify that the applicable OEM parts diagram calls for thermostat 6EK-12411-00-00 before ordering. Do not order using horsepower alone.
OEM & Cross Reference Numbers
| Brand | Part Number | Reference Type |
|---|---|---|
| Pro Marine | 6EK-12411P | Aftermarket part number |
| Yamaha OEM | 6EK-12411-00-00 | Primary OEM reference |
| Mercury | 8M0175396 | Superseded reference |
| Mercury | 8M6010301 | OEM cross reference |
| Mercury | 8M6013870 | OEM cross reference |
| Sierra | 18-3639 | Aftermarket cross reference |
What This Part is Used For
The thermostat regulates cooling-water flow through the engine. It remains closed while the engine is cold to help the powerhead warm up efficiently, then opens as operating temperature increases.
A properly functioning thermostat helps the engine maintain a consistent operating temperature, supporting dependable idle quality, efficient combustion and proper cooling-system performance.
Key Features and Benefits
A cost-effective aftermarket option for engines specifying Yamaha OEM 6EK-12411-00-00.
Designed to help maintain the correct operating temperature in the listed Yamaha applications.
Installs in the original thermostat location without modifying the engine.
Fits verified F115, LF115, F130, LF130 and VF115 model families.
Genuine Yamaha OEM Version Available
Yamaha Thermostat 6EK-12411-00-00
Prefer the factory Yamaha component? Choose the genuine OEM thermostat manufactured for applications specifying Yamaha part number 6EK-12411-00-00.
View Genuine Yamaha ThermostatFrequently Asked Questions
Is this a genuine Yamaha thermostat?
No. This is a Pro Marine aftermarket thermostat designed to replace Yamaha OEM number 6EK-12411-00-00.
What temperature is this thermostat?
This is a 60°C thermostat for the listed Yamaha FourStroke applications.
What engines does it fit?
It fits select Yamaha F115, LF115, F130, LF130 and VF115 models that use OEM thermostat 6EK-12411-00-00.
What are common symptoms of a failing thermostat?
Possible symptoms include overheating, slow engine warm-up, inconsistent operating temperature or visible corrosion and deposits around the thermostat.
How should I verify fitment?
Confirm your complete engine model and check that the applicable OEM parts diagram specifies Yamaha thermostat 6EK-12411-00-00.
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 Part Numbers
6EK-12411P, 6EK12411P, 6EK-12411-00-00, 6EK124110000, 8M0175396, 8M6010301, 8M6013870, 18-3639, Yamaha F115 thermostat, Yamaha LF115 thermostat, Yamaha F130 thermostat, Yamaha LF130 thermostat, Yamaha VF115 thermostat, Yamaha V MAX SHO thermostat, Pro Marine thermostat, 60 degree Yamaha thermostat
6EK-12411-00-00
6EK-12411-00-00
8M0175396
8M6010301
8M6013870