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Home  >  Outboard  >  Yamaha Outboard  >  Cooling System | Yamaha Outboard  >  Thermostats | Yamaha Outboard
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Thermostat

Yamaha F150-F250 60 Degree
Item#:
6CB-12411P
Cross Reference#:
18-3637
6CB-12411-10-00
8M0175322
8M6010297
Manufacturer Item:
6CB-12411-10-00
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
32.08
Each

Thermostat

Yamaha F115 2006 & Up
Item#:
6EK-12411P
Cross Reference#:
18-3639
6EK-12411-00-00
6EK-12411-00-00
8M0175396
8M6010301
8M6013870
Manufacturer Item:
6EK-12411-00-00
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
33.31
Each

Yamaha Thermostat Assembly OEM 6CE-12411-00-00 4.2L V6

OEM Yamaha 4.2L V6 Thermostat 52 Degree C

OEM Yamaha Thermostat Assembly

Genuine Yamaha 4.2L V6 Thermostat

This genuine OEM Yamaha thermostat assembly replaces Yamaha part number 6CE-12411-00-00 and also cross references Mercury OEM number 8M6012799.

The thermostat regulates engine cooling system temperature to help maintain proper engine operating temperature, fuel efficiency, corrosion protection, and overall 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


Fitment Note: This thermostat is used in Yamaha 4.2L V6 FourStroke cooling systems including many offshore, LF counter-rotation, and VF SHO 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
Yamaha OEM 6CE-12411-00-00
Mercury OEM Cross Reference 8M6012799
Alternate Search Format 6CE124110000

Alternative Thermostat Options

Looking for aftermarket replacement options?

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

  • Genuine OEM Yamaha thermostat assembly
  • 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
  • Common replacement during cooling system service
  • OEM Yamaha fit and temperature calibration

Thermostat Details

  • Brand: Yamaha OEM
  • Part Type: Thermostat Assembly
  • OEM Part Number: 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 Yamaha 6CE-12411-00-00 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.

Are aftermarket versions available?
Yes. Pro Marine and EMP aftermarket 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.

Apply for a Dealer Account

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-12411-00-00, 8M6012799, 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

Item#:
6CE-12411-00-00
Cross Reference#:
18-3524
6CE-12411-00-00
8M6012799
Manufacturer Item:
6CE-12411-00-00
Manufacturer:
Yamaha Outboard
Available:
In Stock
Your Price:
52.40
Each

Thermostat 50°C

Yamaha 60/70hp 2006 & Up Honda 4-75hp
Item#:
12414
Cross Reference#:
18-3622
18-3627
19300-881-761
6H3-12411-00-00
6H3-12411-01-00
6H3-12411-10-00
6H3-12411-11-00
Manufacturer Item:
6H3-12411-11-00
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
23.12
Each

Thermostat

Yamaha F150-F200 2012-Up Suzuki 300-350hp 2020 & Up
Suzuki 
300hp 
325hp
350hp
Item#:
6DA-12411P
Cross Reference#:
17670-98L20
18-3636
6DA-12411-00-00
6DA-12411-01-00
8M0175324
8M6010299
Manufacturer Item:
6DA-12411-01-00
Manufacturer:
Pro Marine
Available:
Out of Stock
ETA:
07/30/2026
Your Price:
51.24
Each

Thermostat 60 Deg

Yamaha F70-F90 2017 & UP VF90 2018 & Up & Mercury
Item#:
6FP-12411P
Cross Reference#:
18-3641
6FP-12411-00-00
8M0175325
8M6010300
Manufacturer Item:
6FP-12411-00-00
Manufacturer:
Pro Marine
Available:
Out of Stock
ETA:
07/30/2026
Your Price:
36.00
Each

Gasket, Thermostat

Yamaha F6-9.9HP 1985 & UP
Yamaha
F6 2001-2004
F8 2001-2024 
T8 2001-2004
F9.9 1985-2024
T9.9 1985-2024
Item#:
1421
Cross Reference#:
18-99120
6G8-12414-A0-00
6G8-12414-00-00
60R-E2414-A0-00
Manufacturer Item:
6G8-12414-A0-00
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
2.32
Each

Gasket, Thermostat Cover

Yamaha F15-F20HP 4-Stroke 2006-2024
Item#:
1423
Cross Reference#:
6AH-12414-00-00
Manufacturer Item:
6AH-12414-00-00
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
2.58
Each

Gasket, Thermostat Cover

Yamaha F150 2005-2024 4 Stroke
Item#:
1422
Cross Reference#:
18-99127
63P-12414-00-00
Manufacturer Item:
63P-12414-00-00
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
7.73
Each

Gasket, Thermostat Cover

Yamaha 20-25HP 4-Stroke 2017-2024
Item#:
1424
Cross Reference#:
6FM-12414-00-00
Manufacturer Item:
6FM-12414-00-00
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
1.65
Each

Gasket, Thermostat Cover

Yamaha F2.5(2003-Later) F4(2002-Later) F8(2006-Later)
Item#:
18-0754
Cross Reference#:
67D-12414-A0-00
68D-E1241-4A-00
68D-E2414-A0-00
Manufacturer Item:
68D-E2414-A0-00
Manufacturer:
Sierra
Available:
Out of Stock
Your Price:
1.61
Each
This item is discontinued

Gasket, Thermostat

Yamaha HPDI
Item#:
2414
Cross Reference#:
18-45714
18-45714
18-60508
18-60508
18-60508
18-60508
18-60508
18-60508
18-60508
18-60508
541-34
541-34
541-34
60V-12414-A0-00
60V-12414-A0-00
60V-12414-A0-00
60V-12414-A0-00
60V-12414-A0-00
60V-12414-A0-00
60V-12414-A0-00
60V-12414-A0-00
Manufacturer Item:
60V-12414-A0-00
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
1.70
Each
|◀ ◀ 13 - 24 of 40 ▶ ▶|
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