Thermostat – 50°C / 122°F
For Yamaha 2-Stroke Outboard Engines

25 30 75 80 90 HP
Replaces Yamaha Part Numbers:
6E5-12411-00, 6E5-12411-01, 6E5-12411-02, 688-12411-00

This marine-grade thermostat is designed for use in Yamaha 2-stroke outboards, helping regulate optimal engine temperature and performance. Set to open at 50°C / 122°F, it ensures proper cooling during operation and reliable thermal protection.

Fits Yamaha 2-Stroke Models (Various Years):

• 25JEO / 25J / 25ESH
• 30DETO / 30DMH / 30MLH / 30DEO / 30ELH
• 75CETO / 75TLR / 75AE / 75B
• 80A / 80AEO / 80AET / 80AEM
• 90AET / 90TLRC / 90AEO

Product Features:
• 50°C / 122°F opening temperature
• Replaces OEM part numbers: 6E5-12411-00, 01, 02 / 688-12411-00
• Built from corrosion-resistant marine-grade materials
• Direct-fit replacement
• Ideal for restoring proper engine temperature control

If you have any concerns regarding compatibility, please message us before purchase.
Buyers are responsible for confirming fitment.

⚓ Why Buy from SSI Marine?

• Quality marine parts in UK stock
• Same-day dispatch before 1PM
• Fast, tracked delivery
• Friendly, expert marine support

Choose SSI Marine — trusted by outboard owners and marine professionals across the UK.

25 30 75 80 90 HP Thermostat 50°C for Yamaha 2-Stroke Outboard Replaces 688-12411-00