Thermostat

for Yamaha outboard 4HP and 5HP

will fit :

Yamaha 4 hp 5 hp 2 stroke 1984 and up

Yamaha 4 hp , 4AC, 6E0

Yamaha 4 hp , 4AS , 6E1

Yamaha 4 hp , 4A , 6E2

Yamaha 5 hp, 5C 6E3

Replaces Yamaha part numbers

6E5-12411-00 thermostat

Why Buy from SSI Marine:

Workshop-tested aftermarket & OEM-spec parts

Fast UK dispatch (same-day before 1 PM Mon–Fri)

Tracked 24-hour UK delivery

UK stock – collection available from Leigh (Manchester)

Technical support available

Buyer Responsibility:
Please confirm compatibility with your engine model and serial number before purchase.
If unsure, contact us — our technical team will be happy to help.

For general guidance on choosing the correct outboard parts, visit our help page:
https://ssimarine.co.uk/blogs/news/blogs-news-how-to-order-the-correct-outboard-parts

4HP 5HP Thermostat for Yamaha 2-Stroke Outboards – Replaces 6E5-12411-00