Thermostat,

exhaust inner cover gasket,

exhaust outer cover gasket

for Yamaha outboard 4 HP

2 stroke "6E0" MODELS

will fit :

Yamaha 4 hp 2 stroke 1984-1999 ;

Yamaha 4 hp , 4AC, 6E0

Yamaha 4 hp , 4AS , 6E1

Yamaha 4 hp , 4A , 6E2

Replaces Yamaha part numbers

6E5-12411-00 thermostat

6e0-41112-01 gasket , exhaust inner cover

6e0-41114-01 gasket , exhaust outer cover

Please double check on the block if you have the '6E0' code on the casting.

If you have '6E3' then you have the 5hp block which is slightly different and needs different gaskets and thermostat.

The 4hp and 5hp blocks are interchangeable but internals are different

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 Thermostat & Exhaust Gasket Kit for Yamaha 2-Stroke 6E0 Outboards – Replaces 6E5-12411-00