Sierra 18-0977 Thermostat Gasket
- Brand:
- Sierra
- Part no:
- 18-0977
Where to buy
View on Amazonpaid link
This is the Sierra 18-0977 thermostat gasket, a replacement for Johnson/Evinrude outboards. It is cross-referenced to Johnson/Evinrude numbers 321897 and 332369. No material, thickness or engine application list is given beyond the Johnson/Evinrude outboard reference, so check the old gasket against it before fitting.
Our take
The 18-0977 is a plain thermostat gasket for Johnson/Evinrude outboards, with the cross-references 321897 and 332369 as the way to match it. With no material or thickness stated, compare it with the old gasket before fitting.