Sierra Mercruiser GM Engine Thermostat Kit
Fits: 1987 & newer GM engines with standard cooling requiring a 160° thermostat
Temperature rating: 160°F
Kit Contains:
| Contents | Part |
| Gasket, Thermostat Housing | 18-2917-9 |
| Gasket, Thermostat | 18-0398-9 |
| Gasket, Thermostat Cover | 18-2844-9 |
| Gasket, Thermostat Cover | 18-2552-9 |
| Gasket, Thermostat | 18-2553-9 |
| O-Ring | 18-7173-9 |
| Thermostat | 18-3649 |
Kit doesn’t include 27-806922 (now 8M0214947) sleeve
Interchangeable with the following:
GLM
13101
Mercruiser Stern Drive
807252Q5
807252T5
807252T8
![Newmar ACCY-IX Blank Panel [ACCY-IX]](https://marinestockroom.com/wp-content/uploads/woo-upload-jobs/marinestockroom.com-20261113-full-v1/product-images/5e35dc89748ecfda1692a54632b6c942880338d3da94155493e2b4f2029a016b-300x208.webp)