160 Degree Thermostat Kit | Sierra 18-3644
160 Degree Thermostat Kit | Sierra 18-3644
Sierra
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160 Degree Thermostat Kit | Sierra 18-3644
160 degree thermostat kit for Mercruiser 4.3L and 4.3LX freshwater cooled engines from serial number F001220 & up.
- Fits Mercruiser 4.3L and 4.3LX closed cooled marine engines from serial number range F001220 & up
- Kit includes a 18-3649 160 degree thermostat, 18-2553 cover gasket and 18-2917 cover gasket
- Replaces Mercury 807252T2
! Compatibility references are provided for informational purposes only and do not constitute a fitment guarantee. Part numbers, application listings, and "replaces" cross-references are based on manufacturer data and are intended as a starting point for identification — not a guarantee of fit for your specific engine, hull, or installation.
Buyer is solely responsible for verifying compatibility with their engine model, serial number, model year, and trim configuration before purchase. If you are unsure whether this part fits your application, contact MacombMarineParts.com before you buy — we're available via text, email, or online chat to help verify compatibility for your specific application.
MacombMarineParts.com is not liable for parts ordered based on assumed fitment. Returns due to buyer-selected incorrect fitment are subject to our standard return and restocking fee policies.