160 Degree Thermostat | Sierra 18-3555
160 Degree Thermostat | Sierra 18-3555
Sierra
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160 Degree Thermostat | Sierra 18-3555
Thermostat used on many different Mercruiser fresh water cooled marine engines.
- Fits various model Mercruiser closed cooled marine engines
- Replaces Mercury 99155A1, 99155T2
- Replaces Mallory 9-43001, 9-43016
! 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.