160 Degree Thermostat Kit | Sierra 18-3647
160 Degree Thermostat Kit | Sierra 18-3647
Sierra
22 in stock
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160 Degree Thermostat Kit | Sierra 18-3647
160 degree thermostat kit fits many different Mercruiser closed cooled marine engines.
- Fits Mercruiser 3.0L 184 CID fresh water cooled engines from 1990 to 2010 with serial number range C856559 & up
- Fits Mercruiser 3.0L 181CID fresh water cooled engines from 2008 to 2010 with serial number range A072812 & up
- Fits Mercruiser 4.3L 262 V-6 fresh water cooled engines from 1996 to 1997 with serial number range 0F803800 to OK999999
- Fits Mercruiser 230 GM 5.0L fresh water cooled engines with serial number range 0B525982 to 0F600999
- Fits Mercruiser 260 GM 350 CID fresh water cooled engines with serial number range 0B525982 to 0F600999
- Kit includes 18-3649 160 degree thermostat,18-2844 cover gasket, 18-2552 cover gasket, 18-2553 cover gasket, 18-7173 o-ring, 18-2917 housing gasket
- Replaces Mercury 807252Q5, 807252T5
- Replaces Mallory 9-43157
! 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.