180 Degree Thermostat Kit | Sierra 18-3666
180 Degree Thermostat Kit | Sierra 18-3666
Sierra
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180 Degree Thermostat Kit | Sierra 18-3666
180 degree thermostat kit used on various Volvo AQ model marine engines.
- Fits Volvo Penta AQ120B engines from 1977 to 1980
- Fits Volvo Penta AQ140A engines from 1975 to 1979
- Fits Volvo Penta AQ145A and AQ145B engines from 1979 to 1985
- Fits Volvo Penta AQ171A and AQ171C engines from 1986 to 1989
- Fits Volvo Penta 230A and 230C engines from 1989 to 1993
- Kit includes 180 degree thermostat and 18-2933 sealing ring
- Replaces Volvo Penta 875580
- Replaces Mallory 9-43010
! 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.