Sierra 18-3651 Thermostat Kit-Mercruiser V6 and V8

Mercruiser (142 degree)For use on Mercruiser I/O cooling systems. Contains:•(1) 18-2554 Thermostat Cover Gasket - replaces O.E.# 27-90556•(1) 18-2553 Thermostat Cover Gasket - replaces O.E.# 27-47510•(1) 18-2834 Thermostat Cover Gasket - replaces O.E.# 27-60208•(1) 18-2844 Thermostat Cover Gasket - replaces O.E.# 27-48818-1•(1) 18-3551 Thermostat - replaces O.E.# 59137