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Sierra® 160° Thermostat Kit for Mercruiser® 175 / 4.3L / 4.3LX Engines, 1993-1995.
Proper thermostat operation is key in getting peak performance and maximum fuel efficiency! This marine-grade Kit will withstand the rigors of "ugly" brackish and saltwater.
Sierra® Thermostat Kit (part no. 18-3648) includes thermostat, o-ring, and gasket to replace your original kit for 5.0L Mercruiser® Engines.