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Sierra® Thermostat Kit for Mercruiser® 340 HP Engines 1981-1987, 7.4 Bravo / 350 Mag Engines 1988-1995.
Proper thermostat operation is key in getting peak engine performance and maximum fuel efficiency!
This marine-grade Kit will withstand the rigors of "ugly" brackish and saltwater. Sierra® Thermostat Kit (part no. 18-3668) replaces your original thermostat, o ring, and gasket.Kit contains:
- Thermostat (part no. 18-3551)-replaces O.E.M. part no. 59137
- Thermostat Cover Gasket (part no. 18-2552)-replaces O.E.M. part no. 27-33179-2
- Thermostat Cover Gasket (part no. 18-2553)- replaces O.E.M. part no. 27-47510
- Thermostat Cover Gasket (part no. 18-2554)- replaces O.E.M. part no. 27-41812
- O Ring (part no. 18-7173)- replaces O.E.M. part no. 25-30224.
Order up top-quality replacement parts for bottom dollar today!