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Sierra® Thermostat Kit for Mercruiser® 230, 250, and 260 HP Engines, 1977-1987.
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. Thermostat Kit (part no. 18-3646) replaces O.E.M. thermostat kit no. 807252Q3.Kit contains:
- Thermostat (part no. 18-3551)- replaces O.E.M. part no. 59137
- Thermostat Housing Gasket (part no. 18-2917)- replaces O.E.M. part nos. 27-53045-1, 27-33918
- Thermostat Cover Gasket (part no. 18-2844)-replaces O.E.M. part no. 27-48818-1
- Thermostat Cover Gasket (part no. 18-2553)- replaces O.E.M. part no. 27-47510
- Thermostat Cover Gasket (part no. 18-2834)-replaces O.E.M. part no. 27-60208.
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