Sierra® Thermostat Kit for Mercruiser® 140 - 3.0L Engines, 1968 - 1989

Item # WX2-167154

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Compare at $19.99 Non-Member $16.99 Buyer's Club $15.29

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Sierra® Thermostat Kit for Mercruiser® 140 / 3.0L Engines, 1968 - 1989

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. 18-3650) includes thermostat and gasket to replace your original thermostat kit (O.E.M. 59078Q3).

Kit includes:
  • Thermostat (part no. 18-3550)- replaces O.E.M. part no. 59078
  • Thermostat gasket (part no. 2831)-replaced O.E.M. part no. 27-47590-1.
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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.

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Please Note:  Once items have contained gas, kerosene, butane, diesel, or oil they cannot be returned to The Sportsman's Guide.

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