Sierra 18-3676 Thermostat Kit for OMC & VolvoSierra replacement thermostat kit for OMC Stern Drives and Volvo Penta engines. Sierra engine parts are manufactured to meet or exceed OEM requirements. This thermostat kit has a temperature rating of 140F (60C). Temperature Rating: 140F (60C); For: OMC 7.4L (1994-98), 8.2L (1998); For: Volvo 7.4 (All models), 8.2 (All models) 1993-Current; Thermostat Kit Includes: (1) 18-7170 O-Ring; (1) 18-0398 Thermostat Gasket; (1) Thermostat; Interchangeable with: Mallory; 9-403026; OMC Stern Drive; 3853983 + 312797 + 307239; Volvo Penta; 3853983 + 3852071 + 835417;