Applicable models: Sierra 18-2778 Marine Thermostat Housing fits Volvo Penta stern drive models with power trim Warranty coverage: All Sierra parts, including 18-2778 Water Hose Connection, are covered under Sierra's customer satisfaction warranty Package quantity: Product is sold as a single unit Interchangeable compatibility: Compatible with GLM 23010, Mallory 9-44003, and Volvo Penta 832846 Performance: Designed to meet or exceed the performance of original equipment parts