Sierra 18-3662 Marine Engine Thermostat Kit

The Sierra 18-3662 is a complete marine thermostat kit designed for Volvo Penta stern drive engines. This premium-quality replacement kit is engineered to maintain optimal engine operating temperature and restore proper cooling system function.

Key Features:

• 145°F (63°C) temperature rating for precise thermal control
• Complete kit includes thermostat, gaskets, seal, and O-ring for out-of-the-box installation
• Engineered to meet or exceed OEM specifications
• Direct replacement for Volvo Penta part numbers 875794-0 and 876305-4
• Also replaces Mallory 9-43004 and GLM 13381
• Built to withstand harsh marine environments

A failed thermostat can cause your engine to run outside its optimal temperature range, leading to reduced performance and efficiency. Sierra simplifies maintenance by packaging all necessary components together, ensuring proper fit and reliable operation. Designed specifically for Volvo Penta applications, this kit restores cooling system function to factory specifications.