Genuine OEM Volkswagen Engine Thermostat Housing, part number 03C121111P. This critical component is part of the engine cooling system, designed to enclose the thermostat and precisely regulate the flow of coolant throughout the engine. It features multiple integrated hose connections for various coolant lines. Constructed from durable, heat-resistant plastic, it weighs approximately 658 grams and measures 27 cm long, 13 cm wide, and 12 cm high. Choosing a genuine OEM thermostat housing ensures proper sealing, accurate temperature control, and resistance to thermal cycling, which are vital for engine longevity and efficiency.

Catalogue entry: HOUSING.