Product Description: High-Performance Coolant Thermostat Housing Assembly Enhance your vehicle's engine efficiency and reliability with our Coolant Thermostat Housing Assembly. Specifically designed for the EA111 engine, this assembly is essential for maintaining optimal engine temperatures and ensuring smooth vehicle operation. Applicable Model: This thermostat housing assembly is a replacement specifically for the EA111 engine. To ensure compatibility, please confirm that your vehicle model matches before making a purchase. OE Number: For precise fitment, reference the following part numbers: 03C121111AM, 03C121111T, 03C121111B, and 03C121111AK. Verify that these numbers match your original equipment to ensure a perfect fit. Improved Efficiency: Our thermostat housing assembly enhances your vehicle's efficiency by accurately regulating coolant flow. This precise control helps maintain the optimal engine temperature for improved performance and longevity. Sturdy Material: Constructed from high-quality, robust plastics, this housing assembly is designed to withstand extreme temperatures and pressures. Its durable construction ensures long-lasting performance and reliability under demanding conditions. Easy Installation: Designed for straightforward installation, this thermostat housing assembly saves you time and effort. It is an ideal choice for both professional mechanics and DIY enthusiasts looking to improve their vehicle's cooling system with ease. Upgrade your vehicle's cooling system with our Coolant Thermostat Housing Assembly. Offering improved efficiency and durability, it is the perfect solution for maintaining engine performance and reliability.