URO 03L121111AC Thermostat Housing Assembly

The URO 03L121111AC is a complete thermostat housing assembly designed as a direct replacement for Volkswagen and Audi 2.0L TDI diesel engines. This essential cooling system component regulates engine coolant flow to maintain optimal operating temperatures, ensuring efficient engine performance and preventing overheating.

Key Features:

• Complete assembly includes thermostat housing, thermostat element, temperature sensor ports, and gasket
• Opening temperature: 87°C-102°C (189°F-216°F) for precise coolant regulation
• Manufactured to factory housing dimensions for direct bolt-on installation
• High-quality alloy or composite material construction resists warping and cracking
• Temperature-stable materials prevent coolant leakage under extreme conditions
• Includes temperature sensor ports where applicable for proper engine monitoring
• ISO/IATF 16949 QMS certified manufacturing ensures consistent quality

The thermostat remains closed during engine warm-up to accelerate the heating process, then opens to allow coolant circulation once optimal temperature is reached. This complete assembly eliminates the need to purchase individual components separately. URO Parts offers quality aftermarket alternatives to dealer pricing while maintaining OEM specifications and fitment standards.

OEM Cross-Reference: Supersedes 03L-121-111-AC, 03L121111AM, 03L121111M