Genuine 03L121111Q Engine Coolant Thermostat

Engine Coolant Thermostat for Volkswagen Passat

This Genuine engine coolant thermostat, part number 03L121111Q, is a direct-fit cooling system component for select Volkswagen Passat models. It is specified for 2012-2014 Volkswagen Passat 2.0L applications with housing, making it a focused replacement for the factory thermostat assembly.

Key Features

• Genuine OE replacement thermostat for engine cooling control
• Fits 2012-2014 Volkswagen Passat, 2.0L; w/ housing
• Part number 03L121111Q for accurate ordering and lookup
• Built for thermostat and housing service in the cooling system

Detailed Description

Use this Genuine 03L121111Q engine coolant thermostat when servicing the cooling system on a Volkswagen Passat with the 2.0L engine and thermostat housing configuration. The thermostat regulates coolant flow so the engine can reach and maintain proper operating temperature. For buyers searching for a 2012-2014 Volkswagen Passat thermostat with housing or a Genuine 03L121111Q coolant thermostat, this part matches the listed application directly.

What It Helps Address

• Engine running too cool or too hot
• Delayed warm-up after a cold start
• Temperature fluctuation from a worn thermostat
• Cooling system service on a Volkswagen Passat 2.0L
• Replacement of a thermostat assembly with housing

Installation Notes and Tips

Verify engine size and housing configuration before installation. This part is listed for 2012-2014 Volkswagen Passat, 2.0L; w/ housing, so confirm the existing cooling system layout and compare the part number 03L121111Q before ordering. Inspect the thermostat housing, seals, and coolant condition during service, and follow the vehicle manufacturer’s cooling system procedures.

Quality Assurance

Genuine OE-style replacement part identified by part number 03L121111Q for the listed Volkswagen Passat application.