06L121111P - Thermostat Housing - EA888.3 MQB/MLB - 1.8 TSI & 2.0 TSI - Volkswagen & Audi

06L121111P – Thermostat Housing | EA888.3 – Volkswagen & Audi 1.8 TSI / 2.0 TSI (MQB & MLB Platforms)

The 06L121111P thermostat housing is the latest genuine Volkswagen/Audi revision for vehicles equipped with EA888.3 1.8 TSI and 2.0 TSI engines and electric water pumps. This is the most up-to-date and durable version, superseding several older, failure-prone part numbers. A known weak point on these engines, this component is commonly replaced together with the water pump to prevent sequential failures.

If your vehicle is overheating, leaking coolant, or throwing thermostat-related codes, this OEM unit is the solution. Don’t risk replacing just one component—professional mechanics recommend replacing the full assembly (thermostat, water pump, and union) to ensure long-term reliability.

Key Features:

• Genuine OEM Volkswagen/Audi part

• Latest revision with improved materials and updated design

• Designed for EA888.3 MQB & MLB 1.8T/2.0T engines with electric water pumps

• Recommended to replace as part of a full thermostat/water pump service kit

• Comes ready to install (thermostat sensor, gasket preinstalled)

Fitment Includes:

Popular Models (2013–2020):

• Volkswagen – Golf MK7 GTI & R, Tiguan MQB, Passat MQB, Arteon

• Audi – S3 8V, TT/TTS MK3, A3 8V, A4 B8.5/B9, A5 B9, Q5 B8.5/B9

• Skoda – Octavia MK3, Superb, Kodiaq, Karoq

• SEAT – Leon 5F/KL, Ateca, Tarraco

Supersedes Previous Revisions:

06L121111F, 06L121111G, 06L121111H, 06L121111J, 06L121111K, 06L121111L, 06L121111M, 06L121600D

Why Replace the Whole Kit?

Coolant leaks often occur from both the thermostat housing and water pump—sometimes days or weeks apart. To avoid repeat labour and workshop costs, most skilled European mechanics replace the entire system at once. This includes:

• Thermostat Housing (06L121111P)

• Electric Water Pump

• Water Pump Union Seal (06L121131C)

• Gasket (06L121139A)

We recommend our Thermostat & Water Pump Full Bundle for a complete, reliable solution.

SKU:  06L121111P