06L121131 Engine Coolant Thermostat Housing Adapter For Audi

Part number 06L121131 is a Volkswagen Audi Group (VAG) Engine Coolant Thermostat Housing Adapter, commonly referred to by technicians as the water pump union or oil cooler connecting pipe. It is a small but critical plastic coupling tube that directly bridges the gap to connect the main water pump/thermostat assembly to the engine oil cooler.

Vehicle Compatibility:

• A3 / S3: 2015–Present (8V and 8Y chassis)
• A4 / A4 Allroad / Quattro: 2013–Present (B8 and B9 generations)
• A5 / S5 / Sportback: 2013–Present
• A6 / A7: 2014–Present (including 2.0T versions)
• Q3 / Q5 / Q7: 2014–Present
• TT / TTS: 2015–2023 (Third Generation)
• Golf GTI / Golf R: 2015–Present (MK7 and MK8 chassis)
• Jetta / GLI: 2014–Present
• Tiguan: 2016–Present
• Passat: 2015–Present
• Arteon: 2019–Present
• Atlas / Atlas Cross Sport: 2018–Present (2.0T models only)
• Beetle: 2013–2019 (2.0 TSI models