06K 121 111P – Thermostat w/Water Pump (Supplier Kit)

Description

The 06K 121 111P Water Pump and thermostat assembly is an integrated OE supplier cooling kit designed for select Volkswagen and Audi EA888 2.0T TSI/TFSI engines. Combining the mechanical coolant pump and electronically controlled thermostat into a single housing, this module manages both coolant circulation and temperature regulation simultaneously — enabling rapid engine warm-up, stable operating temperature, and reliable protection against overheating on high-mileage turbocharged engines.

This kit is sourced from an OE-grade supplier, meaning the 06K 121 111P meets the same engineering standards as the original factory assembly. The housing geometry, impeller design, and thermostat calibration are matched to OEM specifications, ensuring direct bolt-on fitment using original hose connections and sensor ports. The kit includes all required O-rings, seals, and hardware for a complete single-service installation.

Signs Your 06K 121 111P Water Pump Needs Replacing

Integrated water pump and thermostat assemblies on EA888 engines are a well-documented failure point as mileage increases. Early warning signs include a coolant smell or pink residue around the pump housing, low coolant warnings, and intermittent overheating. As the condition progresses, stored fault codes related to thermostat performance and visible coolant seepage at the housing seam or sensor ports become common. In some cases, internal impeller degradation causes inadequate coolant flow without any visible external leak, leading to overheating under load. When these symptoms appear, replacing the complete assembly immediately is the safest course of action to protect the engine.

Key Features

• OEM Reference: 06K 121 111P

• OE-grade supplier kit — manufactured to factory engineering specifications

• Integrated water pump and electronically controlled thermostat in one assembly

• OE-matched impeller design for factory-spec coolant flow

• Factory-calibrated thermostat for precise temperature regulation

• Includes all required O-rings, seals, and hardware

• Retains original hose connections and sensor ports

• Direct bolt-on replacement — no modifications required

• Proven solution for EA888 housing leaks, overheating, and thermostat fault codes

Service Notes

Refill with VW/Audi-approved G12++ or G13 coolant and bleed the cooling system thoroughly after installation. Inspect the accessory belt and tensioner during the same service interval. Given the labor involved in accessing this assembly, it is also recommended to inspect nearby plastic coolant fittings and hose connections for signs of heat fatigue and replace as needed.

Compatibility & Applications

Always verify fitment by VIN before ordering. Engine variant and production date may affect compatibility within the same model year; confirm applicability for your specific vehicle before purchase.

Cross Reference Numbers

• 06K 198 111P

• 06K 121 011

• 06K 121 011B

• 06K 121 011C

• 06K 121 111M

• 06K 121 111N

• 06K 121 441

• 06K 121 513B

• 06L 121 005A

• 06L 121 012A

Additional information