Thermostat & Water Pump Kit – 06L 198 111H/I (INA/OE)

Description

The 06L 198 111H Water Pump and thermostat kit is an integrated OE-quality cooling assembly manufactured by INA for select Volkswagen and Audi EA888 1.8T and 2.0T TSI/TFSI engines. Combining the water pump and electronically controlled thermostat housing into a single assembly, this kit 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.

INA is a globally trusted OE-quality cooling system supplier within the Schaeffler Group, with direct experience supplying thermal management components to European automakers. The 06L 198 111H is engineered to meet factory specifications in fit, sealing, and durability. The reinforced composite housing resists heat cycling and deformation, while factory hose connections and sensor ports ensure a direct bolt-on installation. The kit includes the integrated housing, gasket set, and all required hardware for a complete single-service repair.

Signs Your 06L 198 111H 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 coolant seepage or pink residue around the housing seam or hose connections, low coolant warnings, and intermittent overheating. A stuck or sluggish thermostat will trigger stored fault codes related to temperature regulation and can cause the engine to run outside its optimal thermal range. In some cases, internal impeller wear 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: 06L 198 111H / 06L 198 111I

• Brand: INA — globally trusted OE-quality cooling system supplier

• Integrated water pump and thermostat housing in one assembly

• Reinforced composite housing resists heat cycling and deformation

• Factory-calibrated thermostat for precise temperature regulation

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

• Includes integrated housing, gasket set, and all required hardware

• Retains original hose connections and sensor ports

• Direct bolt-on replacement — no modifications required

• Complete kit eliminates the risk of secondary leaks

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

• 06L 121 111H

• 06L 121 111J

• 06L 121 111L

• 06L 121 111M

• 06L 121 111P

• 538 0360 10

Additional information