Genuine 1K0121109AK Coolant Expansion Tank Hose Lower 2.0T TSI

The Genuine 1K0121109AK is a lower coolant expansion tank hose designed for 2.0T TSI engines that runs from the coolant reservoir to the connecting pipe. This coolant hose feeds coolant back to the overflow or recovery bottle in a closed-loop cooling system, playing a critical role in maintaining proper engine temperature and cooling system pressure.

Key Features:

• Genuine OEM part manufactured to Volkswagen/Audi factory specifications
• Designed specifically for TSI engine applications
• Direct replacement for original equipment coolant expansion tank hose
• Engineered to withstand high coolant temperatures and pressures
• Ensures reliable connection between expansion tank and cooling system

If your hoses are cracked or brittle, replace them before costly failures occur. Regular inspection and replacement of coolant hoses is essential for preventing coolant leaks, overheating, and potential engine damage. This genuine replacement part ensures proper fit and function in your vehicle's cooling system.

OEM Part Number: 1K0121109AK (also formatted as 1K0-121-109-AK)