Genuine 1KM122109C Engine Coolant Reservoir Hose - Lower

OE Lower Coolant Reservoir Hose for Volkswagen

This Genuine engine coolant reservoir hose is a direct-fit cooling system replacement for select Volkswagen models. It is built for the lower hose position and supports proper coolant routing in the reservoir circuit on compatible Golf, Beetle, and Jetta applications.

• Genuine OE replacement part: 1KM122109C
• Engine coolant reservoir hose for the lower position
• Fits 2010-2014 Volkswagen Golf, Lower
• Fits 2006-2010 Volkswagen Beetle, Lower
• Fits 2005-2010 Volkswagen Jetta, Lower
• Part number 1KM122109C for application matching

Detailed Product Information

Part number 1KM122109C is an OE-style engine coolant reservoir hose made for Volkswagen cooling system service. It is used in the lower hose location to connect the coolant reservoir circuit and maintain proper coolant flow in the vehicle’s cooling system. This Genuine hose is listed for 2010-2014 Volkswagen Golf, 2006-2010 Volkswagen Beetle, and 2005-2010 Volkswagen Jetta, all in the lower position. If you are replacing a worn Volkswagen Golf lower coolant reservoir hose or sourcing a Volkswagen Jetta lower reservoir hose, 1KM122109C provides the correct fitment reference.

Common Issues This Part Can Address

• Cracked or split coolant hose material
• Coolant seepage at the reservoir hose connection
• Softening, swelling, or hardening from heat cycling
• Restricted coolant transfer in the reservoir circuit
• Loss of proper hose sealing at the lower connection point

Installation Notes and Tips

Verify the lower hose routing and connector style against the original part before installation. Inspect adjacent coolant fittings, clamps, and reservoir necks for wear or residue before reassembly. After installation, refill and bleed the cooling system according to Volkswagen service procedures and check for leaks at operating temperature.

Quality Assurance

Genuine OE replacement part 1KM122109C is cataloged for the listed Volkswagen applications to support accurate fitment selection.