Vaico V20-1780 Radiator Coolant Hose - Lower or Upper

Radiator Coolant Hose for BMW Applications

The Vaico V20-1780 radiator coolant hose is a direct-fit cooling system replacement for select BMW models with upper and lower hose applications. Built to match the listed dimensions and vehicle fitment, it supports proper coolant routing in the engine bay for 2007-2013 BMW 128i, 328i, 328i xDrive, 328xi, and Z4 applications.

VAICO product line components are developed for European vehicle service needs, with attention to OE-style fit and application-specific sizing. The V20-1780 follows that approach with defined length, height, and width measurements for accurate replacement selection.

Key Features

• Brand: Vaico / VAICO
• Part number: V20-1780
• Radiator coolant hose for cooling system service
• Dimensions: 260 mm length, 120 mm height, 110 mm width
• Packaging size: 26 cm depth, 12 cm height, 11 cm width
• Weight: 0.290 kg
• Fits upper and lower hose positions depending on application

Detailed Description

Use the Vaico V20-1780 when replacing a radiator coolant hose on supported BMW models. This hose is listed for 2007-2013 BMW 128i, 328i, 328i xDrive, 328xi, and Z4 applications, with upper and lower position coverage depending on the vehicle and configuration. The part number V20-1780 is also referenced by Continental 66899 and Gates 23421 for the same application.

For buyers searching for a BMW 328i radiator coolant hose, BMW 128i cooling hose, or a BMW Z4 upper coolant hose replacement, this part provides a fitment-specific option with published dimensions for easier matching during service.

What It Helps Address

• Coolant leaks from a cracked or aged radiator hose
• Softening, swelling, or collapse of the existing hose
• Restricted coolant flow caused by internal hose deterioration
• Overheating concerns linked to a compromised cooling circuit
• Service replacement during BMW cooling system maintenance

Installation Notes and Tips

Confirm the hose position before ordering, since fitment includes both upper and lower applications across the listed BMW models. Compare the existing hose routing, connection points, and dimensions to the published measurements: 260 mm length, 120 mm height, and 110 mm width. Inspect adjoining clamps, fittings, and coolant condition during replacement, and verify the cooling system is properly refilled and bled after installation.

Quality Assurance

Vaico and VAICO are established names in European replacement parts, and this hose is cataloged with OE-style interchange references for application matching. Cross-reference part numbers include Continental 66899 and Gates 23421.