Vaico V20-1684 Engine Coolant Hose

Engine Coolant Hose for BMW Cooling Service

Vaico V20-1684 is an engine coolant hose that routes coolant from the water pump to the connecting pipe. Built to match OE number 17 12 7 508 042, it is a direct-fit aftermarket cooling hose for BMW V12 cooling system service.

Compatible with BMW 760Li and BMW 760i applications from the listed model years, this hose supports proper coolant transfer in the engine bay. The VAICO product line focuses on OE-style replacement parts for European vehicles, making V20-1684 a practical choice when replacing a worn or leaking coolant hose.

Key Features

• Engine coolant hose for the cooling system
• Routes coolant from water pump to connecting pipe
• Matches OE number 17 12 7 508 042
• Length: 305 mm
• Height: 40 mm
• Width: 100 mm
• Lightweight aftermarket replacement at 0.130 kg
• Vaico part number V20-1684

Detailed Description

Vaico V20-1684 is specified as a cooling hose from the water pump to the connecting pipe, with dimensions of 305 mm in length, 40 mm in height, and 100 mm in width. It is referenced to OE number 17 12 7 508 042 and cross-references part numbers 7 508 042 and 17 12 7 508 042 for the same application. For BMW cooling system repair, this hose is intended for vehicles that require the listed OE-style routing and fitment.

Fits 2004-2008 BMW 760Li, N/A. Fits 2004-2006 BMW 760i, N/A. Search terms such as BMW 760Li coolant hose from water pump to connecting pipe and BMW 760i engine coolant hose replacement align with this application. Vaico V20-1684 is also a relevant search phrase for buyers sourcing the correct BMW cooling hose by part number.

Common Replacement Reasons

• Coolant seepage at the hose connection
• Cracking or hardening from heat cycling
• Loss of coolant flow between the water pump and pipe
• Visible swelling, wear, or deterioration in the hose body
• Service replacement during BMW cooling system repair

Installation Notes and Tips

Verify OE number 17 12 7 508 042 and compare the hose routing, length, and connection points before installation. Drain the cooling system as needed, inspect adjoining pipes and seals for wear, and confirm the hose seats fully at both ends before refilling and bleeding the system according to BMW service procedures.

Quality Assurance

Vaico supplies OE-style replacement parts for European vehicle applications, and this hose is cataloged to the specified BMW OE reference for fitment verification. Confirm the part number V20-1684 against the vehicle identification and cooling system layout before ordering.