Vaico V20-1703 HVAC Heater Hose

BMW X5 Heater Hose Overview

Vaico V20-1703 is an HVAC heater hose assembly for the BMW X5, built for 2001-2006 applications. It routes coolant from the neck to the expansion tank and matches OE number 64 21 8 380 127 for direct replacement planning.

Key Features

• HVAC heater hose / cooling hose for BMW X5 applications
• Routes coolant from the neck to the expansion tank
• Length: 710 mm; width: 200 mm; height: 80 mm
• OE reference: 64 21 8 380 127
• Vaico part number V20-1703 for catalog and fitment lookup

Detailed Product Description

VAICO V20-1703 is a replacement cooling hose for the BMW X5, covering 2001-2006 model years. This hose is specified for the connection from the neck to the expansion tank, making it a direct-fit service part for cooling system routing on the X5. The listed dimensions, including 710 mm length, help confirm the correct hose profile during parts matching. VAICO V20-1703 also cross-references OE number 64 21 8 380 127, which is useful when verifying the correct BMW X5 heater hose before ordering.

VAICO is the brand line used here for this specific replacement hose application, and V20-1703 is the catalog number to reference when searching for a BMW X5 cooling hose or heater hose replacement by OE number.

What This Part Helps Address

• Cracked or aged coolant hose material
• Coolant leaks at the neck-to-expansion-tank connection
• Restricted coolant transfer through a damaged hose
• Incorrect hose routing during cooling system repair
• OE number matching for BMW X5 cooling system service

Installation Notes and Tips

Verify the OE number 64 21 8 380 127 and compare the hose length and connection routing before installation. Confirm the vehicle is a 2001-2006 BMW X5 and inspect adjoining cooling system components for wear, seepage, or hardened seals before replacing the hose. Proper fitment checks are important on BMW X5 cooling system repairs where hose routing must match the original layout.

Quality Assurance

VAICO replacement parts are cataloged for OE-number-based identification, and V20-1703 is listed against the BMW X5 application shown above. Use the OE reference and vehicle fitment details to confirm the correct part before installation.