Vaico V20-1377 Radiator Drain Plug

Radiator Drain Plug for BMW Cooling Service

The Vaico V20-1377 radiator drain plug is a blue plastic replacement part for BMW cooling system service. It is specified for vehicles using OE reference 17111707818 and is listed for a wide range of BMW 3 Series, X3, X5, and Z4 applications.

VAICO product line parts are built as aftermarket OE-style replacements for maintenance and repair work where the original drain plug has worn, cracked, or no longer seals correctly. The V20-1377 follows the listed OE cross-reference and dimensions for a direct service replacement.

Key Features

• Brand: Vaico / VAICO
• Part number: V20-1377
• Radiator drain plug for BMW cooling system service
• Blue plastic construction
• Dimensions: 45 mm height, 15 mm length, 15 mm width
• OE reference: 17111707818
• Cross-reference part numbers: 1 707 818, 17 11 1 707 818

Detailed Description

Use the Vaico V20-1377 when replacing a radiator drain plug on BMW models that call for OE number 17111707818. This radiator drain plug is listed for BMW X3 2004-2010, Z4 2003-2008, 325Ci 2001-2006, 330Ci 2001-2006, X5 2001-2006, 325i 2001-2005, 325xi 2001-2005, 330i 2001-2005, 320i 2001-2004, 330xi 2001-2004, 323Ci 2000, 323i 1997-2000, 328Ci 2000, and 328i 1997-2000. This part cross-references 1 707 818 and 17 11 1 707 818 for the same application.

What It Helps Address

• Coolant leakage at the radiator drain point
• Cracked or brittle plastic drain plug failure
• Difficulty draining coolant during service
• Improper sealing after radiator maintenance
• Replacement of a missing or damaged OE-style drain plug

Installation Notes and Tips

Confirm OE number 17111707818 before ordering. Match the plug dimensions and radiator drain location to the vehicle application. Inspect the surrounding radiator fitting for wear, debris, or thread damage before installation, and verify a proper seal after refilling the cooling system.

Quality Assurance

VAICO aftermarket parts are cataloged as OE-reference replacements for specified BMW applications. This listing is tied to the stated OE number and fitment data for the V20-1377.