Vaico V10-0491 Radiator Cap

Radiator Cap for Audi Cooling Systems

The VAICO V10-0491 radiator cap is an aftermarket replacement for select Audi cooling systems that use an expansion tank. Built to match the listed application requirements, it supports proper pressure control in the cooling circuit for Audi A4, A6, A8, S4, S6, S8, and Allroad Quattro models.

VAICO V10-0491 is a practical choice when replacing a worn or leaking radiator cap on Audi A6 Quattro and related applications. The part number V10-0491 is also referenced by cross-listed OE-style applications for the same fitment family.

Key Features

• Radiator cap for expansion tank applications
• Aftermarket replacement from VAICO / VAICO
• Dimensions: 90 mm height, 171 mm length, 200 mm width
• Packaged weight: 0.211 kg
• Fits a wide range of Audi cooling system applications from 2002-2012
• Cross-references Febi-Bilstein 40723 and Gates 31529 for the same application

Detailed Description

This VAICO radiator cap, part number V10-0491, is specified for Audi vehicles equipped with an expansion tank. It is listed for 2002-2012 Audi A6 Quattro, 2012 Audi A7 Quattro, 2006-2011 Audi A6, 2002-2004 Audi A6, 2007-2011 Audi S6, 2004-2010 Audi A8 Quattro, 2007-2009 Audi S8, 2002-2006 Audi A4, 2002-2006 Audi A4 Quattro, 2004-2006 Audi S4, and 2002 Audi Allroad Quattro. If you are searching for a radiator cap for Audi A6 Quattro or Audi A4 Quattro cooling system service, V10-0491 is the listed replacement part.

VAICO’s VAICO line is used for aftermarket replacement parts that follow the application data provided for European vehicles. For buyers comparing Audi radiator cap part number V10-0491 against OE-style references, this unit aligns with the listed expansion tank fitment and cooling-system dimensions.

What It Helps Address

• Coolant loss from a worn or failing cap seal
• Pressure retention issues in the expansion tank system
• Cooling system warning symptoms related to cap wear
• Routine replacement during Audi cooling system service
• Fitment matching for Audi radiator cap replacement searches

Installation Notes and Tips

Confirm the vehicle uses an expansion tank style cooling system before ordering. Compare the existing cap and part number V10-0491 to the vehicle’s original specification, and verify the listed Audi model and year range before installation. A proper seal and correct cap fit are important for maintaining cooling system pressure.

Quality Assurance

VAICO supplies aftermarket replacement components for European vehicle applications, and this radiator cap is cataloged with direct fitment data for the listed Audi models. Cross-reference numbers include Febi-Bilstein 40723 and Gates 31529.