Vaico V10-0018 Radiator Cap

Overview

VAICO V10-0018 is a radiator cap for select Audi and Volkswagen applications. It is built around the OE reference 547121321 and is listed for a wide range of cooling-system fitments, including Audi A8 Quattro, Audi A6 Quattro, and Volkswagen Cabriolet applications.

Use this cap when you need a direct replacement for the cooling system’s pressure-sealing component. The blue finish and compact 58 mm profile match the listed specifications for this part number, V10-0018.

Key Features

• Radiator cap for cooling-system service and replacement
• OE reference 547121321 listed for fitment verification
• Blue finish with 58 mm width and 25 mm height
• VAICO part number V10-0018 for catalog matching
• Fits multiple Audi and Volkswagen models across the 1990s and early 2000s

Fitment Details

Compatible with select applications including Fits 2000-2003 Audi A8 Quattro, N/A; Fits 2001-2003 Audi S8, N/A; Fits 1997-1999 Audi A8, N/A; Fits 1997-1999 Audi A8 Quattro, N/A; Fits 1995-1998 Audi A6 Quattro, N/A; Fits 1994-1998 Audi Cabriolet, N/A; Fits 1995-1997 Audi A6, N/A; Fits 1996 Audi A4, N/A; Fits 1996 Audi A4 Quattro, N/A; Fits 1993-1995 Audi 90, N/A; Fits 1990-1991 Audi 90, N/A; Fits 1993-1995 Audi 90 Quattro, N/A; Fits 1990-1991 Audi 90 Quattro, N/A; Fits 1995 Audi S6, N/A; Fits 1990-1994 Audi 100, N/A; Fits 1990-1994 Audi 100 Quattro, N/A; Fits 1992-1994 Audi S4, N/A; Fits 1990-1994 Audi V8 Quattro, N/A; Fits 1990-1993 Volkswagen Cabriolet, N/A; Fits 1990-1992 Audi 80, N/A; Fits 1990-1992 Audi 80 Quattro, N/A; Fits 1990-1991 Audi 200, N/A; Fits 1990-1991 Audi 200 Quattro, N/A; Fits 1990-1991 Audi Coupe Quattro, N/A; Fits 1990 Volkswagen Golf, N/A; Fits 1990 Volkswagen Jetta, N/A.

What It Helps Address

• Loss of cooling-system pressure retention
• Worn or damaged radiator cap sealing surfaces
• Incorrect cap identification during cooling-system repair
• Fitment issues when replacing an OE-numbered cap

Installation Notes

Verify the OE number 547121321 and compare the listed dimensions before installation. Confirm the application against the vehicle’s cooling-system specification, especially on models with chassis or VIN breakpoints noted in the fitment data. Part number V10-0018 should be matched to the catalog listing before service.

Quality Assurance

VAICO catalogs this radiator cap as an aftermarket replacement with OE-number-based fitment guidance. The part number V10-0018 is supported by cross-reference listings for the same application, including Febi-Bilstein 31335.