Vaico V10-0015 Engine Coolant Reservoir

Engine Coolant Reservoir for Volkswagen Applications

This Vaico engine coolant reservoir is a direct-fit replacement for select Volkswagen models that use OE reference 1H0121407A. Built from plastic and supplied with a sensor, it supports coolant expansion and level monitoring in vehicles such as the Volkswagen Golf, Jetta, Cabrio, and Passat.

VAICO focuses on OE-style replacement parts for European vehicles, and the VAICO line is used for applications where factory fit and function matter. Part number V10-0015 is listed for multiple Volkswagen cooling-system applications across the 1995-1999 model years.

• Engine coolant reservoir for Volkswagen cooling system service
• Plastic construction for OE-style replacement fitment
• Includes sensor provision, as specified
• Cross-references OE number 1H0121407A
• Part number V10-0015 for catalog and fitment lookup

Detailed Product Overview

Vaico V10-0015 is an engine coolant reservoir designed for vehicles that require OE-style coolant expansion tank replacement. The housing measures 183 mm in height, 162 mm in length, and 183 mm in width, with a lightweight plastic construction and a listed weight of 0.335 kg. The reservoir is specified with a sensor, making it suitable for applications that monitor coolant level through the tank assembly. This part number V10-0015 is associated with Volkswagen Golf, Jetta, Cabrio, and Passat fitments in the 1995-1999 range.

This part cross-references OE number 1H0121407A for the same application.

Vehicle Fitment

• Fits 1999 Volkswagen Cabrio, N/A. Grade: Aftermarket; To vin 1E-V-999 000; With OE No. 1H0121407A; VAICO
• Fits 1997 Volkswagen Cabrio, N/A. Grade: Aftermarket; To vin 1E-V-999 000; With OE No. 1H0121407A; VAICO
• Fits 1997-1999 Volkswagen Jetta, N/A. Grade: Aftermarket; To vin 1H-V-999 000; With OE No. 1H0121407A; VAICO
• Fits 1997-1998 Volkswagen Golf, N/A. Grade: Aftermarket; To vin 1H-W-000 001; With OE No. 1H0121407A; VAICO
• Fits 1995-1997 Volkswagen Passat, N/A. Grade: Aftermarket; With OE No. 1H0121407A; VAICO
• Fits 1996 Volkswagen Cabrio, N/A. Grade: Aftermarket; To vin 1E-TK030 000; With OE No. 1H0121407A; VAICO
• Fits 1995-1996 Volkswagen Golf, N/A. Grade: Aftermarket; With OE No. 1H0121407A; VAICO
• Fits 1995-1996 Volkswagen Jetta, N/A. Grade: Aftermarket; With OE No. 1H0121407A; VAICO
• Fits 1995 Volkswagen Cabrio, N/A. Grade: Aftermarket; With OE No. 1H0121407A; VAICO

Common Cooling System Issues Addressed

• Cracked or aging coolant reservoir housing
• Coolant level sensor-related reservoir replacement needs
• Loss of coolant from a damaged expansion tank
• OE number 1H0121407A replacement on listed Volkswagen models
• Cooling system service on Volkswagen Golf, Jetta, Cabrio, and Passat

Installation Notes and Tips

Verify the OE number, sensor configuration, and VIN breakpoints before ordering. Compare the reservoir dimensions and mounting layout to the original tank on the vehicle, especially on 1995-1999 Volkswagen Golf, Jetta, Cabrio, and Passat applications. Inspect the coolant level sensor connection and surrounding hoses during installation to confirm the replacement tank matches the existing setup.

Quality Assurance

VAICO is an aftermarket brand focused on European vehicle replacement parts, and this reservoir is cataloged to OE reference 1H0121407A for the listed Volkswagen applications. Confirm fitment by VIN and OE number before installation.