Vaico V10-3030 HVAC Heater Control Valve

HVAC Heater Control Valve for Audi Applications

The Vaico V10-3030 HVAC heater control valve regulates coolant flow through the heater circuit to help maintain stable cabin heat. Built as a manual thermostat valve, it is a direct-fit style replacement for select Audi models from the early 1990s through the late 1990s, including Audi 100, Audi A6, Audi S4, Audi S6, and Audi V8 Quattro applications.

VAICO focuses on OE-style replacement components for European vehicles, and this VAICO heater control valve is sized for the specified HVAC housing dimensions and manual operating setup. The V10-3030 part number is also referenced for interchange with 4A0 819 809.

Key Features

• Manual HVAC heater control valve for coolant flow regulation
• Thermostat valve design for heater circuit temperature control
• Dimensions: 64 mm height, 98 mm length, 91 mm width
• Lightweight construction at 0.100 kg
• Fits select Audi A6, Audi A6 Quattro, Audi 100, Audi 100 Quattro, Audi S4, Audi S6, and Audi V8 Quattro models
• VAICO V10-3030 part number for catalog and service matching

Detailed Description

The Vaico V10-3030 HVAC heater control valve is a manual thermostat valve used in the heater circuit to manage coolant routing through the heat exchanger. On compatible Audi platforms, this valve helps control how much hot coolant reaches the heater core, which directly affects cabin temperature output. The compact housing dimensions and OE-style application focus make it a practical replacement for service work on Audi 100, Audi A6, Audi S4, Audi S6, and Audi V8 Quattro heating systems.

This part cross-references 4A0 819 809 for the same application. Search terms such as Audi A6 heater control valve, Audi 100 HVAC thermostat valve, and VAICO V10-3030 heater valve apply to this replacement component.

Vehicle Fitment

• Fits 1995-1997 Audi A6, N/A. Grade: Aftermarket; Description: Heat Exchanger; VAICO
• Fits 1995-1997 Audi A6 Quattro, N/A. Grade: Aftermarket; Description: Heat Exchanger; VAICO
• Fits 1995 Audi S6, N/A. Grade: Aftermarket; Description: Heat Exchanger; VAICO
• Fits 1992-1994 Audi 100, N/A. Grade: Aftermarket; Description: Heat Exchanger; VAICO
• Fits 1992-1994 Audi 100 Quattro, N/A. Grade: Aftermarket; Description: Heat Exchanger; VAICO
• Fits 1992-1994 Audi S4, N/A. Grade: Aftermarket; Description: Heat Exchanger; VAICO
• Fits 1992-1994 Audi V8 Quattro, N/A. Grade: Aftermarket; Description: Heat Exchanger; VAICO
• Fits 1990-1991 Audi V8 Quattro, N/A. Grade: Aftermarket; Description: Heat Exchanger; From Chassis/VIN 4CM003559; VAICO

Common Issues This Part May Address

• Weak or inconsistent cabin heat
• Heater output that stays hot when temperature control is set lower
• Coolant flow problems through the heater circuit
• Temperature regulation issues in the HVAC system
• Replacement needs for a worn or sticking heater control valve

Installation Notes and Tips

Verify the valve dimensions, operating mode, and vehicle application before installation. Confirm the Audi model, year, and any chassis/VIN notes, especially for 1990-1991 Audi V8 Quattro applications listed from chassis/VIN 4CM003559. Inspect heater hoses, clamps, and coolant condition during service so the new valve can operate correctly in the HVAC system.

Quality Assurance

VAICO supplies OE-style replacement parts for European vehicle service, and the V10-3030 is cataloged for the specified Audi heater control valve applications. Confirm fitment against the vehicle listing and interchange reference before ordering.