Four Seasons 74937 HVAC Heater Control Valve

Four Seasons 74937 Heater Valve Overview

The Four Seasons 74937 is a rotary electronic heater valve built for HVAC temperature control in select Volkswagen applications. It uses an electric bypass-valve design with a plastic body and two connectors to regulate heater coolant flow for consistent cabin temperature control.

Fits 2011-2017 Volkswagen Touareg, N/A. This Four Seasons heater valve is a direct-fit HVAC temperature control component for Touareg models with electric heater valve operation.

Key Features

• Rotary electronic heater valve for HVAC temperature control
• Electric valve operation with bypass style
• Plastic construction
• 2 connector electrical interface
• Opening size: 0.69 in
• Four Seasons 74937 heater valve for select Volkswagen Touareg applications

Product Details

Four Seasons Heater Valve line components are engineered and tested for dependable operation in mobile air conditioning and heating systems. Part number 74937 is a rotary electronic heater valve that controls coolant flow through the heater circuit, helping the HVAC system deliver the requested cabin temperature. It is listed for 2011-2017 Volkswagen Touareg models with electric heater valve operation. This part cross-references Gates EHV132 for the same application.

Common Issues This Part May Address

• Inconsistent cabin heat output
• Heater core flow control problems
• HVAC temperature changes that do not respond correctly
• Electric heater valve malfunction codes related to coolant flow control
• Loss of heat due to a stuck bypass valve

Installation Notes

Verify connector style, valve operation type, and opening size before installation. Confirm the vehicle is a 2011-2017 Volkswagen Touareg with electric heater valve configuration. Inspect the HVAC coolant circuit for contamination or restricted flow before replacing the valve, and follow the vehicle service procedure for coolant handling and system bleeding.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation, backed by more than 50 years of mobile A/C experience. The 74937 heater valve is built to meet the demands of HVAC temperature control service in the Volkswagen Touareg platform.