Four Seasons 74933 Rotary Electronic HVAC Heater Control Valve

The Four Seasons 74933 is a rotary electronic HVAC heater control valve, also called a heater valve. It regulates the flow of engine coolant to the heater core, which helps control cabin heating.

Key Features:

• Rotary electronic design with electric valve operation
• Bypass style
• Plastic construction
• 3 connectors
• Temperature tested to 270 degrees F
• Pressure tested for a leak-free design
• Application-specific design

This heater control valve is a replacement part for vehicles that use an electronically controlled heater valve.