Four Seasons 74927 HVAC Heater Control Valve

Overview of Four Seasons Heater Valve 74927

The Four Seasons Heater Valve 74927 is an electric valve designed to regulate coolant flow in your vehicle's heating system. Engineered with thermoplastic and steel materials, this solenoid valve with an auxiliary coolant pump ensures precise temperature control for select Mercedes-Benz models.

• Electric heater valve with solenoid and auxiliary coolant pump
• Constructed from durable thermoplastic and steel
• Features 4 connectors and 3 terminal pins for reliable electrical connections
• Non-bypass style valve for efficient coolant flow management
• Multiple inlet/outlet openings sized approximately 0.69 to 0.7 inches (17.83 mm)

Detailed Product Description

The Four Seasons Heater Valve 74927 belongs to the Heater Valve product line, which focuses on precise temperature control components for automotive HVAC systems. This particular valve operates electrically, allowing for controlled coolant flow through the heater core. Its non-bypass design ensures that coolant is directed efficiently without unnecessary circulation, improving heating system responsiveness. The valve is constructed from a combination of thermoplastic and steel, providing durability and resistance to heat and corrosion. It includes four connectors and three terminal pins, facilitating secure and stable electrical connections. The openings measure approximately 0.69 to 0.7 inches (17.83 mm), compatible with the coolant hoses of specific Mercedes-Benz vehicles.

Compatible Vehicles and Applications

This heater valve is compatible with a range of Mercedes-Benz models, including the CL55 AMG, CL65 AMG, CL500, CL600, S55 AMG, S63 AMG, S65 AMG, S350, S430, S500, S550, and S600. It is designed to replace faulty or worn heater valves in these vehicles, restoring proper HVAC function and cabin heating performance.

• Resolves heater core overheating or insufficient heating issues
• Fixes coolant leaks related to valve failure
• Eliminates erratic or no heat delivery inside the cabin
• Addresses electrical valve malfunction symptoms
• Improves overall HVAC temperature regulation

Installation Notes and Tips

When installing the Four Seasons Heater Valve 74927, ensure the vehicle is cooled down to avoid burns from hot coolant. Verify the correct orientation of the valve and confirm all electrical connectors are securely attached. Check hose connections for proper fitment to the 0.69 to 0.7 inch openings. It is recommended to inspect the surrounding HVAC components for wear or damage during installation.

Quality Assurance and Warranty

Four Seasons manufactures the Heater Valve 74927 to meet or exceed OEM standards for fit, form, and function. The combination of thermoplastic and steel materials ensures durability under typical operating conditions. While specific warranty details are not provided here, Four Seasons products generally come with a limited warranty against defects in material and workmanship.