Four Seasons 74931 HVAC Heater Control Valve

Reliable Electronic Heater Valve for BMW, Chrysler, and Mini Models

The Four Seasons Heater Valve 74931 is a single solenoid electronic heater valve designed to regulate coolant flow efficiently in select BMW, Chrysler, and Mini vehicles. Engineered with durable thermoplastic and steel materials, this electric bypass valve ensures precise temperature control for your HVAC system.

Key Features of Four Seasons Heater Valve 74931

• Single solenoid electronic heater valve for accurate operation
• Constructed from thermoplastic and steel for durability
• Equipped with 3 connectors and 2 terminal pins for secure electrical connections
• Bypass style valve designed for efficient coolant flow management
• Precise opening dimensions: 0.78-0.8 inches (19.89-20.32 mm) for optimal fit
• Compatible with multiple BMW, Chrysler, and Mini models

Detailed Description of the Heater Valve Product Line

The Four Seasons Heater Valve product line focuses on HVAC heater control valves that regulate the flow of coolant to the heater core. The 74931 model is an electric valve featuring a single solenoid design, which allows for reliable and responsive temperature control within the vehicle’s heating system. Its bypass style helps maintain proper coolant circulation, contributing to consistent cabin comfort. The combination of thermoplastic and steel materials provides resistance to corrosion and wear, extending the valve’s service life.

Applications and Common Issues Addressed

• Restores proper heater core coolant flow in BMW 330i, 530e, and 740i xDrive models
• Resolves inconsistent cabin heating in Chrysler Pacifica and Voyager vehicles
• Replaces faulty heater valves in Mini Cooper Countryman and i8 for improved HVAC performance
• Eliminates heater control valve leaks and electrical operation failures
• Supports efficient HVAC temperature regulation in hybrid and conventional engine configurations

Installation Notes and Tips

When installing the Four Seasons Heater Valve 74931, ensure the vehicle’s cooling system is depressurized and cooled to avoid injury. Verify the valve’s orientation and connector alignment to match the original part. The 3 connectors and 2 terminal pins require secure electrical connections for proper valve operation. It is recommended to inspect related hoses and clamps for wear during replacement to maintain system integrity.

Quality Assurance and Warranty

Four Seasons manufactures the Heater Valve 74931 to meet or exceed OEM specifications, ensuring reliable performance in BMW, Chrysler, and Mini vehicles. The use of thermoplastic and steel materials enhances 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.