Four Seasons 74924 HVAC Heater Control Valve

BMW Heater Valve Replacement

Four Seasons 74924 is a single solenoid electronic heater valve for BMW heating system service. It uses a non-bypass, electric valve design with a thermoplastic and steel construction, two connectors, and a 2-pin terminal layout for direct HVAC temperature control replacement.

Key Features

• Single solenoid electronic heater valve
• Electric valve operation with non-bypass design
• Thermoplastic / steel construction
• 2 connectors with 2 terminal pins
• Opening size: 0.79 in. / 19.94 mm
• Four Seasons Heater Valve line, Part Number 74924

Product Details

Four Seasons 74924 is built for HVAC temperature control service where precise coolant flow regulation is required. As a heater control valve, it helps manage heat output through the vehicle’s heating system by opening and closing electronically through a single solenoid. This part is listed for 1995-1996 BMW 318ti and 1996-2000 BMW Z3 applications, making it a direct-fit option for BMW heater valve replacement needs. This part cross-references Gates EHV109 for the same application.

Common Problems It Can Address

• No heat from the cabin vents
• Heat stuck on or unable to regulate temperature
• Coolant flow control issues in the heater circuit
• Electrical failure at the heater valve connector
• Intermittent HVAC temperature output

Installation Notes

Verify connector style, terminal count, and valve orientation before installation. Confirm the opening size and non-bypass configuration match the original BMW heater valve being replaced. For best results, inspect the surrounding coolant hoses and electrical connections during service.

Quality Assurance

Four Seasons states that its HVAC components are engineered and tested for long service life, drawing on more than 50 years of mobile air conditioning experience. The brand positions this heater valve line as a repair-focused replacement for dependable operation.