Four Seasons 74934 HVAC Heater Control Valve

Four Seasons 74934 Heater Valve Overview

The Four Seasons 74934 heater valve is a single solenoid electronic heater valve built for precise coolant flow control in the HVAC system. It uses a bypass-style electric valve design with thermoplastic and steel construction for dependable operation in temperature control applications.

Compatible with 2013-2018 Ford C-Max heater valve applications, this part number 74934 is a direct-fit option for drivers addressing heater control concerns on the Ford C-Max platform. Four Seasons backs this heater valve line with more than 50 years of mobile A/C experience and product testing focused on long-term operation.

Key Features

• Single solenoid electronic heater valve for HVAC temperature control
• Electric valve operation with bypass style flow management
• Thermoplastic / steel construction for durability in engine bay conditions
• 3 connectors and 2 terminal pins for vehicle-specific electrical integration
• Opening dimensions: 0.64 in (16.18 mm), 0.71 in (18.14 mm), and 0.71 in (18.03 mm)
• Four Seasons heater valve part number 74934

Detailed Description

Four Seasons Heater Valve 74934 is engineered as an HVAC heater control valve for regulating coolant flow through the heater circuit. The single solenoid electronic design supports controlled valve movement, while the bypass configuration helps manage heater core flow within the vehicle’s temperature control system. This part is built for 2013-2018 Ford C-Max heater valve service and is also referenced by cross numbers such as Dorman - HELP 74934 and Gates EHV131 for the same application.

The Four Seasons heater valve product line focuses on replacement components tested for consistent operation in mobile air conditioning and heating systems. If you are searching for a Ford C-Max heater control valve, heater valve replacement, or Four Seasons 74934 HVAC component, this part provides a fitment-specific solution for the listed vehicle range.

Common Issues This Part May Address

• Inconsistent cabin heat output
• Heater flow stuck open or closed
• Temperature control that does not respond correctly
• Coolant flow issues through the heater circuit
• HVAC performance problems tied to a faulty heater valve

Installation Notes and Tips

Verify connector count, terminal pin layout, and opening dimensions before installation to confirm match with the original heater valve. Inspect the surrounding coolant hoses, electrical connectors, and HVAC control signals during replacement to help avoid repeat failures. For best results, compare the removed valve to Four Seasons 74934 before final installation on the Ford C-Max.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation, supported by more than 50 years of mobile A/C experience. This heater valve is part of that temperature control component line and is built to meet the demands of HVAC service on the listed Ford C-Max applications.