Four Seasons 74882 HVAC Heater Control Valve

Four Seasons 74882 Heater Control Valve

Four Seasons 74882 is an OE replacement HVAC heater control valve built for pressure-operated bypass systems. It uses a plastic body with four hose connectors and 0.750 in. (19.050 mm) openings to match the original coolant routing on supported vehicles.

Heater Valve Line Details

The Four Seasons Heater Valve line focuses on direct-fit temperature control components for factory-style heater hose routing. This pressure open bypass heater valve is built to restore coolant flow control through the heater circuit without changing the original HVAC layout.

Key Features

• Pressure open bypass heater valve design
• OE replacement for factory-style fit and function
• Plastic construction
• Four hose connectors
• 0.750 in. / 19.050 mm hose openings
• Bypass style with pressure operation

Fitment

• Fits 2000-2002 Chevrolet Cavalier, Heater Valve
• Fits 2000-2002 Pontiac Sunfire, Heater Valve
• Fits 1999-2001 Oldsmobile Alero, Heater Valve
• Fits 1999-2001 Pontiac Grand Am, Heater Valve
• Fits 1999 Chevrolet Malibu, Heater Valve

What It Helps Resolve

• Heater core flow that stays open or closed at the wrong time
• Loss of cabin heat control from a failed heater valve
• Coolant routing issues in the heater hose circuit
• Leaks at a worn or cracked valve body
• Fitment problems when replacing the original HVAC heater control valve

Installation Notes and Tips

Verify hose routing, connector count, and 0.750 in. hose size before installation. Match the pressure-operated bypass layout to the original valve on the vehicle, and inspect adjacent heater hoses and clamps for wear while the system is open. This part cross-references UAC HV1201C for the same application.

Quality Assurance

Four Seasons 74882 is an OE replacement HVAC component built to match factory-style heater valve specifications for supported Chevrolet, Pontiac, and Oldsmobile applications.