Dorman 902-809 HVAC Heater Control Valve

Dorman HVAC Heater Control Valve 902-809

Dorman 902-809 is a specific-fit HVAC heater control valve built with a plastic housing and vacuum-operated valve action. It is engineered to restore proper heater coolant flow control in vehicles with manual air conditioning controls, helping maintain consistent cabin temperature performance.

Key Features

• Specific-fit HVAC heater control valve for direct application matching
• Vacuum operated for controlled heater circuit operation
• Plastic housing for application-specific durability
• 1 input port and 2 output ports for the listed HVAC routing
• Designed for vehicles equipped with manual air conditioning controls
• Cross-references OE-style part numbers 12756727 and SK902809 for the same application

Application Details

This Dorman heater control valve, part number 902-809, is used in HVAC systems that regulate coolant flow through the heater core. It is listed for 2004-2012 Chevrolet Chevy models with manual air conditioning controls, 1999-2009 Saab 9-5, 1997-2001 Cadillac Catera, 2001 Chevrolet Chevy, and 1996-1999 Chevrolet Chevy. For buyers searching for a heater control valve for 2004-2012 Chevrolet Chevy manual A/C systems or a replacement HVAC heater control valve for Saab 9-5 and Cadillac Catera applications, 902-809 provides a direct-fit service part option.

What It Helps Fix

• Heat stuck on or stuck off
• Inconsistent cabin temperature control
• Coolant flow not responding to HVAC commands
• Vacuum-actuated heater valve failure
• Loss of heater performance caused by a worn valve body

Installation Notes

Verify the vehicle uses manual air conditioning controls before ordering. Match the vacuum-operated layout, port count, and hose routing to the original valve on the vehicle. Inspect vacuum lines and coolant hoses during replacement so the new valve can operate correctly after installation.

Quality Assurance

Dorman engineers this HVAC heater control valve with robust materials to improve durability and maintain proper HVAC system function. The part number is 902-809.