Resideo by HoneyWell 40003916-027 Replacement Powerhead for Zone Valve - V8043B

The Resideo by Honeywell 40003916-027 is a replacement powerhead assembly designed specifically for V8043B series zone valves. This motorized actuator component provides the electric motor and gear mechanism needed to open and close the zone valve, controlling the flow of hot water or hydronic heating fluid in residential and light commercial heating systems.

Key Features:

• Direct replacement powerhead for V8043B zone valves
• Electric motor-driven actuator for reliable zone control
• Easy installation - simply mounts onto existing valve body
• Compatible with standard 24VAC control systems
• Durable construction for long-lasting performance

This powerhead assembly is ideal for servicing and repairing existing Honeywell/Resideo zone valve installations. When the motorized actuator fails but the valve body remains functional, replacing just the powerhead offers a cost-effective alternative to replacing the entire valve assembly.