The Garmin Reactor™ 40 Steer-by-wire Corepack for Volvo Penta® with GHC™ 20 Autopilot Instrument (Part Number: 010-00705-89) is a specialized marine autopilot system designed to integrate directly with Volvo Penta electronic helm and joystick steering systems. By communicating electronically over the vessel’s control bus, it eliminates the need for secondary hydraulic pumps or mechanical linkages, delivering responsive and precise heading control. At the heart of the system is a solid-state 9-axis Attitude Heading Reference System (AHRS), which minimizes course error, rudder movement, and power consumption while allowing flexible mounting orientations across the hull. The corepack includes the high-contrast GHC™ 20 display, featuring a bright 4-inch glass-bonded color screen with anti-glare optics for clear, real-time status monitoring. Full NMEA 2000® networking capability allows seamless integration with compatible Garmin chartplotters, heading sensors, and wireless helm accessories for simplified operation and route tracking.
In the Box
- Reactor 40 CCU (Course Computer Unit)
- GHC™ 20 helm control display
- Volvo IPS Gateway
- Interconnect cable
- Buzzer
- NMEA 2000® drop cables (2 meters)
- NMEA 2000 power cable
- NMEA 2000 T-connectors
- Male and female terminators
- Documentation


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