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Product details

The Reactor 40 hydraulic autopilot system is ideal for powerboats and sailboats and can be connected to a variety of propulsion systems, such as inboards, outboards, stern drives and diesels.
Delivery includes 4" GHC20 control unit, 1.2 L hydraulic pump, electronic control unit (ECU), control course sensor (CCU), buzzer/alarm unit and innovative Shadow Drive technology.

Including 1.2 L hydraulic pump
The Garmin Autopilot Pump Kit has a hydraulic pump that steers the boat by interacting with the hydraulic steering system based on commands from the autopilot system. Suitable for hydraulic cylinders with a volume between 98 - 229 cm³.

Responsive, flexible and reliable
The solid-state 9-axis AHRS (Attitude Heading Reference System) responds reliably to sea conditions to maintain course. In addition, the autopilot system offers particularly helpful features, including heading hold, wind hold, tack/jibe, step turns and more. It also greatly minimises heading error, course deviation, rudder movement and power consumption, giving you enough time to operate sails, lines, winches or radios. The system mounts nearly anywhere, in any orientation.

Chartplotter compatibility
Combined with a compatible chartplotter, the Reactor 40 can be controlled and steered anywhere on the boat. In addition to holding its course in virtually all weather and wind conditions, the system can smoothly perform a variety of preprogrammed trolling and search procedures. Plus, with a compatible Garmin networked chartplotter and optional BlueChart g3 Vision charts (sold separately), you gain additional functions, such as Auto Guidance with automatic route suggestions.

Stay in control with Shadow Drive technology
Shadow Drive gives you the option to take the wheel at any time with Autopilot activated. The autopilot is automatically disengaged if the helm is turned and re-engages when you hold a steady course.

Further features at a glance
  • Minimal commissioning and calibration
  • Control the autopilot with an optional quatix smartwatch
  • NMEA2000 connectivity
  • Delivery includes 4" GHC20 control unit, Reactor 40 (CCU), electronic control unit (ECU), buzzer/alarm, 1.2 L hydraulic pump and Shadow Drive.

Garmin Info Center

What does an autopilot system comprise of?
What components does an autopilot system consist of and what are the individual components used for? This Garmin Support video shows you the key components of an autopilot.
Find the right autopilot.
This Garmin Support video shows you which autopilot is the right one for your boat and which components you need for your new autopilot system.

What can the latest autopilots do?
See how to operate an autopilot system and what features the latest technologies offer, explained simply in this Garmin Support video.

Technical data - control course sensor (CCU) / electronic control unit (ECU)
Power supply 10 - 30 V
Operating temperature -15 to +60 °C
Dimensions (CCU) 170 x 90 x 50 mm
Dimensions (ECU) 168 x 117 x 53 mm
Dimensions (buzzer/alarm) 23 x 25 mm (LxØ)

Technical data - Control panel GHC20
Resolution 320 x 240 px
Display type CVQA LCD colour display
Viewing angle 170°
Power supply 9 - 32 V (via NMEA2000)
Max. Power consumption 200 mA
Operating temperature -15 to +70 °C
NMEA0183 Yes
NMEA2000 Yes
Dimensions (WxHxD) 109 x 112 x 48 mm

Delivery contents:
  • Reactor 40 CCU
  • Hydraulic pump, 1.2 litres
  • GHC 20 control unit
  • Electronic control unit (ECU)
  • ECU power/connection cable
  • Connection cable
  • Shadow Drive
  • Buzzer/alarm
  • NMEA 2000 drop cables (2 meters)
  • NMEA 2000 power connection cable
  • NMEA 2000 T-connectors
  • Terminating resistors
  • Quick start guide


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