Garmin Reactor™ 40 mechanical/retrofitted/magnetic coil corepack excl. GHC™ 20

Our most responsive autopilot system on the water

• 9-axis solid-state AHRS (Attitude Heading Reference System)
• Minimizes direction errors, course deviations, rudder movements and power consumption while providing a comfortable sailing experience
• Minimal commissioning and calibration
• Supports heading hold, wind hold, incremental turns, and tack/bounce functions

With a complete package designed for powerboats and sailboats, Garmin is making advanced marine technology available to recreational boaters that was previously only available to commercial boats. The Reactor 40 autopilot series is simply the most responsive autopilot system we've ever offered.

Reactor 40 autopilots are highly versatile. Powerboat and sailboat features are available in all corepacks, including course hold, wind hold, tack/beam, incremental turns, and more. Simply select the autopilot that is compatible with your existing steering system. If you don't see a compatible Reactor 40, you'll find that the Reactor 40 Mechanical/Retrofit/Solenoid is compatible with a wide range of steering systems, including hydraulic, cable-operated, mechanical, and solenoid-operated. Simply pair GRF™ 10 with the drive system that is already on board.

The Reactor 40 mechanical/retrofit/solenoid autopilot corepack is perfect for sailboats and powerboats with direct or cable-actuated steering systems. This Reactor 40 cockpit autopilot system gives captains the "extra set of hands" they need so you can confidently maintain sails, lines, winches and radios without worry. With its 9-axis solid-state AHRS, the Reactor 40 can be mounted anywhere, in any orientation, and requires minimal start-up adjustment.

9-axis solid-state AHRS

With the advanced 9-axis solid-state AHRS, you can mount the Reactor 40 virtually anywhere and in any orientation. In addition, this new system significantly reduces heading errors, course deviations, rudder movement and power consumption, providing a comfortable sailing experience for everyone on board.

Responds to sea conditions

This amazing autopilot actually responds to sea conditions to keep you on course. Even when the boat is pitching and rolling, you can trust the Reactor 40 autopilot to keep you on the desired course.

Minimal start-up adjustment and calibration

All autopilots require initial adjustment and calibration – without exception. We know you want to just get out on the water, so we made this process as quick and easy as possible. The Power of Simple.

Full integration with Garmin chartplotters

When combined with our compatible network chartplotter, you have complete control of the Reactor 40 from anywhere on the boat. In addition to staying on course in virtually any weather and wind, the system can easily perform a variety of pre-programmed trolling and searching procedures. And with a compatible Garmin network chartplotter and BlueChart® g2 Vision® charts (sold separately) give you extra features like Auto Guidance ¹ , which automatically steers GPS courses.

Stay in control with Shadow Drive technology

For hydraulic installations, the Reactor 40 mechanical/retrofit/solenoid autopilot can add optional patented Shadow Drive technology. You gain peace of mind knowing that you are always in control, even when the autopilot is engaged. The Shadow Drive system automatically disengages the autopilot if the rudder is turned, giving you the freedom to maneuver the boat. The autopilot automatically reengages when you maintain a set course.

Choose between drives in 3 classes

The Reactor 40 is available with 3 linear drives (sold separately) that can control a variety of steering systems on most mid- to large-sized sailboats (depending on the specific installation). All Garmin linear drives have built-in rudder feedback detection.

• Class A Control Unit – For displacement hulls up to 28,500 lbs (13 tons)
• Class B Compact Control Unit – For displacement hulls up to 48,400 lbs (22 tons)
• Class B Control Unit – For displacement hulls up to 79,000 lbs (35.8 tons)

Get even more peace of mind

Add an optional GRF 10 rudder feedback sensor, you will get even better performance from your Reactor 40 autopilot.

¹ Auto Guidance is for planning purposes only and is not a substitute for safe navigation.