Garmin Reactor™ 40 Hydraulic Autopilot w-o GHC™ 20
SKU: 39127403271

Garmin Reactor™ 40 Hydraulic Autopilot w-o GHC™ 20

Sale price$810.00 Regular price$900.00
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Description

Garmin Reactor™ 40 Hydraulic Autopilot w-o GHC™ 20Reactor 40 Hydraulic Autopilot without GHC 20 ** Not designed to be used with Garmin Smartpump ** The Most Responsive Autopilot System on the Water Solid state 9 axis Attitude Heading Reference System (AHRS) Minimizes heading error, course deviation, rudder movement and power consumption while providing a comfortable ride Minimal commissioning and calibration Shadow Drive technology keeps you in control, even when autopilot is engaged With a complete

Reactor™ 40 Hydraulic Autopilot without GHC™ 20

** Not designed to be used with Garmin Smartpump **

The Most Responsive Autopilot System on the Water

  • Solid-state 9-axis Attitude Heading Reference System (AHRS)
  • Minimizes heading error, course deviation, rudder movement and power consumption while providing a comfortable ride
  • Minimal commissioning and calibration
  • Shadow Drive™ technology keeps you in control, even when autopilot is engaged

With a complete package designed for powerboats and sailboats, Garmin brings an advanced marine technology to the boating public that was once only available for commercial boats. The Reactor 40 autopilot series is simply the most responsive autopilot system we have ever offered.

Reactor 40 autopilots are very versatile. Both powerboat and sailing features are available in all corepacks, including heading hold, wind hold, tack/jibe, step turns and more; simply pick the autopilot that’s compatible with your existing steering system.

The Reactor 40 hydraulic autopilot corepack is ideal for all types of hydraulically steered powerboats — inboards, outboards, stern drives and diesels — or hydraulically steered sailboats. This robust unit gives powerboat users an easy-to-use autopilot system to rely upon for navigation. With its solid-state 9-axis AHRS, Reactor 40 mounts nearly anywhere, in any orientation and requires minimal commissioning. Our patented Shadow Drive technology gives boaters the security of knowing they maintain control, even when relying upon the autopilot.

Solid-state 9-axis AHRS
With its advanced solid-state 9-axis solid-state 9-axis AHRS, you can mount Reactor 40 nearly anywhere, in any orientation. In addition, this new system greatly minimizes heading error, course deviation, rudder movement and power consumption while providing a comfortable ride for all on board.

Reacts to Conditions
This amazing autopilot actually reacts to the sea to hold your course. Even when the boat is pitching and rolling, you can remain confident that the Reactor 40 autopilot will keep you on your desired course.

Minimal Commissioning and Calibration
All autopilots require commissioning and calibration — all of them. We know you just want to get on the water, so we made this process as fast and easy as possible. That’s the power of simple.

Full Integration with Garmin Chartplotters
Combined with a compatible Garmin networked chartplotter, you can have full control of Reactor 40 from wherever you are 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 BlueChart® g2 Vision® charts (sold separately), you gain optional features such as Auto Guidance¹, which automatically steers GPS paths.

Stay in Control with Shadow Drive Technology
The Reactor 40 autopilot features patented Shadow Drive technology. This gives you the security of knowing you maintain control, even when the autopilot is engaged. The Shadow Drive system automatically disengages the autopilot if the helm is turned, giving you the freedom to maneuver the boat. The autopilot automatically re-engages when you hold a steady course.

¹Auto Guidance is for planning purposes only and does not replace safe navigation operations

What's In The Box?

  • Reactor 40 CCU (Course Computer Unit)
  • ECU (Electronic Control Unit)
  • ECU power cable
  • Interconnect cable
  • Shadow Drive
  • Buzzer
  • NMEA 2000® drop cables (2 meters)
  • NMEA 2000 power cable
  • NMEA 2000 T-connectors
  • Male and female terminators
  • Documentation

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.


Product : GARMIN REACTOR40 HYDRAULIC AUTOPILOT W/O GHC 20
Manufacturer : Garmin
Manufacturer Part No : 010-00705-21
Product : GARMIN REACTOR40 HYDRAULIC AUTOPILOT W/O GHC 20
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 39127403271

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Michael Quattlebaum
Grantham, US
★★★★★ 5
Fast charger
Style: Qi2 Charging Mount
Simple to install. Holds tightly and has enough adjustment flexibility to get your phone positioned the way you want it. Fast charger and mag holds tightly. Only downside is where to plug in the charging cord. But that would be a problem with any external charger.
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Reviewed in the United States on March 6, 2026
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Tom
Charlottesville, US
★★★★★ 3
charger works, not the adhesive on the ring.
Style: Qi2 Charging Mount
The metal ring adhesive was destroyed by the unit's heat in a few weeks. Do not buy it if you need the adhesive ring to hold the phone. The blinking light ring is annoying - why is it needed.
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Reviewed in the United States on April 3, 2026
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MuscleGuy
Carnegie, US
★★★★★ 5
LOVE this Charger!
Style: Qi2 Charging Mount
This is one of the best chargers I have ever had! My phone stopped charging via the cord and this was my solution and what a awesome one it is! It charges very fast! I also LOVE the way it looks attached to my Tesla screen. Its like having a second screen. I can do Waze on one screen and Tesla navigation on the main screen. I can also control Sirius XM without having to subscribe to it separately for my tesla - which by the way is ridiculous if you already have a subscription…just make sure you done have Allstate DriveWise or other haptics that track weather you’re using your iphone while driving.
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Reviewed in the United States on March 15, 2026
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Cesar Alvarez Alvarez
Dallas, US
★★★★★ 5
good product
Style: Qi2 Charging Mount, Style: Qi2 Charging Mount
It exceeded my expectations, a really good product indeed.
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Reviewed in the United States on February 17, 2026
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Alice
Lake Worth, US
★★★★★ 5
Nice Phone mount
Great phone mount—stable, easy to use, and gets the job done! I’ve been using this phone mount for a few weeks now, and it’s exceeded my expectations. It holds my phone securely, even on bumpy roads, and the adjustable arm makes it super easy to get the right angle. Installation was a breeze—took less than 2 minutes. The grip is strong without scratching the phone, and it feels sturdy overall. Highly recommend if you’re looking for a reliable mount!
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Reviewed in the United States on July 2, 2025

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