• Description
  • Why Buy From Us

Reactor™ 40 Hydraulic Corepack with SmartPump

Garmin's Most Responsive Autopilot System on the Water

  • Solid-state 9-axis Attitude Heading Reference System (AHRS) mounts in any orientation
  • Minimal heading error, course deviation, rudder movement, and power consumption with a more comfortable ride
  • Minimal commissioning and calibration
  • One compact, brushless SmartPump fits most hydraulically steered boating applications
  • Shadow Drive™ technology keeps you in control, even when autopilot is engaged

With a complete package designed for powerboats and sailboats, Garmin brings 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. Experience the ultimate hydraulic autopilot performance when paired with the one-size-fits-most, high-reliability, brushless SmartPump.

Solid-state 9-axis AHRS

With its advanced solid-state 9-axis AHRS, you can mount Reactor 40 nearly anywhere, in any orientation. In addition, this 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

You have full control of Reactor 40 from the chartplotter display. Combined with a compatible Garmin networked chartplotter and BlueChart® g2 Vision® charts, you can enjoy optional features such as Auto Guidance¹, which automatically steers GPS paths.

One SmartPump Is the Easy Solution

The Reactor 40 autopilot with SmartPump puts an end to guessing which pump size will work with your particular boat. One SmartPump works for most boats; for optimum control and confidence, you’ll know you have the right pump for your boat. Plus, you get complete control in a smaller size with better thermal performance, higher reliability, and lower power consumption. It also includes color-coded connectors to make it very easy to install. Pretty smart.

Limit the Maximum Flow Rate

Reactor 40 with SmartPump automatically adjusts the maximum flow rate for a particular boat from 0 to 2.4 L per minute. It also uses a brushless motor, which provides increased reliability, longer pump life, reduced power consumption, quiet operation, a smaller package, improved thermal performance, and higher efficiency.

Eliminate Risk of Rudder “Hard Over”

The Reactor 40 autopilot with SmartPump is a complete autopilot package. SmartPump is 1 integrated unit comprised of a motor drive circuit with the pump in a single assembly. Equipped with Intelligent Rudder Rate Technology (IRRT), it slows the rudder rate when the vessel is at high speeds and speeds up the rudder rate when the vessel is at lower speeds to provide optimal performance and safety in all conditions. The brushless motor drive eliminates the risk of rudder “hard over” due to hardware or software failures.

Enjoy a Longer Lasting System

Boating environments are harsh, especially in saltwater. So our SmartPump is protected from the elements. SmartPump is engineered from corrosion-resistant components, including anodized aluminum and nickel-plated steel parts.

Experience Advanced Autopilot Technology

With a Reactor 40 with SmartPump aboard your boat, you can have control 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 with SmartPump 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.

Connect to Networked Devices

The Reactor 40 autopilot with SmartPump for hydraulically steered boats is operated using up to 3 GHC™ helm control units. GHC communicates with the autopilot system via your NMEA 2000® network, so autopilot heading data can be shared easily with other devices. This enables MARPA and chart overlay when connected to a Garmin chartplotter. An optional handheld wireless remote control is also available; however, for the highest level of convenience, control GHC using a compatible quatix® 3 or quatix 5 marine multisport smartwatch.

Add Even More Peace of Mind

Add an optional GRF™ 10 rudder feedback sensor, and you can further enhance the performance of your Reactor 40 autopilot with SmartPump.

What's In The Box?

  • SmartPump
  • Reactor 40 CCU (Course Computer Unit)
  • GHC™ 20 helm control display
  • ECU (Electronic Control Unit) 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

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

WarningWARNING: 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.

Specifications:

  • Steering Type: Hydraulic
  • Box Dimensions: 9"H x 9"W x 11"L WT: 26.31 lbs
  • UPC: 753759189419

Why Choose Green Vista Living


At Green Vista Living, we’re passionate about providing top-quality renewable energy and eco-friendly products that not only enhance your life but also help protect the planet. We’ve built our business with one mission in mind: to be the go-to destination for renewable energy solutions, outdoor gear, and off-grid supplies. When you shop with us, you’re not just getting innovative products—you’re joining a community that’s committed to sustainability.

We Put Our Customers First


As a small, dedicated team, we care deeply about your experience. Unlike large, faceless online companies, Green Vista Living offers a personal touch in everything we do. We're here for you from start to finish—whether you need product advice, support after a purchase, or just have questions. Our knowledgeable customer service team is always just a phone call or email away, ready to assist you in any way possible.

We Share Your Passion for the Planet


Our love for the outdoors and sustainable living runs deep. Most of our team hails from the mountains of Colorado, where renewable energy and the environment are part of daily life. So when you call Green Vista Living, you’ll speak directly with an expert who understands both the technical side of renewable products and the lifestyle they support. Whether you’re looking for solar generators, EV chargers, or any of our eco-friendly offerings, you can trust us to guide you with expertise and passion.

Trusted Industry Experts


Our close partnerships with the best brands in renewable energy and outdoor gear give us insider knowledge that you won’t find anywhere else. We’ve taken the time to carefully select products that stand out for their quality and reliability. At Green Vista Living, we believe in understanding our products inside and out so that we can help you make the right choice with confidence.

More Reasons to Love Green Vista Living


Price Match Guarantee: Thanks to our partnerships, we offer the best prices around. If you find a better deal, we’ll refund the difference.


Free Shipping: We offer free shipping on most orders to the lower 48 U.S. states, making your shopping experience even easier.


100% Secure Ordering: Our site uses SSL Encryption technology to keep your payment and personal information safe and secure.


Volume Discounts: For large orders, we’re happy to provide special pricing—just reach out for a custom quote.


Authorized Dealer: As an authorized dealer for all our brands, you’ll receive full manufacturer warranties with every order.


At Green Vista Living, we aim to make your renewable energy and outdoor experience as seamless and enjoyable as possible. With our unmatched customer service, expertise, and dedication to quality, you can shop with confidence, knowing you’re supporting a company that’s as committed to the planet as you are.

Frequently Asked Questions

Yes! We provide free and fast shipping on MOST orders within the continental United States. However, some specific brands and items will require a quote. You can live chat or call us for a quote
Most orders ship out within 1–2 business days and arrive within 3–5 business days depending on your location.
We offer easy returns as long as your item meets the conditions outlined in our Return Policy. Items must be unused, in original packaging, and returned within the specified return window.
Absolutely! Our in-house product experts are here to help. Live chat or call us 513-743-829 for personalized advice before or after your purchase.
Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
Yes, we only sell 100% authentic, brand-new products, sourced directly from our manufacturers or authorized distributors.

Related Products