Tech Specs

In The Box
ECU (Electronic Control Unit)
ECU power cable
Interconnect cable
Buzzer
NMEA 2000® drop cables (2 meters)
NMEA 2000 T-connectors
Male and female terminators
Documentation
Manual & Warranty
Do you have an old GPS unit lying around? The GPS Nation Trade In and Up program is a great way to trade in your old and used GPS for credit towards a new GPS. The choice is entirely yours! We’ve made the process simple and streamlined. Follow these simple steps, and you will be on your way to receiving credit towards your brand new GPS!
1. Get a quote
To get your free quote, provide your GPS type, manufacturer, model, and condition. Within 24 hours, you will receive a quote for the trade-in value of your current product. The GPS trade-in/trade-up form is at the bottom of this page.
2. Ship your product(s) for trade
After accepting our offer, pack your product(s) safely and ship them to us using the pre-paid shipping label provided to you. We will provide a confirmation email when your trade-in arrives at our warehouse. You have 30 days from the date you complete your on-line trade to ship the product to GPS Nation.
3. Make your purchase
Once we receive your product at our warehouse and we validate the stated condition, we will send you a confirmation email. If you elect to receive credit towards a new GPS at gpsnation.com, your store credit will be issued, and you are free to make your purchase.
Reviews
Ask a Question
Tech Specs

In The Box
ECU (Electronic Control Unit)
ECU power cable
Interconnect cable
Buzzer
NMEA 2000® drop cables (2 meters)
NMEA 2000 T-connectors
Male and female terminators
Documentation
Manual & Warranty
Trade-In
Do you have an old GPS unit lying around? The GPS Nation Trade In and Up program is a great way to trade in your old and used GPS for credit towards a new GPS. The choice is entirely yours! We’ve made the process simple and streamlined. Follow these simple steps, and you will be on your way to receiving credit towards your brand new GPS!
1. Get a quote
To get your free quote, provide your GPS type, manufacturer, model, and condition. Within 24 hours, you will receive a quote for the trade-in value of your current product. The GPS trade-in/trade-up form is at the bottom of this page.
2. Ship your product(s) for trade
After accepting our offer, pack your product(s) safely and ship them to us using the pre-paid shipping label provided to you. We will provide a confirmation email when your trade-in arrives at our warehouse. You have 30 days from the date you complete your on-line trade to ship the product to GPS Nation.
3. Make your purchase
Once we receive your product at our warehouse and we validate the stated condition, we will send you a confirmation email. If you elect to receive credit towards a new GPS at gpsnation.com, your store credit will be issued, and you are free to make your purchase.
Overview
Garmin Reactor 40 Mechanical/Retrofit/Solenoid Corepack Without GHC Autopilot Instrument (010-00705-48)
Your Trusted Co-Pilot for Powerboats & Sailboats
The Garmin Reactor 40 mechanical/retrofit/solenoid corepack is engineered for powerboats and sailboats looking for a reliable autopilot system that works with a wide variety of steering systems. It’s perfect for captains who want a hassle-free, dependable solution to help them maintain course and focus on enjoying the water.
Key Features
-
Wide Compatibility with Steering Systems
This corepack is compatible with direct or cable-actuated steering systems, making it a versatile solution for a range of boats. It supports essential features like heading hold, wind hold, step turns, and tack/jibe modes for sailboats. -
Solid-State 9-Axis AHRS
The Reactor 40 uses a solid-state 9-axis AHRS, which allows you to mount it almost anywhere on your boat in any orientation. This advanced technology reduces heading error, minimizes power consumption, and provides better performance even in challenging sea conditions. -
Reacts to Water Conditions
This autopilot adjusts to sea conditions, keeping your boat on course even when pitching or rolling in rough water, giving you confidence no matter the conditions. -
Simple Calibration
The Reactor 40 is designed for ease of use. Commissioning and calibration are quick and straightforward, allowing you to get on the water fast without dealing with complex setups. -
Shadow Drive™ Technology
With optional Shadow Drive technology (on hydraulic installations), the autopilot automatically disengages when you manually turn the wheel, giving you freedom and control when maneuvering the boat. -
Three Class Drive Options
Choose from Class A, Class B compact, or Class B drive units for your steering system (sold separately). All Garmin linear drives come with built-in rudder feedback sensing for enhanced control and performance. -
Wireless Remote Control Capabilities
Control your autopilot from anywhere on your boat using compatible Garmin devices, such as the Reactor autopilot remote or quatix® marine smartwatches (requires a compatible Garmin chartplotter or GHC 50 autopilot instrument). -
Optional GHC 50 Bundle
For a more enhanced autopilot experience, you can pair the Reactor 40 corepack with the GHC 50 autopilot instrument, adding a dedicated touchscreen display for easy control. The GHC 50 also allows you to share data and settings with Garmin MFDs and other installed devices. -
Optional GRF™ 10 Rudder Feedback Sensor
For even better performance and peace of mind, you can add the GRF 10 rudder feedback sensor. This sensor improves autopilot functionality and is required when using the GHC 50 autopilot instrument or a compatible Garmin chartplotter. -
Powerboat & Sailing Features
The Reactor 40 corepack supports essential features for both powerboats and sailboats, such as heading hold, step turns, wind hold, and tack/jibe when paired with a wind sensor (sold separately). Additionally, enjoy Follow Route and Auto Guidance+™ features for easier navigation.
Conclusion
The Garmin Reactor 40 Mechanical/Retrofit/Solenoid Corepack is the ideal autopilot solution for powerboats and sailboats with a variety of steering systems. With its advanced AHRS, Shadow Drive technology, and easy calibration, it provides smooth, responsive control for both casual cruising and more challenging sailing conditions. When paired with the GHC 50 autopilot instrument or your compatible Garmin chartplotter, you can take your boating experience to the next level with enhanced functionality and control from anywhere on your boat.