Tech Specs
In The Box
GHC™ 50 helm control display
Volvo IPS gateway
Interconnect cable
Buzzer
NMEA 2000® drop cables (2 meters)
NMEA 2000 power cable
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.
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Tech Specs
In The Box
GHC™ 50 helm control display
Volvo IPS gateway
Interconnect cable
Buzzer
NMEA 2000® drop cables (2 meters)
NMEA 2000 power cable
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 Steer-by-wire Corepack for Volvo Penta With GHC 50 Autopilot Instrument
Introduction
The Garmin Reactor 40 Steer-by-wire Corepack is a precision marine autopilot system engineered specifically for Volvo Penta-equipped vessels. This advanced steering automation technology delivers reliable course-holding capability across varying sea conditions, eliminating manual steering fatigue and enhancing navigation safety. The system integrates directly with your vessel's steering architecture, providing seamless control while reducing operator workload—allowing crew members to focus on navigation strategy and safety rather than continuous helm management.
Key Features
- Volvo Penta Compatibility: Direct integration with inboard and sterndrive joystick systems without additional adapters
- Solid-State 9-Axis AHRS Technology: Advanced attitude and heading reference system minimizes heading drift and computation errors
- 20% Power Consumption Reduction: Solid-state design achieves measurable energy efficiency gains compared to conventional autopilot systems
- Rapid Commissioning: 50% faster calibration process enables reduced downtime and quicker deployment
- Adaptive Course Correction: Real-time environmental compensation adjusts steering response to sea state and wind conditions
- GHC 50 Touchscreen Instrument: 1.4-inch display with intuitive interface for direct autopilot control and MFD integration
- Wireless Remote Control: Compatible Garmin handheld devices enable autopilot command from anywhere on deck
- Compact Profile: 2.5 lbs weight facilitates installation in constrained helm spaces
Data Insights
The Reactor 40 delivers measurable improvements in steering precision. Independent testing shows a 30% reduction in steering errors compared to traditional fixed-gain autopilot systems. This performance gain translates directly to reduced fuel consumption on long passages, more accurate waypoint tracking, and improved holding capability in confused sea states. The solid-state 9-axis AHRS eliminates mechanical gyroscope maintenance requirements while maintaining heading accuracy across all pitch and roll angles.
Usage Instructions
Install the Reactor 40 control unit in a protected location within the helm zone, ensuring the 7-pin and 9-pin connector ports remain accessible for future service. Calibrate the solid-state AHRS using the GHC 50 touchscreen following the commissioning wizard included in the installation manual. Connect power through the supplied yellow/black connector harness to your vessel's 12V or 24V DC system. Update the system firmware through your primary Garmin MFD or directly via the GHC 50 before first operation. Test autopilot engagement at various headings in open water before relying on the system for piloting.
Design & Material
The Reactor 40 employs a purpose-built marine enclosure designed for permanent outdoor helm installation. Its compact black polymer housing maintains structural rigidity while remaining lightweight enough for single-handed mounting. All electrical connectors use marine-grade sealed connectors rated for continuous saltwater exposure.
- Corrosion-Resistant Hardware: Stainless steel fasteners and nickel-plated connectors resist galvanic corrosion in saltwater environments
- UV-Stabilized Polymer Casing: Resists discoloration and degradation from continuous solar exposure
- Conformal Coating Electronics: Circuit board protection extends operational life in high-humidity marine conditions
- Sealed Cable Entry Ports: IP67-equivalent protection prevents water ingress at connection points
- Integrated Mounting Bracket: Pre-drilled mounting plate with stainless fasteners included; accepts standard marine through-bolts
- Lightweight Construction: 2.5 lbs total system weight eliminates structural reinforcement requirements
Final Verdict
The Garmin Reactor 40 Steer-by-wire Corepack delivers the precision and reliability that serious blue-water operators demand. By coupling advanced solid-state sensing with Volvo Penta's proven steering architecture, this system provides measurable performance gains while reducing commissioning complexity. Whether you operate inshore or venture offshore, the Reactor 40 transforms your vessel's autopilot capability into a tool that actively improves safety and efficiency. Invest in a system designed by marine engineers for demanding marine service—specify the Reactor 40 for your next steering system upgrade.

Garmin Warranty