Meet the Garmin Reactor 40 Mechanical Retrofit Corepack (No GHC Control), Model 010-00705-48. This below-deck autopilot corepack brings advanced marine autopilot technology to both sailboats and powerboats, delivering precise steering with minimal setup and without the GHC control module.
Powered by a solid-state 9-axis AHRS, the Reactor 40 minimizes heading error, course deviation, rudder movement, and power consumption—while delivering a smoother, more comfortable ride for everyone on board. The system mounts almost anywhere, in any orientation, and requires only minimal commissioning and calibration to get you on the water fast.
Key capabilities
-
Versatile steering compatibility: ideal for direct or cable-actuated steering systems, including hydraulic, cable drive, mechanical, and solenoid configurations. Pair with GRF 10 for broad drive compatibility.
-
Multi-boat functionality: supports both sailing and powerboat modes, with features like heading hold, wind hold, step turns, and tack/jibe for confident control.
-
Below-deck convenience: compact corepack design keeps installation tidy while delivering dependable autopilot performance—an extra set of hands to manage sails, lines, winches, and radios.
-
Sea-aware steering: the autopilot reacts to sea conditions to hold your course even as the boat pitches and rolls, enhancing stability and comfort on long passages.
-
Smart integration: when paired with a compatible Garmin networked chartplotter, you can control Reactor 40 from anywhere on the boat and run preprogrammed trolling and search procedures.
Optional navigation enhancements include Auto Guidance with compatible Garmin BlueChart g2 Vision charts (sold separately), which automatically steers GPS paths to optimize routes. For hydraulic installations, add-on Shadow Drive technology provides an extra layer of security, helping you maintain control as you navigate challenging conditions.
Whether you’re upgrading an existing system or outfitting a new vessel, the Garmin Reactor 40 Mechanical Retrofit Corepack delivers precise autopilot performance, simple setup, and flexible compatibility—so you can focus on the voyage ahead.
| CCU dimensions |
4.3 " x 4.4 " x 1.9 " (10.9 x 11.2 x 4.8 cm) |
| ECU dimensions |
6.6 " x 4.6 " x 2.1 " (16.8 x 11.7 x 5.3 cm) |
| Supply voltage |
10 V to 30 V |
| Operating temperature |
-15° C to 60 C° (5° F to 140° F) |
| Maximum sustained motor current |
15A |
| Maximum instantaneous motor current |
40A |
| Maximum clutch current |
2.5A (for drives requiring higher current than 2.5A, a relay needs to be added to the clutch circuit) |
