Garmin Reactor 40 Autopilot Steer-by-Wire Corepack (Standard Corepack Without GHC) is a versatile autopilot designed for both powerboats and sailboats, delivering responsive steering control and simplified on-water operation.
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Broad compatibility: Works with SeaStar Optimus, Yanmar ZT 370 stern drives with electronic power steering, and ZF 2800 Pod drives, with full control accessible via the Garmin network.
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Steer-by-wire performance: Solid-state 9-axis AHRS minimizes heading error, course deviation, and rudder movement while reducing power consumption for a smoother ride.
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Flexible installation: Mounts nearly anywhere in any orientation thanks to an advanced attitude reference system for versatile placement on almost any vessel.
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Easy commissioning: Minimal setup and calibration to get on the water quickly with a design that emphasizes fast, straightforward installation.
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Corepack versatility: Suitable for powerboats and sailing with features like heading hold, wind hold, tack/jibe, and step turns across all corepacks.
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Garmin network integration: Full control from a compatible chartplotter to manage Reactor 40 from anywhere on the boat.
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Auto Guidance: BlueChart g2 Vision charts sold separately can automatically steer GPS paths for planning (note: Auto Guidance is planning-only and does not replace safe navigation).
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Durability and environment tolerance: IPX7 waterproof rating with a fully gasketed, high-impact plastic case for demanding marine environments; operational from 5°F to 131°F (-15°C to 55°C).
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Compact CCU & wiring: CCU dimensions are 3 19/32 in diameter (91.4 mm) with a 9.5 ft (3 m) CCU cable; NMEA 2000 power input is 9–16V and LEN 3 (150 mA) for seamless network integration.
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What’s in the box: Reactor 40 CCU (Course Computer Unit), CCU cable, Buzzer, NMEA 2000 drop cables (2 meters), NMEA 2000 power cable, NMEA 2000 T-connectors and terminators, Male and female terminators, Documentation.
Reactor 40 delivers highly responsive autopilot performance that maintains your course even as the boat pitches and rolls, reducing captain workload and helping you stay on plan. With a rugged, marine-ready design and straightforward Garmin network integration, you can plan routes and manage autopilot from anywhere on the vessel. For planning scenarios, Auto Guidance can be used with BlueChart g2 Vision charts (sold separately) to prepare GPS paths; this feature is planning-only and not a substitute for safe navigation operations.
| CCU Specifications |
| Dimensions |
3 19/32 in. diameter (91.4 mm) |
| Temperature range |
From 5°F to 131°F (from -15°C to 55°C) |
| Case material |
Fully gasketed, high-impact plastic, waterproof to IEC 529 IPX7 standards |
| CCU cable length |
9.5 ft. (3 m) |
| NMEA 2000 power input |
9-16V |
| NMEA 2000 LEN |
3 (150 mA) |
