The simplest way to add a networked autopilot to a mid-size wheel-steered sailboat up to 16,500 lb.
Amazon $1,679.26
For boats with a mechanical or solenoid steering drive that add Garmin control.
- MechanicalSteering
- NoDrive in pack
- YesNMEA 2000
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
- Fits mechanical, retrofit and solenoid steering
- GHC 50 touchscreen included
- Solid-state AHRS mounts in any orientation
- No drive in the pack
- Listing publishes no boat size or power draw
The Garmin Reactor 40 family
Every Garmin Reactor 40 model we rank, smallest first. Ratings compare each against its own steering type.
| Model | Steering | Rating | Price |
|---|---|---|---|
| Garmin Compact Reactor 40 Hydraulic, GHC 50 | Hydraulic | 3.1/5 | $1,799.99 |
| Garmin Reactor 40 Hydraulic Corepack, GHC 50 | Hydraulic | 3.2/5 | $4,399.99 |
| Garmin Reactor 40 Mechanical Corepack, GHC 50 (this one) | Mechanical | 3.2/5 | $2,249.99 |
| Garmin Reactor 40 Steer-by-Wire, GHC 50 | Steer-by-wire | 3.1/5 | $2,799.99 |
| Garmin Reactor 40 Yamaha Helm Master, GHC 50 | Steer-by-wire | 3.0/5 | $3,449.99 |
| Garmin Reactor 40 Kicker Autopilot, GHC 50 | Kicker motor | 3.3/5 | $2,999.99 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its steering type. How we rank explains each one.
Specifications
| Model number | 010-02794-02 |
|---|---|
| Capability | |
| Steering type | Mechanical |
| Pack type | Core pack |
| In the pack | |
| Contents | Reactor 40 course computer, GHC 50 autopilot instrument (mechanical, retrofit or solenoid drive sold separately) |
| Control head | GHC 50 touchscreen |
| Control head included | Yes |
| Drive or pump included | No |
| Heading sensor | Solid-state 9-axis AHRS |
| Electrical | |
| Supply voltage | 12 V |
| NMEA 2000 / SeaTalk ng | Yes |
| Support | |
| Warranty | 1 year |
| Released | 2022-06 |
Alternatives in this steering type
For mid-size sailboats with an existing mechanical drive, or a buyer adding one separately.
Amazon $2,499.99For boats with solenoid-controlled power steering and no autopilot drive of their own.
Amazon $2,799.99Compare
Compare the Garmin Reactor 40 Mechanical Corepack, GHC 50 with any other marine autopilot →
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