Garmin Reactor 40 Steer-by-Wire, GHC 50
#2 in Steer-by-wireFull review
For boats with generic steer-by-wire steering that want Garmin autopilot control.
Amazon $2,799.99$2,799.99
Steer-by-wireNo
3.3/5
For boats with digital drive-by-wire steering that need an autopilot without extra hardware at the helm.
- Steer-by-wireSteering
- NoDrive in pack
- YesNMEA 2000
Check price at Amazon$2,999.99
Price checked November 6, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Talks to digital drive-by-wire steering over CAN bus, so no pump or actuator is needed
- Draws only 30 mA
- Control head and sensor included
Cons
- Only for boats with compatible drive-by-wire steering
- Maker page gives no boat size or warranty
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 | T70164 |
|---|---|
| Capability | |
| Steering type | Steer-by-wire |
| Pack type | Core pack |
| In the pack | |
| Contents | p70Rs control head, EV-2 sensor core, Evolution cable kit |
| Control head | p70Rs |
| Control head included | Yes |
| Drive or pump included | No |
| Heading sensor | EV-2 9-axis sensor core |
| Electrical | |
| Supply voltage | 12 V |
| Standby draw | 30 mA |
| NMEA 2000 / SeaTalk ng | Yes |
| Support | |
| Warranty | 2 years |
Alternatives in this steering type
Furuno NavPilot 300 OPT Kit
#3 in Steer-by-wireFull review
For multi-engine outboard fishing boats that already have SeaStar Optimus 360 steering.
Amazon $2,695$2,695
Steer-by-wire24 to 50 ftNo
Garmin Reactor 40 Yamaha Helm Master, GHC 50
#4 in Steer-by-wireFull review
For boats with Yamaha Helm Master steering.
Amazon $3,449.99$3,449.99
Steer-by-wireNo
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