Garmin Compact Reactor 40 Hydraulic, GHC 50
The cheapest complete Garmin autopilot, built for small single-outboard hydraulic boats.
Amazon $1,799.99$1,799.99
The Garmin Compact Reactor 40 Hydraulic, GHC 50 is the better marine autopilot overall, rated 3.1 to 3.0. The Garmin Compact Reactor 40 Hydraulic, GHC 50 leads on capability range. The Raymarine EV-100 Power Pilot Pack wins on value and warranty. The Raymarine EV-100 Power Pilot Pack costs $391.30 less ($1,408.69 vs $1,799.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Raymarine EV-100 Power Pilot Pack
A complete autopilot for a small boat with a single hydraulically steered outboard.
Amazon $1,408.69$1,408.69
Which should you buy?
- Choose the Garmin Compact Reactor 40 Hydraulic, GHC 50 for capability range (boats to 25 ft vs cylinders to 110 cc).
- Choose the Raymarine EV-100 Power Pilot Pack for value ($1,408.69 for the pack vs $1,799.99 for the pack) and warranty (2-year warranty vs 1-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every hydraulic steering marine autopilot; a clear win is highlighted. How we rank explains each one.
| Factor weight | Garmin Compact Reactor 40 Hydraulic, GHC 50 | Raymarine EV-100 Power Pilot Pack |
|---|---|---|
| Overall rating | 3.1/5 | 3.0/5 |
| Value 30% | 42 $1,799.99 for the pack | 53 $1,408.69 for the pack |
| Capability range 30% | 14 boats to 25 ft | 2 cylinders to 110 cc |
| Features 25% | 100 control head in the box, drive or pump included, heading sensor included, NMEA 2000 / SeaTalk ng | 100 control head in the box, drive or pump included, heading sensor included, NMEA 2000 / SeaTalk ng |
| Power draw 10% | 50 standby draw not published (neutral score used) | 11 300 mA standby |
| Warranty 5% | 0 1-year warranty | 25 2-year warranty |
Specifications
| Garmin Compact Reactor 40 Hydraulic, GHC 50 | Raymarine EV-100 Power Pilot Pack | |
|---|---|---|
| Capability | ||
| Steering type | Hydraulic | Hydraulic |
| Boat size | To 25 ft | - |
| Hydraulic cylinder range | - | 50 to 110 cc |
| Pack type | Complete pack | Complete pack |
| In the pack | ||
| Contents | Compact Reactor 40 hydraulic autopilot with GHC 50 instrument | p70Rs control head, EV-1 sensor core, ACU-100, Type .5 hydraulic pump |
| Control head | GHC 50 touchscreen | p70Rs |
| Control head included | Yes | Yes |
| Drive or pump included | Yes | Yes |
| Heading sensor | Solid-state 9-axis AHRS | EV-1 9-axis sensor core |
| Electrical | ||
| Supply voltage | 12 V | 12 V |
| Standby draw | - | 300 mA |
| Max drive current | - | 7 A |
| NMEA 2000 / SeaTalk ng | Yes | Yes |
| Support | ||
| Warranty | 1 year | 2 years |
| Released | 2022-06 | 2013-06 |