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
The Furuno NavPilot 300 OPT Kit and the Garmin Reactor 40 Yamaha Helm Master, GHC 50 are evenly matched, rated 3.0 and 3.0. The Furuno NavPilot 300 OPT Kit leads on value. The Garmin Reactor 40 Yamaha Helm Master, GHC 50 wins on features. The Furuno NavPilot 300 OPT Kit costs $754.99 less ($2,695 vs $3,449.99).
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.
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
Which should you buy?
- Choose the Furuno NavPilot 300 OPT Kit for value ($2,695 for the pack vs $3,449.99 for the pack).
- Choose the Garmin Reactor 40 Yamaha Helm Master, GHC 50 for features (control head in the box, heading sensor included, NMEA 2000 / SeaTalk ng vs NMEA 2000 / SeaTalk ng).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every steer-by-wire marine autopilot; a clear win is highlighted. How we rank explains each one.
| Factor weight | Furuno NavPilot 300 OPT Kit | Garmin Reactor 40 Yamaha Helm Master, GHC 50 |
|---|---|---|
| Overall rating | 3.0/5 | 3.0/5 |
| Value 30% | 23 $2,695 for the pack | 12 $3,449.99 for the pack |
| Capability range 30% | 86 boats to 50 ft | 50 boat size and cylinder range not published (neutral score used) |
| Features 25% | 25 NMEA 2000 / SeaTalk ng | 75 control head in the box, heading sensor included, NMEA 2000 / SeaTalk ng |
| Power draw 10% | 50 standby draw not published (neutral score used) | 50 standby draw not published (neutral score used) |
| Warranty 5% | 0 warranty not published, scored as none | 0 1-year warranty |
Specifications
| Furuno NavPilot 300 OPT Kit | Garmin Reactor 40 Yamaha Helm Master, GHC 50 | |
|---|---|---|
| Capability | ||
| Steering type | Steer-by-wire | Steer-by-wire |
| Boat size | 24 to 50 ft | - |
| Pack type | Complete pack | Core pack |
| In the pack | ||
| Contents | Autopilot components, cables and gateways for SeaStar Optimus 360 (joystick system sold separately) | Reactor 40 steer-by-wire corepack for Yamaha Helm Master with GHC 50 instrument |
| Control head | - | GHC 50 touchscreen |
| Control head included | - | Yes |
| Drive or pump included | No | No |
| Heading sensor | - | Solid-state 9-axis AHRS |
| Rudder feedback unit | No | - |
| Electrical | ||
| Supply voltage | - | 12 V |
| NMEA 2000 / SeaTalk ng | Yes | Yes |
| Support | ||
| Warranty | - | 1 year |
| Released | - | 2022-06 |