Mercury 55 HP Sea Pro – Mercury SeaPro commercial outboards are designed to work as hard as you do…engineered to be ultra-tough working partners for everyone making their living on the water.  They’ve earned their credentials for reliability by performing under the toughest working conditions possible, to deliver year-after-year of trouble-free operation.

HP / kW
  • 55 / 41.1
Displacement (CID/CC)
  • 59
Cylinder Configuration
  • 3
Full throttle RPM
  • 5000-5500
Air induction
  • Loop-charged (3 carb)
Fuel induction system
  • Carbureted
Alternator amp / Watt
  • 18-amp (254 watt)
Recommended fuel
  • 87% octane / up to 10% ethanol
  • Pre-Mix 50:1
Recommended oil
  • Mercury Premium 2 Stroke Outboard oil
Starting
  • Manual
Steering
  • Tiller
Shaft length
  • 20″ / 508 mm
  • 22.5″ / 572 mm
Gearcase ratio
  • 1.64:1
Dry weight *Lightest model available
  • 220 lb / 100kg
Bore and stroke
  • 2.9 x 2.8″ / 76 x 71mm
Ignition
  • Modular CDI
Gear shift
  • F-N-R
Trim system
  • Gas assist
Exhaust system
  • Through prop
Lubrication system
  • Pre-Mix
Oil Capacity
  • 2.38 qts / 2.24 l