Wednesday, July 24, 2024


Model: 250 PRO XS


Product Specification Listing: MERCURY 250HP PRO XS OPTIMAX Marine Engine

General Information

  • Manufacturer: Mercury Marine
  • Engine Type: Outboard
  • HP/KW: 250 HP / 186 kW
  • Recommended Fuel: 87 octane (up to 10% ethanol)
  • Warranty: 3-year limited; up to 5 years with extension options

Dimensions and Weight

  • Length: 35 inches (standard shaft length varies)
  • Width: 23 inches
  • Height: 64 inches (height varies with shaft length)
  • Weight: Approx. 505 lbs (varies based on specific model configurations)


  • Full Throttle RPM Range: 5,650 - 6,250 RPM
  • Fuel Delivery System: 2-Stage Direct Fuel Injection (DFI)
  • Induction System: EFI (Electronic Fuel Injection)
  • Performance Features:
    • Advanced Range Optimization (ARO) for fuel efficiency
    • Tuned twin-spark ignition system
    • Lightweight design for superior power-to-weight ratio

Engine Details

  • Engine Type: V6, 2-Stroke
  • Displacement: 3.0L (3,044 cc)
  • Bore & Stroke: 3.63 x 3.00 inches (92 x 76 mm)
  • Alternator: 60 Amp / 756 Watt (Belt-Driven), provides high output to power electronics and accessories
  • Cooling System: Water-cooled with thermostat and pressure-controlled

Fuel and Oil

  • Fuel System: Optimax Direct Injection system
  • Oil System: Precision-engineered oil delivery system
  • Oil Capacity: 3.0 gallons

Control and Instruments

  • Steering: Compatible with dual-cable mechanical, hydraulic steering systems
  • Shifting: Electronic throttle and shift (ETS)
  • Instruments:
    • Analog or digital gauges compatible
    • SmartCraft® technology enabled for detailed engine status and diagnostics

Environmental Compliance

  • Emissions: EPA 3-Star Ultra-Low Emissions compliant
  • Noise: Engineered to significantly reduce noise and vibration for quieter operation


  • Propeller Options: Available in various sizes and materials
  • Standard Propeller: Not included; compatible with a range of Mercury propellers

Additional Features

  • Power Trim and Tilt: Standard, with extensive tilt ranges
  • Anti-Corrosion: SeaCore technology with saltwater corrosion protection
  • Starting System: Electric start with electronic sequential multi-port fuel injection enhances starting reliability

Maintenance and Service

  • Maintenance Intervals: Specified in the owner's manual
  • Service Network: Extensive global network of authorized dealers and service centers

Optional Accessories

  • Engine Covers
  • Spare Props
  • Trolling Plates
  • Digital Throttle & Shift (DTS)
  • **SmartCraft® VesselView® displays for comprehensive engine data

For more detailed information and to configure your engine, visit Mercury Marine's official website or contact an authorized dealer.

Safety & Operational Notes

  • Always follow the manufacturer's recommended safety guidelines and maintenance schedules.
  • Ensure proper installation and compatibility with your vessel.
  • Consult with a certified marine technician for installation and service procedures.

[Product Type: Engine]

Product Specifications

Weightlb 505 lb
Weight 229 kg (504.86lbs)
Strokein 3.00 in
Stroke 76 mm (2.99in)
Rated Speed 5500 r/min
Powerkw 184 kW
Power 250 HP (186.40kw)
Displacementin3 185.9 in3
Displacement 3032 cm3 (3.03L, 185.02in3)
Cylinders Arrangement/Number V-6
Borein 3.63 in
Bore 92 mm (3.62in)