Specifications

Mercury® Remanufacturing: Plus-Series Alpha Sterndrives

 350 MPI Alpha
Part number
  • 863611R11
HP / kW @ flywheel
  • 300 / 224
Maximum RPM (WOT)
  • 4600 - 5000
Engine type
  • V-8 Remanufactured Iron Marine Block
Displacement (CID/L)
  • 355 / 5.8
Bore and stroke
  • 4.03 x 3.48" / 103 x 88 mm
Compression ratio
  • 9.4:1
Fuel ethanol tolerance
  • Up to 10%
Engine control system
  • ECM 555 W/Knock Control & Crankshaft Trigger
Fuel delivery system
  • GEN II Cool Fuel with Boost Pump
Fuel injection system / carburetor type
  • Multi-point electronic fuel injection (MPI)
Air induction
  • Two-piece long runner intake with 75 mm throttle body (80 mm w/DTS)
Alternator amp / Watt
  • 65 amp / 917 watt
Water drain system
  • Multi-point drain
Exhaust system
  • Iron manifold with Dry-Joint Exhaust Elbow
Cooling system
  • 160F Raw Water Alpha
Accessory drive system
  • Serpentine belt
Lubrication system
  • High Flow 60 psi Oil Pump
Recommended oil
  • Mercury MerCruiser Synthetic Blend 25W-40, NMMA Certified FC-W Synthetic Blend
Pistons
  • Cast Hypereutectic Alloy
Cranktrain
  • Powder Metal Rods and Nodular Iron Crankshaft
Rocker arms
  • 1.5:1 Stamped Steel
Dimensions (L x W x H)
  • 32 x 30 x 22" / 814 x 740 x 559 mm
Weight (engine only)
  • 932 lbs / 423 kg
Compatible drives (application dependent - contact sales or service)
  • Alpha 1.47:1
  • Alpha 1.81:1

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http://www.mercurymarine.com/en/us/engines/inboard-and-sterndrive/remanufacturing/plus-series-alpha-sterndrives/350-mpi-alpha