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  • OEM MerCruiser Plus Series 4.3 4V Alpha Engine Motor 225 HP 865108R89 8M0178620 8M0187349
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OEM MerCruiser Plus Series 4.3 4V Alpha Engine Motor 225 HP 865108R89 8M0178620 8M0187349

Marine parts, fast fulfillment, real support
Get the right part without slowing down your season. PowerBoatSupply helps boat owners order with confidence, backed by trusted marine parts expertise and responsive support.
✓ Fast shipping ✓ Fitment help ✓ Secure checkout
Brand:
Part Number:
714-8M0187349
$11,812.50 $11,499.00
— You save $313.50
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Description

MerCruiser Plus Series 4.3 4V Alpha Engine Motor 225 HP 8m0178620

Part number
  • 8M0178620
HP / kW @ flywheel
  • 225 / 168
Maximum RPM (WOT)
  • 4200 - 4600
Engine type
  • V-6 Remanufactured Iron Marine Block
Displacement (CID/L)
  • 265 / 4.3
Bore and stroke
  • 4.03 x 3.48" / 102 x 88 mm
Compression ratio
  • 9.4:1
Fuel ethanol tolerance
  • Up to 10%
Fuel requirement
  • 87 octane (R+M)/2
Engine control system
  • EST
Fuel delivery system
  • 4V carburetor and electric fuel pump
Fuel injection system / carburetor type
  • 600 cfm Weber 4V with electric choke
Air induction
  • Dual plane iron intake manifold
Alternator amp / Watt
  • 65 amp / 917 watt
Water drain system
  • Multi-point drain
Exhaust system
  • Electro-deposition paint coated warm iron manifold with wet joint elbow
Cooling system
  • 160F Raw Water
Accessory drive system
  • Serpentine belt
Lubrication system
  • High Flow 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 Full Roller Steel
Dimensions (L x W x H)
  • 28" x 30" x 22" / 696mm x 740mm x 559 mm
Weight (engine only)
  • 784 lbs / 356 kg
Compatible drives (application dependent - contact sales or service)
  • Alpha 1.47:1
  • Alpha 1.62:1
  • Alpha 1.81:1
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Warranty Information

Mercury Marine & Quicksilver products carry a 1 year factory warranty against defects and workmanship. Serialized items such as engines, drives, and transom assemblies must be installed by a dealer for warranty to be valid.
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Specs

MPN:
8m0178620
Engine Size:
v6
Horse Power:
225
Drive Type:
Alpha

Reviews

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