2024 MERCRUISER 4.3 ALpha 4 V

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