4.3L Alpha 4V EST - Engine Only

 

4.3L Alpha 4V EST Sterndrive Engine Only. 225 HP @ 4600 RPM, 4.3 Liter Fully Dressed Marine Engine. Engine Features: Special Flame Graphics, 600 cfm 4bbl Carburetor, Exclusive High‑Torque Aluminum Intake Manifold with Bronze Water Crossover & Pads, Electric Fuel Pump, 2‑Piece Wet Joint Exhaust, Nodular Iron Crankshaft, Billet Steel Roller Camshaft, Vortec Cast Iron Cylinder Heads, Stainless Steel Valves, 1.5:1 Roller Rocker Arms, EST Analog Ignition, 10‑Pin Harness. Runs on 87 Octane Fuel.

 

225 HP Remanufactured Engine Replaces MerCruiser 4.3L & 5.0L sterndrive engines.

 

 

Specifications

 

HP / kW @ flywheel	225 / 168
Maximum RPM (WOT)	4400 - 4800
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" / 696 x 740 x 559 mm
Weight (engine only)	784 lbs / 356 kg
Compatible drives (application dependent - contact sales)	Alpha 1.47:1 Alpha 1.62:1 Alpha 1.81:1

 

• 43l_alpha_4v_installation_drawing-865108r89.pdf