
Mercruiser 4.3L Alpha 4V
Description
Mercruiser Remanufactured 4.3L Alpha 4V
Mercruiser offers this remanufactured "turn-key" 4.3L marine engine to replace 3.0L & 4.3L Alpha applications. This is a V-6 that makes more power than a 5.0L V-8. Replaces 3.0L, 4.3L, 5.0L powered runabouts while delivering V-6 fuel economy.
Specifications
Power |
225 HP (168 kW) |
Full Throttle Range |
4400-4800 RPM |
Displacement |
CID 265 (4.3L) |
Engine Type |
Remanufactured GM V6 Marine Iron Block & Heads |
Bore & Stroke |
4.030 x 3.480 (102mm x 88mm) |
Compression Ratio |
9.4:1 with Cast Alloy Pistons |
Rocker Arm Ratio |
1.5:1 Full Roller Steel |
Pistons |
Cast Hypereutectic Alloy w/ Teflon Coated Skirt |
Cranktrain |
Powder Metal Rods and Nodular Iron Crankshaft |
Fuel Requirement |
87 Octane (R+M)/2 |
Fuel System |
Weber 600 cfm 4V Electric Choke Carburetor & Electric Fuel Pump |
Induction System |
Dual Plane Iron Intake Manifold |
Ignition System |
Thunderbolt V |
Charging System |
65 Amp/917 Watt Alternator |
Water Drain System |
Multi-Point Drain Hand Removable Blue Drain Plugs |
Exhaust System |
2-Piece Exhaust Iron Manifold with Wet-Joint Exhaust Elbow |
Cooling System |
Thermostatically Controlled Raw Water 160 F |
Accessory Drive System |
Serpentine Belt |
Lubrication System |
High Flow Oil Pump |
Recommended Engine Oil |
SAE 25-40 NMMA Certified FC-W Synthetic Blend |
Audio Warning System |
Oil Pressure, Coolant Temperature, Drive Lube |
Alpha Ratios |
1.47:1, 1.62:1, 1.81:1 |
Dimensions (LxWxH) |
28 x 30 x 22 |
Engine Weight |
784 lbs |
Boat Harness Type |
10-pin |
OUR SHIPPING POLICY
Domestic:
We ship our engines all over the world. In the domestic US, we ship via FedEx Freight, although on occasion other freight carriers may be used. We usually need a 1 business day handling time on our engines. Please give us a call at 888-364-4537 or by email at info@marineengines4less.com to request a shipping quote.
Our standard shipping cost is shipping to a business location or to the closest freight terminal to you. A list of Fedex Freight terminals can be found here
Residential Delivery with liftgate adds $75 to the shipping cost.
International:
Our engines have been shipped all over the world. We usually ship via ocean and air freight depending on how much of a rush our customers are in. To request a shipping quote please email us at info@marineengines4less.com with the following information:
- item part #
- desination country and postal code
We'll get back to you quickly with a shipping quote!
- Free Shipping worldwide
- Return & Exchange policy in 7 Days
- Cash On Delivery & Online Payment
- Customer Support 24x7

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