Mercruiser 6.2L 383 MAG Inboard 4V

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Mercruiser 6.2L 383 MAG Inboard 4V


year Mercruiser Warranty


Mercruiser Remanufactured 6.2L 383 MAG Inboard 4V

Mercruiser offers this remanufactured "turn-key" 6.2L marine engine to replace any make of 5.7L, 6.2L, 7.4L inboard applications. There is finally the perfect engine to replace a 5.7L or 7.4L classic inboard. This engine delivers more torque thatn any standard 7.4L big block, and it does so while weighing 150 lbs less. Standard and opposite rotation versions are available, so you don't have to re-engineer your classic boat with a different type of transmission to make it go again. Full roller valvetrain reduces friction and saves on fuel.



340 HP (254 kW)

Full Throttle Range

4600-5000 RPM


CID 383 (6.3L)

Engine Type

Remanufactured GM V8 Marine Iron Block & Gen + Heads - 062 casting

Bore & Stroke

4.03" x 3.75” (102mm x 95mm)

Compression Ratio

9.0:1 with Hypereutectic Pistons

Rocker Arm Ratio

1.6:1 Full Roller


Powder Metal Rods and Nodular Iron Crankshaft

Fuel Requirement

87 Octane (R+M)/2

Fuel System

Weber 750 CFM 4V Electric Choke Carburetor & Mechanical Fuel Pump

Induction System

Dual Plane Aluminum Intake Manifold with Bronze Inserts



Ignition System

Thunderbolt V with Knock Control - MIE Calibration

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 Dry-Joint Exhaust Elbow

Cooling System

Thermostatically Controlled Raw Water - 143 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, Transmission Temperature



Dimensions (LxWxH)

43” x 29” x 22”

Engine Weight

980 lbs

Boat Harness Type

14-pin with 10-pin adapter

Our Shipping Policy


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 877-639-2881 or by email at 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.


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 with the following information:

  • item part #
  • desination country and postal code

We'll get back to you quickly with a shipping quote!

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