Mercruiser 5.7L MPI Horizon Inboard Turn Key Engine

Mercruiser 5.7L 357 MPI Inboard



Short description:

Mercruiser 5.7L MPI Horizon Inboard


1 year Mercruiser Warranty


Mercruiser Remanufactured 5.7L 357 MPI Horizon Inboard

Mercruiser offers this remanufactured "turn-key" 5.7L marine engine to replace any make of 5.7L, 6.0L, 6.2L, or 7.4L inboard applications (inline or v-drive). This is the idea repower for your inboard cruiser up to 34'.



310 HP (231 kW)

Full Throttle Range

4400-4800 RPM


CID 357 (5.8L)

Engine Type

Remanufactured GM V8 Marine Iron Block & Vortec Heads

Bore & Stroke

4.04” x 3.48” (103mm x 88mm)

Compression Ratio

9.4:1 with Cast Alloy 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

MPI with Gen II Cool Fuel

Induction System

2-piece Long Runner Intake with 75mm Throttle Body

Control System

ECM 555 with SmartCraft CAN Capability

Ignition System

Crank-fired High Voltage Switch w/Knock Control

Charging System

65 Amp/917 Watt Alternator

Water Drain System

Single Point Air-Actuated Water Drain with Flush Port

Exhaust System

2-Piece Exhaust – Iron Manifold with Dry-Joint Exhaust Elbow

Cooling System

Full Closed Cooling System - Manifolds Included

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, Water Pressure

Compatible Transmissions

ZF 63A, ZF 63IV, ZF 80A, VD 5000A, 5000V

VD 72C - requires dealer installed spring plate

ZF 63C - requires dealer installed spring plate

Dimensions (LxWxH)

43” x 30” x 22”

Engine Weight

980 lbs

Boat Harness Type


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 888-364-4537 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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