357 MAG Bravo 4V

325 Crankshaft Horsepower

Thanks to its size and power, this is the ideal replacement engine for 5.0L, 350 MAG, 7.4L and 454 engines that power cruisers, small sport boats and large runabouts.

1-Year Factory Warranty

Available when purchased through any Mercury/MerCruiser authorized dealer

2 Additional Years of Coverage

Available from Mercury Product Protection

Resources

Specifications

Part Number 865108R85
Horsepower @ flywheel 325
Kilowatts @ flywheel 242
Maximum RPM (WOT) 4400-4800
Cylinders V-8 Remanufactured Iron Marine Block
Displacement (CID/L) 357 / 5.8
Bore & Stroke (in/mm) 4.04 x 3.48in
103 x 88mm
Compression Ratio 9.4:1
Fuel / Ethanol Tolerance 87 octane / up to 10% ethanol
Engine Control System Thunderbolt V w/Knock Control
Fuel Delivery System 4V carburetor and mechanical fuel pump
Fuel Injection System / Carburetor Type 750 cfm Weber 4V with electric choke
Induction System Dual plane aluminum intake manifold with brass water crossover
Charging alternator amp 65
Charging alternator watt 917
Water drain system Multi-point drain
Exhaust System Electro-deposition paint coated warm iron manifold with wet joint elbow
Cooling System 160F Raw Water Bravo with Sea Water Pump
Accessory Drive System Serpentine belt
Lubrication System High Flow 60 psi Oil Pump
Recommended Oil Mercury MerCruiser Synthetic Blend 25W-40, NMMA FC-W rated
Pistons Cast Hypereutectic Alloy
Cranktrain Powder Metal Rods and Nodular Iron Crankshaft
Rocker Arms 1.5:1 Stamped Steel
Length (in/mm) 32in / 814mm
Width (in/mm) 30in / 740mm
Height (in/mm) 22in / 559mm
Weight (lbs/kg) 871lbs / 395kg
Features & Related Products Analog Controls
Analog Gauges
Full closed cooling (KIT)
Hydraulic / Power steering
MerCathode
Remote Oil filter
Compatible Drives (Application Dependant - Contact Sales or Service) Bravo One 1.50:1
Bravo One 1.65:1
Bravo Two 2.00:1
Bravo Two 2.20:1
Bravo Two 2.43:1
Bravo Three 2.00:1
Bravo Three 2.20:1
Bravo Three 2.43:1

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