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Mercury® Remanufacturing
Plus-Series Bravo Sterndrives

The ideal replacement engine.

Completely renewed to original specs.

See All Models and Specs

357 MAG Bravo 4V

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.

383 MAG Bravo 4V

383 MAG Bravo 4V

350 Crankshaft Horsepower

Same power and more torque than a 454 HO carbureted engine. This torque monster delivers 429 ft-lbs of raw torque at 3800 RPM to launch even the heaviest boats with authority. When equipped with the same marine exhaust headers as found on the 383 Scorpion®, this engine produces 370 HP and 456 ft-lbs of torque—more than a 502 carbureted engine. This is the ideal replacement engine for 454HO and 502 HO carbureted engines that power cruisers, large runabouts, and sport boats. Marine exhaust headers sold separately.

Specifications

Mercury® Remanufacturing: Plus-Series Bravo Sterndrives

  • Part number
    • 8M0085999
    HP / kW @ flywheel
    • 440 / 328
    Maximum RPM (WOT)
    • 4200 - 4600
    Engine type
    • 8.9L Mercury V-8 iron block & remanufactured heads
    Displacement (CID/L)
    • 540 / 8.9
    Bore and stroke
    • 4.50 x 4.25" / 114 x 108 mm
    Compression ratio
    • 8.6:1 with forged pistons
    Fuel requirement
    • 87 octane (R+M)/2
    Fuel delivery system
    • Holley 800 CFM electric choke carburetor, mechanical fuel pump
    Air induction
    • Single-plane aluminum intake with bronze crossover and pads
    Ignition
    • Thunderbolt V with knock control
    Alternator amp / Watt
    • 65 amp / 917 watt
    Water drain system
    • Multi-point drain - Hand Removable Blue Drain Plugs
    Exhaust system
    • Iron manifolds with 4" / 102 mm diameter 316 stainless steel dry joint exhaust elbows
    Cooling system
    • Thermostatically Controlled Raw Water - 143F
    Accessory drive system
    • Serpentine belt
    Lubrication system
    • High flow oil pump, copper oil cooler, oil thermostat
    Recommended oil
    • SAE 25W-50 FC-W synthetic blend racing oil
    Engine guardian system
    • High coolant temperature
    • Low drive lubricant
    • Low oil pressure
    Rocker arms
    • 1.7:1 stamped steel
    Dimensions (L x W x H)
    • 34 x 33 x 27" / 871 x 830 x 689 mm
    Weight (engine only)
    • 1025 lbs / 465 kg
    Compatible drives (application dependent - contact sales or service)
    • Bravo One X 1.36:1
    • Bravo One X 1.50:1
    • Bravo One XR 1.36:1
    • Bravo One XR 1.50:1
    • Bravo One XZ 1.50:1
    • Bravo Three X 1.81:1
    • Bravo Three XR 1.81:1
    • Bravo Three XR 2.00:1
    • Bravo Two X 1.81:1
    Compare With Other Products
  • Part number
    • 8M0089472
    HP / kW @ flywheel
    • 425 / 317
    Maximum RPM (WOT)
    • 4600 - 5000
    Engine type
    • Remanufactured 8.1L Mercury V-8 iron block and heads
    Displacement (CID/L)
    • 496 / 8.1
    Bore and stroke
    • 4.25 x 4.38" / 108 / 111 mm
    Compression ratio
    • 9.1:1 with hypereutectic pistons
    Fuel requirement
    • 87 octane (R+M)/2
    Engine control system
    • PCM 555
    Fuel delivery system
    • GEN III cool fuel
    Fuel injection system / carburetor type
    • Sequential multi-point electronic fuel injection (MPI)
    Air induction
    • Two-piece long runner intake with 75 mm throttle body (80 mm w/DTS)
    Ignition
    • Distributorless ignition with knock control and platinum spark plugs
    Alternator amp / Watt
    • 65 amp / 917 watt
    Water drain system
    • Single point air actuated
    Exhaust system
    • Iron manifolds with 4" / 102 mm diameter 316 stainless steel dry joint exhaust elbows
    Cooling system
    • Brass sea water pump
    • Closed cooling
    • Long life 5-year antifreeze
    Accessory drive system
    • Serpentine belt
    Lubrication system
    • High flow oil pump and copper engine oil cooler
    Recommended oil
    • Mercury MerCruiser Synthetic Blend 25W-40, NMMA FC-W rated
    Engine guardian system
    • Exhaust manifold temperature
    • High coolant temperature
    • Knock control
    • Low drive lubricant
    • Low oil pressure
    • Low voltage
    • Low water pressure
    • Over-rev
    Rocker arms
    • 1.7:1 stamped steel
    Dimensions (L x W x H)
    • 35 x 33 x 24" / 888 x 840 x 603 mm
    Weight (engine only)
    • 1131 lbs / 513 kg
    Compatible drives (application dependent - contact sales or service)
    • Bravo One X 1.50:1
    • Bravo One XR 1.50:1
    • Bravo One XZ 1.50:1
    • Bravo Three XR 1.81:1
    • Bravo Three XR 2.00:1
    • Bravo Two X 1.81:1
    Compare With Other Products
  • Part number
    • 8M0064807
    HP / kW @ flywheel
    • 350 / 261
    Maximum RPM (WOT)
    • 4800 - 5200
    Engine type
    • Remanufactured 5.7L GM V-8 Marine Iron Block & Vortec Heads
    Displacement (CID/L)
    • 385 / 6.3
    Bore and stroke
    • 4.04 x 3.75" / 103 x 95 mm
    Compression ratio
    • 9.0:1 with forged aluminum pistons
    Fuel requirement
    • 87 octane (R+M)/2
    Engine control system
    • ECM 555 W/Knock Control & Crankshaft Trigger
    Fuel delivery system
    • MPI with Gen II Cool Fuel
    Air induction
    • Two-piece long runner intake with 75 mm throttle body (80 mm w/DTS)
    Ignition
    • Crank fired high voltage switch with knock control
    Alternator amp / Watt
    • 65 amp / 917 watt
    Water drain system
    • Multi-point drain - Hand Removable Blue Drain Plugs
    Exhaust system
    • Iron manifold with Dry-Joint Exhaust Elbow
    Cooling system
    • Thermostatically Controlled Raw Water - 143F
    Accessory drive system
    • Serpentine belt
    Lubrication system
    • High flow oil pump, copper oil cooler, oil thermostat
    Recommended oil
    • SAE 25W-50 FC-W synthetic blend racing oil
    Engine guardian system
    • High coolant temperature
    • Low drive lubricant
    • Low oil pressure
    • Low water pressure
    Rocker arms
    • 1.6:1 Full Roller
    Dimensions (L x W x H)
    • 32 x 30 x 22" / 814 x 740 x 559 mm
    Weight (engine only)
    • 932 lbs / 423 kg
    Compatible drives (application dependent - contact sales or service)
    • Bravo One 1.50:1
    • Bravo Three 1.81:1
    Compare With Other Products
  • Part number
    • 865108R80
    HP / kW @ flywheel
    • 350 / 261
    Maximum RPM (WOT)
    • 4800 - 5200
    Engine type
    • V-8 Remanufactured Iron Marine Block
    Displacement (CID/L)
    • 383 / 6.3
    Bore and stroke
    • 4.03 x 3.75" / 102 x 95 mm
    Compression ratio
    • 9.0:1
    Fuel ethanol tolerance
    • Up to 10%
    Engine control system
    • ECM 555 W/Knock Control & Crankshaft Trigger
    Fuel delivery system
    • GEN II Cool Fuel with Boost Pump
    Fuel injection system / carburetor type
    • Multi-point electronic fuel injection (MPI)
    Air induction
    • Two-piece long runner intake with 75 mm throttle body (80 mm w/DTS)
    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 Bravo with Sea Water Pump
    Accessory drive system
    • Serpentine belt
    Lubrication system
    • High Flow 100 psi 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 Forged 4340 Steel Crankshaft
    Rocker arms
    • 1.6:1 Roller Tip Steel
    Dimensions (L x W x H)
    • 32 x 30 x 22" / 814 x 740 x 559 mm
    Weight (engine only)
    • 932 lbs / 423 kg
    Compatible drives (application dependent - contact sales or service)
    • Bravo One 1.50:1
    • Bravo One 1.65:1
    • Bravo Three 1.81:1
    • Bravo Three 2.00:1
    • Bravo Three 2.20:1
    • Bravo Three 2.43:1
    • Bravo Two 1.81:1
    • Bravo Two 2.00:1
    • Bravo Two 2.20:1
    • Bravo Two 2.43:1
    Compare With Other Products
  • Part number
    • 865108R90
    HP / kW @ flywheel
    • 350 / 261
    Maximum RPM (WOT)
    • 4800 - 5200
    Engine type
    • V-8 Remanufactured Iron Marine Block
    Displacement (CID/L)
    • 383 / 5.8
    Bore and stroke
    • 4.03 x 3.75" / 102 x 95 mm
    Compression ratio
    • 9.5:1
    Fuel ethanol tolerance
    • Up to 10%
    Engine control system
    • Thunderbolt V w/Knock Control
    Fuel delivery system
    • 4V carburetor and electric fuel pump
    Fuel injection system / carburetor type
    • 750 cfm Weber 4V with electric choke
    Air induction
    • Dual plane aluminum intake manifold with brass water crossover
    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
    • 143F Raw Water Bravo with Sea Water Pump & Engine Oil Cooler
    Accessory drive system
    • Serpentine belt
    Lubrication system
    • High Flow 100 psi Oil Pump
    Recommended oil
    • Mercury MerCruiser Synthetic Blend 25W-40, NMMA Certified FC-W Synthetic Blend
    Pistons
    • Forged Aluminum Alloy
    Cranktrain
    • Forged Steel Rods and 4340 Steel Crankshaft
    Rocker arms
    • 1.6:1 Full Roller Aluminum
    Dimensions (L x W x H)
    • 32 x 30 x 22" / 814 x 740 x 559 mm
    Weight (engine only)
    • 871 lbs / 395 kg
    Compatible drives (application dependent - contact sales or service)
    • Bravo One 1.50:1
    • Bravo One 1.65:1
    • Bravo Three 1.81:1
    • Bravo Three 2.00:1
    • Bravo Three 2.20:1
    • Bravo Three 2.43:1
    • Bravo Two 1.81:1
    • Bravo Two 2.00:1
    • Bravo Two 2.20:1
    • Bravo Two 2.43:1
    Compare With Other Products
  • Part number
    • 865108R85
    HP / kW @ flywheel
    • 325 / 242
    Maximum RPM (WOT)
    • 4400 - 4800
    Engine type
    • V-8 Remanufactured Iron Marine Block
    Displacement (L)
    • 357 / 5.8
    Displacement (CID/L)
    • 357 / 5.8
    Bore and stroke
    • 4.04 x 3.48" / 103 x 88 mm
    Compression ratio
    • 9.4:1
    Fuel ethanol tolerance
    • Up to 10%
    Engine control system
    • Thunderbolt V w/Knock Control
    Fuel delivery system
    • 4V carburetor and electric fuel pump
    Fuel injection system / carburetor type
    • 750 cfm Weber 4V with electric choke
    Air induction
    • Dual plane aluminum intake manifold with brass water crossover
    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 60 psi 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 Stamped Steel
    Dimensions (L x W x H)
    • 32 x 30 x 22" / 814 x 740 x 559 mm
    Weight (engine only)
    • 871 lbs / 395 kg
    Compatible drives (application dependent - contact sales or service)
    • Bravo One 1.50:1
    • Bravo One 1.65:1
    • Bravo Three 2.00:1
    • Bravo Three 2.20:1
    • Bravo Three 2.43:1
    • Bravo Two 2.00:1
    • Bravo Two 2.20:1
    • Bravo Two 2.43:1
    Compare With Other Products

Performance Tests

Read the reviews.

Mercury engineering reports and performance data. All available on-line for your review.

BHB - Boat House Bulletin Review
Test Date Engine Boat Prop Type
7/2010 357 MAG Bravo 4V Mercury® Remanufacturing Bayliner - 288 Flybridge Classic Bravo Three® BHB -
7/2010 383 MAG Bravo 4V Mercury® Remanufacturing Bayliner - 288 Flybridge Classic Bravo Three® BHB -
Test Date: 7/2010
Engine: 357 MAG Bravo 4V Mercury® Remanufacturing
Boat: Bayliner - 288 Flybridge Classic
Prop: Bravo Three®
Type: BHB -
Test Date: 7/2010
Engine: 383 MAG Bravo 4V Mercury® Remanufacturing
Boat: Bayliner - 288 Flybridge Classic
Prop: Bravo Three®
Type: BHB -

See All Performance Tests

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