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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.
1-Year Factory Warranty
Available when purchased through any Mercury/MerCruiser authorized dealer
2 Additional Years of Coverage
Available from Mercury Product Protection
Resources
- View Engine Test
- 383 MAG Bravo 4V Installation Drawing
- 383 MAG Bravo 4V Product Data Sheet
- Repowering Sterndrives & Inboard Engines with 2011 EPA Exhaust Emission Regulations
Specifications
| Part Number | 865108R90 |
|---|---|
| Horsepower @ flywheel | 350 |
| Kilowatts @ flywheel | 261 |
| Maximum RPM (WOT) | 4800-5200 |
| Cylinders | V-8 Remanufactured Iron Marine Block |
| Displacement (CID/L) | 383 / 5.8 |
| Bore & Stroke (in/mm) | 4.03 x 3.75in 102 x 95mm |
| Compression Ratio | 9.5:1 |
| Fuel / Ethanol Tolerance | 87 octane / up to 10% ethanol |
| 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 |
| 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 dry 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 FC-W rated |
| Pistons | Forged Aluminum Alloy |
| Cranktrain | Forged Steel Rods and 4340 Steel Crankshaft |
| Rocker Arms | 1.6:1 Full Roller Aluminum |
| 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 1.81:1 Bravo Two 2.00:1 Bravo Two 2.20:1 Bravo Two 2.43:1 Bravo Three 1.81:1 Bravo Three 2.00:1 Bravo Three 2.20:1 Bravo Three 2.43:1 |
