Quicksilver 409 MPI Bravo Engine (400 HP)

Description

Premium power for classic sterndrive and inboard cruisers and performance boats
Built by MerCruiser, this lightweight, smooth and quiet, the 400hp 409 MPI Bravo engine features a flat-plane crankshaft that generates serious torque and horsepower, delivering an exciting boost in speed and hole shot when repowering classic sterndrive and inboard boats. Durable and efficient, the 409 engine can provide years of additional fun on the water.
Fuel-injected for surefire performance in all conditions
Factory installed fresh water cooling kit
Compatible with Mercury® SmartCraft® digital gauges, displays, and controls
CARB & EPA compliant (requires old engine return for repower)
Black-X composite valves reduce valve wear and help extend engine life
3-year MerCruiser limited warranty
Power
400hp (298 KW)
WOT RPM
5000-5800
Displacement
409 ci (6.7L)
Engine Type
Quicksilver V8 Iron Block and Aluminum Cylinder Heads with Black -X Composite Valves
Bore & Strock
4.035 x 4.00 in (102 x 102mm)
Compression Ratio
9.4:1 (with ceramic-Coated Forged Pistons)
Fuel Compatibility
87 Octane Minimum / up to 10% ethanol
Engine control system
ECM 555 with SmartCraft Can Capability
Fuel-Delivery System
Gen 2 Cool fuel (4 bar)
Fuel-Injection system
Multi-point injection
Induction system
single-plane intake with 4-blade throttle body
Ignition system
HVS with fixed-gap Spark Plugs
Charging system
65 amp (917 watts)
Water Drain System
single-point air-actuated
Exhaust System
Dry Joint
Cooling System
Closed Cooling, Long-Life 5-year antifreeze, brass seawater pump
Accessory Drive System
Serpentine Belt
Lubrication system
High-flow 100 psi oil pump, 140F oil thermostat, and copper oil cooler
Recommended engine oil
SAE 25W-50 NMMA Certified FC-W Full Synthetic
Audio Warning system
oil pressure, coolant temperature, drive lube, seawater pressure, low voltage, over-rev control (6150 RPM)
Bravo One X Gear ratio
1.65:1
Bravo Two X gear ratio
2.00:1, 2.20:1
Bravo Three X Gear Ratio
2.00:1, 2.20:1, 2.43:1
Dimensions (LxWxH)
34.5 x 29.6 x 35.8 in (876 x 752 x 909mm)
Engine Weight
985 LBS (447kg)
Boat Harness Type
10-pin
 
Replacement for 21- to 31-foot single-engine boats and 28- to 38-foot twin-engine boats built before 2010 (prior to 2008 in California) and powered by 6.2L, 7.4L, 8.1L or 8.2L sterndrive and inboard engines.