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MerCruiser Quicksilver 409 MPI Bravo FWC (Closed Cooling) Engine 400 HP 8m0185589

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409 MPI BRAVO® FWC - 712-8M0185589

Premium power for classic sterndrive and inboard cruisers and performance boats

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
  • 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 limited warranty

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.

  • 4340 forged steel stroker crankshaft

3 year Warranty is only valid if installed or inspected and registered by a MerCruiser dealer! 


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Warranty Information

Mercury Marine & Quicksilver products carry a 1 year factory warranty against defects and workmanship. Serialized items such as engines, drives, and transom assemblies must be installed by a dealer for warranty to be valid.
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Engine Size:
Small Block V8
Horse Power:
Drive Type:


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