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Mercury Quicksilver 8M0187359 350 MPI Alpha Complete Marine Engine

Manufacturer

Battery Hub

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Part Number

8M0187359
06/02/2036 6:39 PM
Sale Price

$17,141.76

In Stock (10)

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Usually delivered within 2 days

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Product Details

The Mercury Quicksilver 350 MPI Alpha (MPN 8M0187359) is a fully dressed, drop-in ready marine engine designed for repowering classic sterndrive boats. This 100% new construction engine delivers 300 horsepower at 5000 RPM from a 350 cubic inch (5.7L) displacement, making it the perfect replacement for 5.0L, 5.7L, and 350 carbureted or fuel-injected engines in boats built before 2008 (California) or 2010 (other states).

Key Engine Features:

  • Cast iron engine block and Quicksilver cast iron cylinder heads with screw-in rocker studs
  • Black-X valve technology provides 42% reduction in valve wear versus traditional stainless steel valves
  • Multi-port fuel injection (MPI) using Cool Fuel II system for improved fuel economy and throttle response
  • Raw water cooling with warm exhaust manifolds and flush system
  • Roller camshaft and 1.5:1 stamped rocker arms
  • ECM 555 engine control module with Engine Guardian protection
  • SmartCraft ready with 10-pin harness for digital gauge compatibility
  • Mechanical throttle and shift controls for easy installation
  • Dry joint exhaust system
  • Special flame graphics

Performance Specifications:

  • 300 HP at the propeller (325 HP at crankshaft)
  • Full throttle RPM range: 4600-5000
  • Runs on 87 octane fuel
  • 65 amp alternator (917 watts)
  • Bore and stroke: 4.03 x 3.48 inches

This engine is designed for Alpha One sterndrive applications and comes with a 3-year limited factory warranty. Compatible with both analog cable controls and SmartCraft digital gauges. As a complete repower solution, this is EPA and CARB compliant—the old engine must be returned per EPA regulation 1068.240.

Important Note: If used with an Alpha One Gen I drive, this engine requires Seawater Pump Kit 46-8M0139983 and serpentine belt 57-865615Q03 (sold separately) for proper cooling.

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great

Extremely fast shipping. Good price. They fit perfectly.

Everything was great, packed very well. I appreciate it

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