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Mercury® MerCruiser®
4.3L

Fly Out of the Gate

Power and acceleration that gets you to top speed in no time.

  • HP / kW 220 / 164
  • Maximum RPM (WOT) 4400 - 4800
  • Engine type V-6
  • Displacement (L) 4.3
  • Fuel delivery system Multi-point Electronic Fuel Injection (MPI)

The specifications displayed here may not be indicative of the entire engine family; click on the “See All Models and Specs” link to view the specs in detail.

See All Models and Specs

Durable.

Durable.

Longevity is built in, from the cast-iron block and closed freshwater cooling system to the MercFusion-process electro-deposition paint. MerCathode®, an active cathodic anti-corrosion system, is standard with Bravo® drives. SeaCore®, which protects core components with hardcoat anodizing, also is available with Bravo.

Effortless Efficiency.

Effortless Efficiency.

This engine’s exceptional power-to-weight ratio enhances fuel economy, while the MPI system locks it in. ECT (Emissions Control Technology) works hand in hand with the MPI system and the CPU “brain” to further optimize efficiency and reduce emissions.

Smooth Running.

Smooth Running.

The MPI system fine-tunes the fuel-to-air mixture in the combustion chamber, delivering ultra-smooth operation from idle to wide-open throttle. Mercury’s engineers achieved outstanding Noise / Vibration / Harshness (NVH) levels in the 4.3L. Power steering is standard, providing you complete and effortless control.

Total Versatility.

Total Versatility.

Alpha® or Bravo® drive? Single or twins? MPI or ECT? Whether your vessel is a bowrider, cuddy, pontoon or houseboat, it’s easy to configure the perfect 4.3L sterndrive power package for long-range, reliable fun.

Specifications

Mercury® MerCruiser®: 4.3L

  • HP / kW
    • 220 / 164
    Maximum RPM (WOT)
    • 4400 - 4800
    Engine type
    • V-6
    Displacement (L)
    • 4.3
    Bore and stroke
    • 4.00 x 3.48" / 101 x 88 mm
    Compression ratio
    • 9.4:1
    Recommended fuel
    • Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum
    Engine control system
    • PCM 09 with SmartCraft CAN capability OBD-M diagnostics Dual oxygen sensors
    Fuel delivery system
    • Multi-point Electronic Fuel Injection (MPI)
    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
    • Single point manual drain (Alpha)
    • Three-point manual (Bravo)
    Exhaust system
    • Iron manifolds with electro-deposition paint coated dry joint exhaust elbow
    Cooling system
    • Raw water
    • Thermostatically controlled
    Accessory drive system
    • Serpentine belt
    Recommended oil
    • NMMA Certified FCW 25W-40 Synthetic Blend
    Engine guardian system
    • High coolant temperature
    • Knock control
    • Low drive lubricant
    • Low oil pressure
    • Low voltage
    • Over-rev
    Dimensions (L x W x H)
    • 28 x 30 x 22" / 696 x 740 x 559 mm
    Weight (engine only)
    • 864 lbs / 314 kg
    Compatible drives
    • Alpha
    • Bravo One
    • Bravo Three
    • Bravo Two
    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
8/2013 4.3 MPI ECT Mercury® MerCruiser® Chaparral - 21 H2O Ski & Fish Black Max® BHB -
8/2013 4.3 MPI ECT Mercury® MerCruiser® Starcraft - 1918 Limited Alpha 4® BHB -
11/2012 4.3 MPI ECT Mercury® MerCruiser® Stingray - 215 LR Laser II BHB -
8/2012 4.3 MPI ECT Mercury® MerCruiser® Regal - 1900 Black Max® BHB -
Test Date: 8/2013
Engine: 4.3 MPI ECT Mercury® MerCruiser®
Boat: Chaparral - 21 H2O Ski & Fish
Prop: Black Max®
Type: BHB -
Test Date: 8/2013
Engine: 4.3 MPI ECT Mercury® MerCruiser®
Boat: Starcraft - 1918 Limited
Prop: Alpha 4®
Type: BHB -
Test Date: 11/2012
Engine: 4.3 MPI ECT Mercury® MerCruiser®
Boat: Stingray - 215 LR
Prop: Laser II
Type: BHB -
Test Date: 8/2012
Engine: 4.3 MPI ECT Mercury® MerCruiser®
Boat: Regal - 1900
Prop: Black Max®
Type: BHB -

See All Performance Tests

Documents

Buy the Books
Buy the Books

You can order all available Mercury literature online or through any authorized Mercury dealer. Please have your outboard or sterndrive serial number before placing the order.

  • Operation, Maintenance, and Warranty Manuals
  • Parts Manual
  • Service Manual

Purchase a Manual

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