MerCruiser 3.0 MPI/TKS – 181 cid

The Mercury Mercruiser 3.0L is one of the most popular sterndrives on the planet. It is the ideal choice for runabouts up to 19 feet. There are two variants of the engine available; a carbureted version and a multiport fuel injected version.

Mercruiser 3.0 MPI ECT MerCruiser 3.0L TKS
Multiport Fuel Injected Carbureted

SPECIFICATIONS

HP / kW
  • 135 / 99.3
Maximum RPM (WOT)
  • 4400 – 4800
Engine type
  • Inline 4
Displacement (L)
  • 3.0
Bore and stroke
  • 4.00 x 3.60″ / 101 x 91 mm
Compression ratio
  • 9.3:1
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) or
  • 2V carb with turn-key start and electric fuel pump
Air induction
  • Single piece iron intake with 56mm throttle body
Ignition
  • Crank fired high voltage switch with knock control
Alternator amp / Watt
  • 65 amp / 917 watt
Water drain system
  • EZ Water Drain
Exhaust system
  • Electro-deposition paint coated iron manifold with dry joint elbow
Cooling system
  • Raw water
Accessory drive system
  • Serpentine belt
Recommended oil
  • NMMA Certified FCW 25W-40 Synthetic Blend
Engine guardian system
  • Knock control
  • Low drive lubricant
  • Low oil pressure
  • Low voltage
  • Low water pressure
  • Over-rev
Dimensions (L x W x H)
  • 29 x 26 x 21″ / 730 x 660 x 533 mm
Weight (engine only)
  • 515 lbs / 234 kg
Compatible drives
  • Alpha