The Mercruiser 4.5L V6 High Torque engine was developed exclusivley for Marine use, it is not a modified Automotive engine, designed by Mercury Marine from the ground up it has the largest displacement in its class. Higher displacement = less fuel & better bottom end power. 

The Best engines deserve the best installation, application engineering, drive, prop and gear ration selection, for the right advice and the best deals on the full range of Mercury Mercruiser engines contact the multi award winning team at Hitech Marine, Australia`s No:1 Mercruiser Repower Dealer.
Get the confidence, fuel economy and power to Go further and more often when you "Do it Once - Do it Right" with Hitech Marine 

Check out some of the boats Hitech Marine have Repowered with the Mercruiser 4.5L V6 Engine...


Blaxell Daytona Mercruiser V6 200HP Performance summary

Baxwell Daytona Powered with a Mercruiser 4.5L 200hp V6 fuel injected engine and Alpha Drive ...

For the Right Advice & the best Mercruiser Engine deals, Do it Once - Do it Right with the certified team at...

Hitech Marine Mercruiser Engine Experts

Dedicated to Quality – First time Every time


HP / kW
  • 200 / 149
Maximum RPM (WOT)
  • 4400 - 4800
Engine type
  • V6, 2-valve/cylinder pushrod
Displacement (L)
  • 4.5
Bore and stroke
  • 4.0 x 3.6" / 102 x 92 mm
Fuel requirement
  • Unleaded 91 RON Minimum
Fuel delivery system
  • Computer controlled Multi-Port Electronic Fuel Injection (MPI)
Air induction
  • Performance-Tuned Scroll Intake Manifold
  • SmartCraft PCM 112 Digital Inductive
Alternator amp / Watt
  • 70 amp / 882 watt (Belt-Driven)
Water drain system
  • Easy Drain "Season Extender"
Exhaust system
  • Through prop
Cooling system
  • Water cooled with thermostat; FWC available as factory option
Lubrication system
  • Integrated wet sump
Recommended oil
  • NMMA Certified FCW 25W-40 Synthetic Blend
Dimensions (L x W x H)
  • 28 x 30 x 22" / 696 x 740 x 559 mm
Weight (engine only)
  • 756 lbs / 343 kg
Compatible drives
  • Alpha


Horse Power (hp)
  • 75
Fuel Type
  • Petrol
Download Mercruiser 4.5 Install Drawing
Download Alpha Install Drawings
Download Mercruiser 4.5L V6 Brochure