BoatTest.com MerCruiser
350 MAG MPI (300-hp)

Send to a Friend
MerCruiserLogo.jpg BoatTest.Com  Video Library
 
Already a member?
Login with your email address

 
First Name:* 
Last Name:* 
Email:* 
Zip Code:* 
Country:* 
Boat Size:*  Under 30 Feet Over 30 Feet
 


Related Videos
Only Builder in Class Up in 2007 (Cobalt)
Only Builder in Class Up in 2007 (Cobalt)

Cobalt Was the Only Builder in Class Up in 2007. Paxson St. Clair CEO of Cobalt talks to BoatTEST.c...
Cobalt Will Offer Both Merc and Volvo Joystick Systems (Cobalt)
Cobalt Will Offer Both Merc and Volvo Joystick Systems (Cobalt)

Paxson St. Clair CEO of Cobalt says the company will offer both MerCruiser and Volvo Penta joystic...
Extra Cost with SeaCore  (MerCruiser)
Extra Cost with SeaCore (MerCruiser)

Kevin Grodzki president of MerCruiser talks to BoatTEST about SeaCore's cost....
Cooling System Maintenance: 496 and 8.1L Engines (MerCruiser)
Cooling System Maintenance: 496 and 8.1L Engines (MerCruiser)

Cooling System Maintenance: 496 and 8.1L Engines...
Understanding Electrical Systems (MerCruiser)
Understanding Electrical Systems (MerCruiser)

Understanding Electrical Systems ...
Understanding Cooling Systems (MerCruiser)
Understanding Cooling Systems (MerCruiser)

Understanding Cooling Systems ...
Inside Look: Bravo Two Drive (MerCruiser)
Inside Look: Bravo Two Drive (MerCruiser)

Inside Look: Bravo Two Drive ...
Inside Look: Bravo One Drive (MerCruiser)
Inside Look: Bravo One Drive (MerCruiser)

Inside Look: Bravo One Drive ...
Inside Look: Alpha One Drive (MerCruiser)
Inside Look: Alpha One Drive (MerCruiser)

Inside Look: Alpha One Drive...
Inside Look: Alpha One Drive (MerCruiser)
Inside Look: Alpha One Drive (MerCruiser)

Inside Look: Alpha One Drive ...
Mercury Racing History Video (MerCruiser)
Mercury Racing History Video (MerCruiser)

Mercury Racing History Video ...
Cooling System Maintenance: 496 and 8.1L Engines (MerCruiser)
Cooling System Maintenance: 496 and 8.1L Engines (MerCruiser)

Cooling System Maintenance: 496 and 8.1L Engines ...
MerCruiser Marine Interview (MerCruiser)
MerCruiser Marine Interview (MerCruiser)

Kevin Grodzki Interview on MerCruiser Marine...
Pat Mackey's Mercury Legend (Mercury)
Pat Mackey's Mercury Legend (Mercury)

Pat Mackey talks about his accomplishments at Mercury Marine. ...
When Will Merc Have a 5-Year Warranty as Standard? (Mercury)
When Will Merc Have a 5-Year Warranty as Standard? (Mercury)

Jeff Hammond editor-in-chief of BoatTEST.com speaks with Pat Mackey about his thoughts on 5 year wa...
Why was SeaCore So Long in Development?  (Mercury)
Why was SeaCore So Long in Development? (Mercury)

Mercury Marine president, Pat Mackey speaks with Jeff Hammond of BoatTEST.com on the development of...
Impact of Employee Costs on Future Engine Prices (Mercury)
Impact of Employee Costs on Future Engine Prices (Mercury)

Mercury Marine president, Pat Mackey speaks with Jeff Hammond of BoatTEST.com on the impact of empl...
What is Happening with Boat and Engine Pricing? (Mercury)
What is Happening with Boat and Engine Pricing? (Mercury)

Mercury Marine president, Pat Mackey speaks with Jeff Hammond of BoatTEST.com on the topic of boat ...
How did MerCruiser Beat Volvo with Sterndrive Joystick?  (Mercury)
How did MerCruiser Beat Volvo with Sterndrive Joystick? (Mercury)

Mercury Marine president, Pat Mackey speaks with Jeff Hammond of BoatTEST.com about how MerCruiser ...
Mercury Outboards and Saltwater Applications (Mercury)
Mercury Outboards and Saltwater Applications (Mercury)

Mercury Marine president, Pat Mackey speaks with BoatTEST about Mercury outboards and saltwater app...
Making a Supercharged Outboard Fuel Efficient.   (Mercury)
Making a Supercharged Outboard Fuel Efficient. (Mercury)

Mercury Marine president, Pat Mackey speaks with BoatTEST about making a supercharged outboard fuel...
Interview with Mercury President (Mercury Marine)
Interview with Mercury President (Mercury Marine)

Mercury Marine president Pat Mackey talks about the company's global distribution....
Small Craft Binnicle Control (Mercury Marine)
Small Craft Binnicle Control (Mercury Marine)

Review on Mercury Marine's small craft digital binnicle control....
Interview with Pat Mackey (Mercury Marine)
Interview with Pat Mackey (Mercury Marine)

Mercury Marine president Pat Mackey talks about the changes going on and what people can expect dow...
Earthrace Interview Miami 2007  ()
Earthrace Interview Miami 2007 ()

Interview with Pete Bethune the owner and skipper of Earthrace at the Miami Boat show 2007. This wa...
Skyhook Technology (Formula)
Skyhook Technology (Formula)

What is MerCruiser's "Skyhook" technology? ...
Axius Technology (Formula)
Axius Technology (Formula)

The technology behind the Axius system. ...
Axius Joystick  (Formula)
Axius Joystick (Formula)

Interview with Louis Posner, Business Development Manager at Mercury MerCruiser talks to us about t...
Skyhook Now Available  (Formula)
Skyhook Now Available (Formula)

Skyhook is now available on MerCruiser Axius Joystick Systems. ...
Axius Joystick (Formula)
Axius Joystick (Formula)

Formula Jumps on Axius Joystick...
Moving Towards Family-Oriented Boats  (Fountain)
Moving Towards Family-Oriented Boats (Fountain)

Is Fountain really moving towards family-oriented designs? Reggie fills us in. ...
MerCruiser Propeller Commerical (MerCruiser)
MerCruiser Propeller Commerical (MerCruiser)

MerCruiser takes you through design, manufacturing and performance of their propellers....
MerCruiser Scorpion 350 (MerCruiser)
MerCruiser Scorpion 350 (MerCruiser)

Captain Rob Smith takes us on tour of the Scorpion 350 and a detailed look at the catalytic convert...
SeaCore is Slowly Being Accepted (MerCruiser)
SeaCore is Slowly Being Accepted (MerCruiser)

Kevin Grodzki president of MerCruiser talks to BoatTEST about its SeaCore technology slowly being a...
No Demand for Gas Engines with Pod Drives  (MerCruiser)
No Demand for Gas Engines with Pod Drives (MerCruiser)

Kevin Grodzki president of MerCruiser talks to BoatTEST about the lack of demand for gas engines wi...
Joystick Technology Coming to Outboards Next? (MerCruiser)
Joystick Technology Coming to Outboards Next? (MerCruiser)

Kevin Grodzki president of MerCruiser talks about joystick technology coming to the inboard market ...
MerCruiser SmartCraft Review  (Mercury)
MerCruiser SmartCraft Review (Mercury)

Capt. Robert Smith of BoatTEST.com reviews Mercury's new SmartCraft technology. ...
When is the Joystick Coming to Outboards? (Mercury)
When is the Joystick Coming to Outboards? (Mercury)

Mercury Marine president, Pat Mackey speaks with Jeff Hammond of BoatTEST.com on whether he thinks ...
What is the Future of 2-Stroke Outboards  (Mercury)
What is the Future of 2-Stroke Outboards (Mercury)

Mercury Marine president, Pat Mackey speaks with Jeff Hammond of BoatTEST.com about the future of 2...
Mercury's Chinese Operations (Mercury)
Mercury's Chinese Operations (Mercury)

Mercury Marine president, Pat Mackey speaks with Jeff Hammond of BoatTEST.com about building engine...
Has the Verado Been Accepted by Bass Fishermen? (Mercury)
Has the Verado Been Accepted by Bass Fishermen? (Mercury)

Mercury Marine president, Pat Mackey speaks with BoatTEST about the Verado outboard being used by b...
Why Develop a Supercharged Outboard Motor? (Mercury)
Why Develop a Supercharged Outboard Motor? (Mercury)

Mercury Marine president, Pat Mackey speaks with BoatTEST about developing a supercharged outboard....
350 MAG MPI (300-hp) 350 MAG MPI (300-hp)
Big-time performance in a small-block V-8. That's what you get with the 350 MAG MPI. You'll enjoy outstanding top-end throttle response, easy starts and excellent day-to-day operation, compliments of the MEFI 3 Electronic Control Module with multiport fuel injection.

Fast Facts
Propshaft HP 300-hp
Configuration V8
Displacement 5.7L /350 CID
Bore & Stroke 4.00
Fuel System Multi-Point Electronic Fuel Injection
Base Engine Weight 946 lbs.
Length/Width/Height 32 x 30 x 22
Max RPM@WOT 4800-5200
Warranty 3-year

Key Features

  • Compatible Drives: Alpha, Bravo One, Bravo Two, Bravo Three
  • Exclusive quick oil drain system that eliminates the need for a pump, simplifying routine maintenance.
  • Ceramic- and EDP-coated exhaust elbows for outstanding corrosion resistance.
  • Multipoint manual water drain system, which makes winterizing easy.
  • Exclusive remote oil filter located atop the engine, simplifying routine maintenance.
  • 70-amp alternator to handle the demands of today’s state-of-the-art electronic components.
  • Water-separating fuel filter that prevents water from entering the fuel system.
  • Compact hydraulic steering available for pontoon applications, which is offered as a factory-installed option on the Alpha drive packages.
  • Exclusive audio alarm system that warns you of low oil pressure, high water temperature and excessive transmission temperature.
MerCruiser 350 MAG MPI (300-hp)
Propshaft HP 300-hp
Max RPM@WOT 4800-5200
Dry Weight 946 lbs.
Length/Width/Height(in) 32 x 30 x 22
Displacement (liters/cu.in) 5.7L /350 CID
Cylinders/Configuration V8
Bore & Stroke 4.00
Alternator Output Rating 65 amp
Fuel Type Gasoline
Fuel System Multi-Point Electronic Fuel Injection
Exhaust System Iron Manifold w/ Ceramic Coated Dry-Joint Exhaust
Ignition System Crank-fired High Voltage Switch w/Knock Control
Cooling System Thermostatically Controlled, Raw Water
Engine Image

MerCruiser 350 MAG MPI (300-hp)

Our latest V8 Bravo Multiport Injection (MPI) sterndrive models are now available with optional Digital Throttle and Shift (DTS). DTS eliminates all helm maintenance and provides silky-smooth shifts f

Have you used this engine? Give us your feedback/comments.
E. Hoisington 5/21/2009 11:09:32 PM
i have a 350 mag mpi and I am trying to find the ignition switch diagram to start the motor out of the boat since i bought it that way. I have a nine wire harness from the engine to the dash. red, purple,gray,brown/white tracer,blue,biege,biege/lt.blue tracer, black, yellow /red tracer. I need to find out what goes to the switch and the efi and who they are hooked up to run the engine safely.