Seven Marine 627
Seven Marine introduced its new high-performance outboard, the 627, at the 2015 Miami International Boat Show. In besting its already impressive 557 by 70 horsepower (while using the same GM LSA 6.2-liter supercharged block), Seven Marine continues to carry the crown of “world’s most powerful outboard.”
See more powerful boat engines from Seven Marine.
Seven Marine 557
The previous holder of the “world’s most powerful outboard” title, the 557 had the boating industry abuzz when it was unwrapped at the 2011 Miami International Boat Show. GM’s 6.2 L S/C LSA V8 from the Cadillac CTS-V provides the foundation of the motor that’s rated at 557 horsepower and 550 pound-feet of torque.
Check out this amazing video of quad 557s screaming across the water!
The Mercury Racing 400R outboard is a screamer — wide-open throttle range is 6,400 to 7,000 rpm — aimed at owners who put performance first.
Learn more about the 400R and Verado 350.
Mercury Racing 1550
Mercury Racing recently debuted its most powerful consumer engine to date in the 1550. This sterndrive features dual calibration technology where the user can get all 1,550 horsepower by running 112 AKI race fuel, or run 91 octane fuel and have 1,350 horsepower on tap.
See more powerful boat engines from Mercury Racing.
Kawasaki 310R
300+ horsepower is fun when it’s hanging off the transom. When it’s installed within the body of Kawasaki’s 310R PWC it’ll have you grinning from ear to ear. The supercharged, inline four-cylinder produces 310 horsepower, and gets the Ultra 310LX and 310R across the water fast.
See more Kawasaki performance models.
Caterpillar C32
Caterpillar Marine’s C32 is a V-12, four-stroke diesel that’s capable of providing up to 1,900 horsepower. The 32.1 L engine is turbocharged and aftercooled.
Cummins QSK60
Cummins debuted its QSK60 built for recreational use at the 2015 Miami International Boat Show. This 60-liter, turbocharged engine offers power ratings between 2,000 and 2,700 horsepower.
See more powerful boat engines from Cummins.
Cummins QSM11
The QSM11 from Cummins is an inline, six-cylinder diesel with 10.8 L of displacement. It’s capable of producing 300-715 horsepower and 1,160-1,750 pound-feet of torque. You can find the QSM11 on many express cruisers and sportfishing boats today.
See more powerful boat engines from Cummins.
Volvo Penta D13-900
The Volvo Penta D13-900 is an inline, six-cylinder diesel that produces 900 horsepower. It features dual-stage turbo technology, and is currently Volvo Penta’s most powerful engine for pleasure craft.
See more powerful boat engines from Volvo Penta.
MTU 16V 2000 M96
MTU unveiled its new Series 2000 M96 engine at the 2014 Fort Lauderdale International Boat Show, and show-goers could experience its 2,600 horsepower firsthand aboard a Viking 92EB equipped with twin M96s. The 16-cylinder, 26.9L M96 features sequential turbocharging.
LEHR LP25
LEHR’s 25-horsepower LP25 is currently the most powerful propane-powered outboard on the market.
See more powerful boat engines from LEHR.
ReGen Nautic 300
A 300-horsepower outboard might not seem too special, but what if it’s electric? ReGen Nautic’s 300 is built uses brushless electric motors and electronic controllers instead of gasoline powerheads.
See more powerful boat engines from ReGen Nautic.
Yamaha F200
Yamaha’s F200 makes our list due to its impressive power-to-weight ratio. The F200 is currently the lightest four-stroke outboard in its class, weighing in at 487 pounds.
See more power boat engines from Yamaha.
Honda BF2.3
Another outboard that features impressive performance due to its light weight. The Honda BF2.3 checks in at less than 30 pounds!
See more powerful boat engines from Honda.
Suzuki DF15A
Another portable outboard with a good power-to-weight ratio, the Suzuki DF15A offers 15-horsepower and weighs less than 100 pounds.
See more powerful boat engines from Suzuki.
