Mercury lists four MerCruiser inboard engines on its website, delivering 300, 320, 375 and 425 horsepower. These V-8 engines take regular, unleaded, 87-octane gasoline. The company lists four stern-drive engines, ranging from 300 to 600 horsepower. The company also offers MercCruiser diesel options that have lower horsepower ratings.
The high-output, 8.2-liter, gasoline inboard engine generates up to 425 horsepower and has a maximum revolution-per-minute rating of 4,400 to 4,800. The other 8.2-liter gas engine, a racing engine, generates 375 horsepower and up to 4,600 rpm. The 6.2-liter inboard MerCruiser produces 320 horsepower and up to 5,000 rpm. The 5.7-liter inboard MerCruiser engine generates 300 horsepower and up to 5,000 rpm. These engines come with multipoint electronic fuel injection, and the racing engine comes with either multipoint or sequential fuel injection.
Mercury's MerCruiser line includes four stern-drive motors in gasoline and diesel. The Bravo 1 stern drive gas motor produces up to 600 horsepower, while the Bravo 1 diesel generates 370 horsepower. The gasoline Bravo 2 generates 450 horsepower, and the diesel produces 370 horsepower. The Bravo 3 stern-drive engine generates 525 horsepower for gasoline and 370 for diesel. The Alpha 1 produces 300 horsepower for gas and 150 for diesel.