At 522hp (390kW), the 7.4L is the most powerful catalyzed production marine engine available today
The superior design and materials of Ilmor-developed internal components provide unsurpassed performance and parts reliability.
Forged steel crankshaft
Forged steel connecting rods
The naturally aspirated engine architecture provides more horsepower, better fuel economy, and longer parts durability than comparable supercharged engines.
The 7.4L conforms to EPA, CARB and EU emissions standards, producing nearly 70% lower Carbon Monoxide emissions than other gasoline engines of comparable horsepower – a benefit for wake surfers and boarders riding its massive wakes.
Each engine is hand built to the same quality standards as our IndyCar engines.
87 octane-compatible, offering the thrill of high-performance power without breaking the bank.
Sophisticated variable valve timing for overall enhanced performance – increased lower end torque and high RPM horsepower.
Number of Cylinders8
Power Rating390 kW @ 5800 RPM (522 HP)
Peak Torque524 ft-lbs @ 4400 RPM
Valve ConfigurationOverhead Valves (2 per cylinder)
Valve LiftersHydraulic Roller
Bore and Stroke106.299 x 104.77 mm
Bore Center111.76 mm
Engine Weight (with V-drive transmission)1085 lbs (492 kg)
Emissions ControlsCatalyst. 02 Sensor. ECU Controlled. OBD-M
Cylinder BlockCast Iron
Cylinder HeadCast Aluminum
Intake ManifoldCast Aluminum Upper and Lower
Exhaust ManifoldCast Iron
Connecting RodsForged Steel