Engines

Marine outboards and jet drives

Spark-ignition marine engines: outboards, sterndrives and personal watercraft. EPA certification records cover 2,409 engine families from 19 manufacturers; Mercury Marine has the most, with 424.

Manufacturers19
Engine families2,409
ManufacturerFamiliesModel yearsPower range
Mercury Marine4242011–20262–1133 kW
Yamaha3912011–20262–328 kW
BRP (Bombardier Recreational Products)2572011–202611–239 kW
Honda1682012–20262–261 kW
Suzuki1652012–20272–257 kW
Tohatsu1442011–20263–110 kW
Suzhou Parsun Power Machine1282011–20262–221 kW
Pleasurecraft Marine Engine1072011–2027205–465 kW
Tennessee Propulsion Products962011–2026210–388 kW
KEM Equipment952011–202693–444 kW
Ilmor Engineering902012–2026241–487 kW
Volvo Penta892012–2026149–321 kW
Hangzhou Hidea Power Machinery832011–20252–44 kW
Marine Power Holding402012–202646–456 kW
Onyx Systems362012–20222–18 kW
Kawasaki322011–2027118–228 kW
Malibu Boats262019–2026288–477 kW
Briggs & Stratton242012–202622–28 kW
MSR Engines142016–20267–8 kW

Engine calculators

Torque, power and BMEPPower from torque and RPM · Torque from power and RPM · Brake mean effective pressure (BMEP)Engine displacementDisplacement from bore, stroke and cylinders · Bore from displacement and stroke · Stroke from displacement and boreBSFC and thermal efficiencyBSFC from power and fuel flow · Fuel flow from power and BSFC · Thermal efficiency from BSFCCompression ratioStatic compression ratio · Chamber volume for a target compression ratio · Theoretical compression pressurePiston speedMean piston speed · Maximum RPM for a piston speed limit · Rod ratio, piston velocity and acceleration

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