The HDEF90 EFI is a powerful mid-range new member of HIDEA’s flagship EF family. Fully inheriting the flagship 1832CC large-displacement four-cylinder technical platform, it delivers a rated output of 66.2kW (90HP). It perfectly balances four-cylinder large displacement and lightweight structure, integrating strong power, low fuel consumption, high durability and easy handling. Widely applicable for premium leisure cruising, professional water operation and commercial water transportation, it redefines the performance benchmark for mid-power outboard motors.
Why Choose the HDEF90 EFI?
Large displacement design with excellent power reserve: Equipped with a 1832CC large-displacement engine, it boasts a larger displacement than peers in the same category. Combined with high-thrust gear ratio and reverse exhaust release technology, it delivers ample cruising power reserve and sufficient power margin, capable of handling high-frequency, heavy-load and continuous operating conditions for a long time.
SOHC, 16-valve design: Adopting the SOHC single overhead camshaft structure, it enables stable and precise valve control across the full speed range. The 4-valves-per-cylinder design improves intake and exhaust efficiency and achieves outstanding engine response performance.
Equipped with EFI electronic fuel injection system for superior fuel economy: Featuring an automotive-grade electronic fuel injection system to realize full fuel atomization and high combustion efficiency, it delivers remarkable fuel-saving performance. It maintains excellent fuel consumption under intensive continuous operation and greatly reduces the long-term operating cost of the equipment.
Electronic throttle for quicker acceleration response: Fitted with the ETV electronic throttle control system, it transmits throttle signals accurately and provides direct acceleration feedback. It matches power in real time according to operating conditions, greatly improving control precision and running smoothness.
Enhanced quiet intake structure for stable operation: The single-hole throttle reduces intake resistance to guarantee power response during acceleration and high-speed working conditions. The intake manifold and intake silencer are made of high-strength synthetic materials to effectively suppress operating noise and maintain excellent stability even at low-speed cruising.
Ocean-grade anti-corrosion technology with high anti-corrosion level: It uses high anti-corrosion grade aluminum alloy materials. Through multiple anti-corrosion processes including oxidation and electrophoretic coating, it meets ocean-grade anti-corrosion standards, effectively resisting corrosion losses in complex water environments for higher durability and reliability of the whole unit.
Multiple configurations for flexible selection: It supports both remote control and tiller operation modes, compatible with various boat types and working scenarios. It can meet customized power demands for high-intensity commercial applications with wide scenario coverage and strong installation adaptability.
Technical Parameters
ModelRotation Speed (RPM)Rated Power (KW)Engine TypeNumber of CylindersEngine Displacement (CC)Bore × StrokeWeight (KG)Shifting ModeIgnition SystemCooling SystemStarting MethodOperation ModeColorDrive Shaft
| HDEF90 |
| 5000-6000 |
| 66.2 |
| 4-takt |
| 4 |
| 1832 |
| 81×88.9 |
| L:162 XL:166 |
| Forward Gear Neutral Reverse |
| ECM |
| Water-cooled |
| Electric Start |
| Remote Control Rear Operation |
| Black |
| Long Shaft Extra Long Shaft |
