Heavy-Duty Starter Motor Series for Commercial & Off-Road Vehicles

220kW EP220 3-in-1 e-drive with ASIL D safety & 4,800Nm wheel torque. Custom R&D by Dowway Vehicle—China’s EV powertrain manufacturer.
Type Left and Right Hand Drive
Technical Custom Available
Standard China, Euro, US
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Heavy-duty starter motor with silver housing, black end caps, and visible planetary gear housing; shown on white background

Parameter Specification
Technology Planetary Gear Reduction
Voltage Support 12V / 24V
Rated Power Range 2.5 kW – 9.5 kW
Compatible Engine Displacement 2L – 17L (single unit); ≥20L with parallel use
Stator Diameter Range 81mm – 125mm
Waterproof Rating IPX7
Operating Temperature Range -40°C to +105°C
Applications Buses, Trucks, Construction Machinery, Mining Equipment, Marine Engines, Agricultural Machinery
Design Features Compact, High-Torque, Corrosion-Resistant Housing
The Heavy-Duty Starter Motor Series is a high-performance starting solution engineered for commercial vehicles, construction machinery, mining equipment, marine vessels, and agricultural machinery. Designed to operate under extreme conditions, it features planetary gear reduction technology, which delivers high torque at low speeds while minimizing size and weight—critical for compact engine compartments in large vehicles.
The series supports both 12V and 24V electrical systems, making it versatile for light commercial vehicles (12V) and heavy-duty industrial applications (24V). The rated power ranges from 2.5kW to 9.5kW, with stator diameters between 81mm and 125mm, allowing scalable performance based on engine displacement. A single unit can start engines ranging from 2L to 17L, while multiple units can be connected in parallel to meet the demands of 20L or larger engines—ideal for heavy-duty diesel trucks, mining haulers, and marine propulsion systems.
Operating reliably across an extreme temperature range of -40°C to +105°C, the starters are built for global deployment—from Arctic winter environments to desert heatwaves. The IPX7 waterproof rating ensures protection against temporary immersion in water, making them suitable for use in wet, dusty, or muddy conditions typical of construction sites, mines, and off-road terrains.
The robust mechanical design includes high-strength copper windingsdurable carbon brushes, and precision-engineered gears that resist wear even under repeated high-load starts. The compact structure reduces space requirements in tight engine bays, while the optimized cooling system prevents overheating during prolonged cranking cycles. Optional remote control interfaces allow integration with modern vehicle management systems, enabling diagnostics, fault reporting, and remote start functionality.
Engineered for durability: withstands vibrations up to 5g RMS and shock loads of 30G. Manufactured under IATF 16949 with ISO 9001 quality compliance. All units undergo 1,000-hour accelerated life testing, thermal cycling validation, and full-load endurance tests. Supports white-label customization with rapid NPI cycles (14 days) and regional compliance packages (EU ECE R10, China CCC, U.S. DOT).
Type

Left and Right Hand Drive

Technical Custom

Available

Standard

China, Euro, US

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