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Perkins 400 Series electric power (EP) engines are the ideal solution if you're looking for reliable, economical power from a compact unit. Our 402 range is the smallest of all. These 0.5 litre, 2 cylinder engines are robust and efficient and can fulfil your power generation needs with minimal operating costs. Engines meet EU Stage IIIA/U.S. EPA Tier 4 interim and the more stringent Tier 4 Final emissions standards. Impressive cold-start capabilities even in the most demanding conditions make them an excellent choice for less regulated territories.


0.51 litre

4.8-9 kVA

The 402D-05G is a naturally aspirated, indirect injection engine that meets EU Stage IIIA/U.S. EPA Tier 4 interim emissions standards.

Power Rating

Mechanical Output** 5-10 kWm 5-10 kWm Less
Electrical Output** 5-10 kVA (4-8 kWe) 5-10 kVA (4-8 kWe) Less
Rated Speed 1800/3000/3600 rpm 1800/3000/3600 rpm Less

Emission Standards

Emissions EU Stage IIIA/U.S. EPA Tier 3 EU Stage IIIA/U.S. EPA Tier 3 Less


Bore 2.6 in 67.0 mm Less
Stroke 2.8 in 72.0 mm Less
Displacement 31.0 in³ 0.51 l Less
Aspiration Naturally aspirated Naturally aspirated Less
Rotation from Flywheel End Anti-clockwise Anti-clockwise Less
Cooling System Liquid Liquid Less
Total Coolant Capacity 0.7 gal (US) 2.5 l Less
Total Lubricating Capacity 0.5 gal (US) 2.0 l Less
Combustion System Indirect injection Indirect injection Less
Cycle 4 stroke 4 stroke Less
Compression Ratio 23.5:1 23.5:1 Less
Number of Cylinders 2 inline 2 inline Less


Note 1 Final dimensions dependent on selected options Final dimensions dependent on selected options Less
Note 2 ESE (1800 rpm) only - Emergency Stationary Equipment ESE (1800 rpm) only - Emergency Stationary Equipment Less

Engine Dimensions*

Height 20.6 in 523.0 mm Less
Length 16.0 in 407.0 mm Less
Width 14.6 in 371.0 mm Less
Dry Weight 160.9 lb 73.0 kg Less

Lower operating costs

The durability of the 402 range, its simple technology, ease of installation and warranty offering all combine to drive down your ownership costs. Oil and filter changes are 500 hours, dependent on load factor, which also trims your costs. As the 400 Series is built on a common engine platform, if you need to upgrade you can do so easily and affordably.

Small packages

When you need power and reliability in even the smallest application, you can trust the 400 Series EP engines to deliver. Our engineers have carefully designed every component to minimise space. Your engine can also be flexibly adapted to make installation and servicing even easier.

402D-05G Standard Equipment

Air inlet system
  • Mounted air filter

Control system
  • 12 volt electronic shut off solenoid (ESOS) energised to run
  • 12 volt starter motor and 12 volt 14 amp alternator with DC output
  • Glow plug cold start aid and heater/starter switch
  • Oil pressure and coolant temperature switches

Cooling system
  • Thermostatically-controlled system with belt driven coolant pump and pusher fan
  • Radiator and hoses supplied separately

Flywheel and flywheel housing
  • 1500/1800 rpm High inertia flywheel to SAE J620 Size 6½ Heavy Flywheel housing SAE 5 Long
  • 3000 rpm High inertia flywheel to SAE J620 Size 6½ Light Flywheel housing SAE 5 Short

Fuel system
  • Mechanically governed cassette type fuel injection pump
  • Split element fuel filter

Oil system
  • Wet steel sump with filler and dipstick
  • Spin-on full-flow lubricating oil filter