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The Perkins 4012 range packs a real performance punch, with 12 cylinders and 46 litre displacement providing all the power you need. The range's diesel ElectropaK engines are supplied complete with radiator and air cleaner, or as engine only. They provide 989-1600 kVA generator output, with exceptional power-to-weight ratios. The compact design of the engines makes them easy to transport and install.


46 litre

989-1600 kVA generator output

Designed for use in non-regulated territories

The 4012-46TWG ElectropaK engine is turbocharged and air-to-water chargecooled

Power Rating

Mechanical Output 833-1342 kWm 833-1342 kWm Less
Electrical Output 989-1600 kVA (791-1280 kWe) 989-1600 kVA (791-1280 kWe) Less
Rated Speed 1500/1800 rpm 1500/1800 rpm Less

Emission Standards

Emissions Unregulated Unregulated Less


Bore 6.3 in 160.0 mm Less
Stroke 7.5 in 190.0 mm Less
Displacement 2797.0 in³ 45.8 l Less
Aspiration Turbocharged and air-to-water charge cooled Turbocharged and air-to-water charge cooled Less
Rotation from Flywheel End Anti-clockwise Anti-clockwise Less
Cooling System Liquid Liquid Less
Total Lubricating Capacity 46.7 gal (US) 177.0 l Less
Cycle 4 stroke 4 stroke Less
Total Coolant Capacity 53.1 gal (US) 201.0 l Less
Compression Ratio 13.6:1 13.6:1 Less
Number of Cylinders 12 Vee 12 Vee Less
Combustion System Direct injection Direct injection Less

Engine Dimensions*

Minimum Width 70.1 in 1780.0 mm Less
Maximum Width 77.9 in 1978.0 mm Less
Minimum Dry Weight 11508.0 lb 5220.0 kg Less
Height 88.8 in 2255.0 mm Less
Maximum Dry Weight 11647.0 lb 5283.0 kg Less
Length 146.2 in 3714.0 mm Less


Economic and durable, the engines have excellent power-to-weight ratios, as well as outstanding load acceptance and improved emissions.

Commonality of components with other engines in the 4000 Series makes replacing parts or upgrading an easy process

ElectropaK diesel

The ElectropaK diesel engines in the 4012 range come complete with radiator and air cleaner. Models in the range are either turbocharged and air-to-air chargecooled or turbocharged and air-to-water chargecooled.

Giving 989-1880 kVA engine power, our 4012 range diesel engines include a model to suit all your power generation needs – prime or standby.

Engine-only options are also available.

Optional equipment

Options for your 4012 range diesel engines include:

•    Fuel oil cooler integral to the radiator assembly

•    Immersion heater with thermostat

4012-46TWG Standard Equipment

Air inlet system
  • Mounted air filter and turbochargers

Cooling system
  • Powder coated radiator comprising: water radiator; fuel oil cooling (optional); all pipes, hoses and clips; fan; pulleys; fan belts and safety guards
  • System designed for ambients up to 50ºC (122ºF)
  • Two twin thermostats

Electrical equipment
  • 24 volt starter motor and 24 volt alternator with integral regulator and DC output
  • Overspeed switch and magnetic pickup
  • Turbine inlet temperature shutdown switch
  • Twin high coolant temperate shutdown switches
  • Twin low oil pressure shutdown switches

Flywheels and flywheel housing
  • SAE 00 flywheel housing
  • SAE J620 size 18 flywheel

Fuel system
  • Direct fuel injection system, fuel lift pump
  • Full flow spin-on fuel oil filters

  • Governing to ISO 8528-5 class G3 with isochronous capability

Oil system
  • Engine jacket water/lubricating oil temperature stabiliser
  • Full flow spin-on oil filters
  • Wet sump with filler and dipstick