4012-46TWG2A Diesel Engine <br> 1250 kVA @ 1500 RPM

4012-46TWG2A Diesel Engine
1250 kVA @ 1500 RPM



The 4012-46TWG engine has been developed using the latest engineering techniques and builds on the strengths of the already very successful 4012 Series family and addresses today’s uncompromising demands within the power generation industry. Developed from a proven heavy-duty industrial base these products offer superior performance and reliability. The 4012-46TWG2A is a turbocharged and air-to-water charge-cooled, 12 cylinder diesel engine which offers a choice of temperate or tropical cooling. Its premium features provide exceptional power-to-weight ratio resulting in exceptional fuel consumption. The overall performance and reliability characteristics makes this one of the prime choices for today’s power generation industry.



  • Number of cylinders : 12 60º Vee form
  • Bore and stroke 160 x 190 mm 6.3 x 7.5 in
  • Displacement 45.842 litres 2797 in3
  • Aspiration Turbocharged and air to water charge cooled
  • Cycle 4 stroke
  • Combustion system Direct injection
  • Compression ratio 13.6:1
  • Rotation Anti-clockwise, viewed from flywheel end
  • Total lubricating capacity 177 litres 46.7 US gal
  • Cooling system Water-cooled
  • Total coolant capacity 196 litres 51.7 US gal / 201 litres 53 US gal



Economic power

  • Individual 4 valve per cylinder give optimised gas flows, while unit fuel injectors ensure ultra fine fuel atomisation and hence controlled rapid combustion for efficiency and economy
  • Commonality of components with other engines in the 4000 Series family allows reduced parts stocking levels for the end users

Reliable power

  • Developed and tested using latest engineering techniques
  • Piston temperatures are controlled by an advanced gallery jet cooling system
  • All engines are tolerant of a wide range of temperatures without derate
  • Service is provided through the extensive Perkins network of distributors and dealers worldwide

Clean, efficient power

  • Exceptional power to weight ratio and compact size for easier transportation and installation
  • Designed to provide excellent service access for ease of maintenance
  • Engines designed to comply with major international standards
  • Low gaseous emissions for cleaner operation

Product support

  • Perkins actively pursues product support excellence by ensuring our distribution network invest in their territory – strengthening relationships and providing more value to you, our customer
  • Through an experienced global network of distributors and dealers, fully trained engine experts deliver total service support around the clock, 365 days a year. They have a comprehensive suite of web based tools at their fingertips covering technical information, parts identification and ordering systems, all dedicated to maximising the productivity of your engine
  • Throughout the entire life of a Perkins engine, we provide access to genuine OE specification parts and service. We give 100% reassurance that you receive the very best in terms of quality for lowest possible cost .. wherever your Perkins powered machine is operating in the world


Air inlet

  • Mounted air filters and turbochargers

Fuel system

  • Direct fuel injection system with fuel lift pump
  • Governing to ISO 8528-5 class G3 with isochronous capability
  • Full-flow spin-on fuel oil filters

Lubrication system

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

Cooling system

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

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

Flywheel and housing

  • Flywheel to SAE J620 size 18
  • SAE 00 flywheel housing

Optional equipment

  • Choice of temperate or tropical radiators available dependant on operational cooling requirements
  • Fuel oil cooler integral to the radiator assembly
  • Immersion heater with thermostat


Full Product Specs