The Generator EngineEncyclopedia

Caterpillar G3412 vs Perkins 4008TESI

The Caterpillar G3412 and Perkins 4008TESI are both natural gas generator engines in a similar power class. Both are rated at roughly 625 kVA. Displacement is 27 L versus 30.5 L. The table below compares their full specifications side by side.

SpecificationCaterpillar G3412Perkins 4008TESI
Headline rating625 kVA625 kVA
Standby (50 Hz)
Prime (50 Hz)500 kWe500 kWe
Standby (60 Hz)
Prime (60 Hz)
Displacement27 L30.5 L
ConfigurationV12V8
Cylinders128
Rated speed1,500 RPM1,500 RPM
FuelNatural GasNatural Gas
CoolingLiquid-CooledLiquid-Cooled
EmissionsU.S. EPA StationaryUnregulated
Dry weight
OriginUnited StatesUnited Kingdom