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Caterpillar 3406 vs Cummins 6LTAA9.5-G3

The Caterpillar 3406 and Cummins 6LTAA9.5-G3 are both diesel generator engines in a similar power class. Both are rated at roughly 400 kVA. Displacement is 14.6 L versus 9.5 L. The table below compares their full specifications side by side.

SpecificationCaterpillar 3406Cummins 6LTAA9.5-G3
Headline rating400 kVA400 kVA
Standby (50 Hz)320 kWe320 kWe
Prime (50 Hz)290 kWe256 kWe
Standby (60 Hz)400 kWe285 kWe
Prime (60 Hz)365 kWe228 kWe
Displacement14.6 L9.5 L
ConfigurationL6L6
Cylinders66
Rated speed1,500 / 1,800 RPM1,500 / 1,800 RPM
FuelDieselDiesel
CoolingLiquid-CooledLiquid-Cooled
EmissionsU.S. EPA Tier 2Unregulated
Dry weight——
OriginUSAChina
Caterpillar 3406 full specs →Cummins 6LTAA9.5-G3 full specs →

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