Haifeng Machinery

Detroit Diesel 12V-149 vs Detroit Diesel 12V-71N Industrial

Compare Detroit Diesel 12V-149 and Detroit Diesel 12V-71N Industrial by recorded output, operating duty, frequency and engine specifications. Their listed displacements are 29.3 L and 14 L, respectively. Start with the same duty and frequency, then check each model’s source and package conditions. These records alone do not establish interchangeability.

SpecificationDetroit Diesel 12V-149Detroit Diesel 12V-71N Industrial
Standby electrical (50 Hz)Not listedNot listed
Prime electrical (50 Hz)Not listedNot listed
Standby electrical (60 Hz)Not listedNot listed
Prime electrical (60 Hz)Not listedNot listed
Displacement29.3 L14 L
ConfigurationV12V12
Cylinders1212
Recorded engine speedNot listedNot listed
FuelDieselDiesel
CoolingLiquid-CooledLiquid-Cooled
Recorded emissions classificationUnregulatedUnregulated
Dry weightNot listedNot listed
OriginUnited StatesUnited States

Compare matching ratings

Read across a row to compare the same operating duty and frequency. kWe is electrical output; mechanical kW is power at the engine shaft. kVA is apparent electrical power and is shown only when kWe is missing, without converting it. “Not listed” means the record lacks that rating, not zero output. Continuous and prime duties are kept separate. Check source documents, units and site conditions before comparing values.

An emissions classification in the catalog is not proof of certification for your engine or installation. Confirm the exact model, applicable documents and generator configuration.

Detroit Diesel 12V-149: Review the model record and available supporting documents

Detroit Diesel 12V-71N Industrial: Review the model record and available supporting documents

Choosing between Detroit Diesel 12V-149 and Detroit Diesel 12V-71N Industrial

Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing.