The Isuzu 4LE2T is a 2.2-liter, 4-cylinder inline 4 diesel engine used in commercial and industrial generator applications in the 20-22 kW class. Turbocharged for reliable power density across standby and prime-rated duty cycles.
This engine powers generators from Airman, Atlas Copco, Echo, Hipower Systems, MQ Power, making it one of the more widely deployed prime movers in its power class for the commercial standby market.
Generator models that ship with or are commonly paired with the Isuzu 4LE2T.
Airman
Airman EBOSS 25-25
Only integrated diesel-battery hybrid portable generator on the market — LTO batteries, unlimited paralleling, dramatic fuel and emissions reduction.
22 kW standby · Diesel · Liquid-cooled
Noise-sensitive urban construction, events, and sites where fuel cost and emissions matter.
25 kVA hybrid energy system with 25 kWh LTO battery storage. Diesel-battery hybrid for reduced fuel and emissions.
3-phaseconstructionrental-fleet
Airman
Airman SDG25
0.001% warranty claim rate, 110% fluid containment standard, 32-hr runtime — the longest in the 20 kW portable class. Isuzu turbo diesel with lowest total cost of ownership.
22 kW standby · Diesel · Liquid-cooled
Workhorse 20 kW portable for construction sites, film production, and event power where extended runtime and environmental compliance eliminate downtime and aftermarket add-ons.
20 kW prime diesel portable generator. Isuzu-powered with 32-hour runtime, 110% fluid containment, and switchable single/three-phase output.
Tier 4 Final3-phaseconstructionrental-fleet
Airman
Airman SDG25SV V-Pump
Industry-leading 0.001% warranty claim rate with 110% fluid containment standard — no separate secondary containment needed on CA sites.
22 kW standby · Diesel · Liquid-cooled
Rental fleets and construction sites requiring ultra-reliability and environmental compliance.
25 kVA (20 kW prime) portable diesel generator with integrated VFD for motor starting and dewatering.
Tier 4 Final3-phaseconstructionrental-fleet
Echo
Echo DGK20FS
Patented SimulPhase — simultaneous single and three-phase output from one unit, eliminating step-down transformers on mixed-load sites.
22 kW standby · Diesel · Liquid-cooled
Mixed-load construction sites where SimulPhase eliminates transformer cost, and rental fleets discovering Shindaiwa heritage.
20 kW single-phase portable diesel generator with SimulPhase technology.
Tier 4 FinalSingle-phaseconstructionrental-fleet
Echo
Echo DGK25F
Patented SimulPhase — simultaneous single and three-phase output from one unit, eliminating step-down transformers on mixed-load sites.
22 kW standby · Diesel · Liquid-cooled
Mixed-load construction sites where SimulPhase eliminates transformer cost, and rental fleets discovering Shindaiwa heritage.
25 kVA portable diesel generator with SimulPhase technology. Built in Japan.
Tier 4 Final3-phaseconstructionrental-fleet
Hipower Systems
Hipower HRIW-25
Compact Isuzu-powered trailer generators — lightweight, fuel-efficient, and Tier 4 Final for California rental fleets.
22 kW standby · Diesel · Liquid-cooled
Small construction sites, outdoor events, and rental fleet applications needing 22 kW of mobile diesel power.
25 kVA (22 kW standby) mobile diesel generator with Isuzu engine. Tier 4 Final. Compact trailer unit for construction and rental fleets.
Tier 4 Final3-phaseconstructionrental-fleet
MQ Power
MQ Power DCA-25 WhisperWatt
WhisperWatt by Denyo — 65 dBA at 7m, quietest in class. Isuzu 4LE2T at 1800 RPM, 1.62 gph, switchable single/three-phase, Tier 4 Final.
22 kW standby · Diesel · Liquid-cooled
Rental fleet workhorse at 20 kW prime. Diesel at 1.62 gph, 41.7-gal tank for 25+ hr runtime, noise-sensitive job sites and events.
25 kVA (20 kW prime) portable diesel generator. Quiet WhisperWatt Super-Silent construction workhorse for rental fleets, job sites, and temporary power.
Tier 4 Final3-phaseconstructionrental-fleet
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