Name: Isuzu BR-4HK1X
Brand: Isuzu
Availability: InStock

Overview#

The Isuzu BR-4HK1X is a 5.2-liter, 4-cylinder inline 4 diesel engine used in commercial and industrial generator applications in the 100-110 kW class. Turbocharged for reliable power density across standby and prime-rated duty cycles.

This engine powers generators from Airman, MQ Power, making it one of the more widely deployed prime movers in its power class for the commercial standby market.

Generators using this engine#

Airman EBOSS 125-65 (110 kW)
Airman SDG125 (110 kW)
MQ Power DCA-125 WhisperWatt (110 kW)

Found in these gensets

Generator models that ship with or are commonly paired with the Isuzu BR-4HK1X.

Airman

Airman EBOSS 125-65

Only integrated diesel-battery hybrid portable generator on the market — LTO batteries, unlimited paralleling, dramatic fuel and emissions reduction.

110 kW standby · Diesel · Liquid-cooled

Noise-sensitive urban construction, events, and sites where fuel cost and emissions matter.

125 kVA hybrid energy system with 65 kWh LTO battery storage. Diesel-battery hybrid for reduced fuel and emissions.

3-phaseconstructionrental-fleet

Airman

Airman SDG125

0.001% warranty claim rate, 110% fluid containment standard, 23.3-hr runtime at 100 kW — premium Isuzu-powered reliability for serious commercial and emergency standby applications.

110 kW standby · Diesel · Liquid-cooled

Full-size 100 kW portable for large commercial construction, emergency standby, data center temporary power, and infrastructure projects requiring overnight unattended operation.

100 kW prime diesel portable generator. Isuzu BR-4HK1X engine with 23.3-hour runtime, 110% fluid containment, and switchable output.

Tier 4 Final3-phaseconstructionrental-fleet

MQ Power

MQ Power DCA-125 WhisperWatt

WhisperWatt 125 kVA — 66 dBA at 7m, Isuzu BR-4HK1X 5.2L, 169-gal tank for 24-hr runtime at full load. DEF/SCR Tier 4 Final.

110 kW standby · Diesel · Liquid-cooled

Large portable at 100 kW prime. Diesel at 7.11 gph, 169-gal tank minimizes refueling, commercial backup and large events.

125 kVA (100 kW prime) portable diesel generator. Mid-large WhisperWatt Super-Silent for commercial construction, events, and emergency power.

Tier 4 Final3-phaseconstruction-largerental-fleet

Overview#

Generators using this engine#

Found in these gensets

Airman EBOSS 125-65

Airman SDG125

MQ Power DCA-125 WhisperWatt

Need service for the Isuzu BR-4HK1X?