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Kubota D1503

Engines

Kubota D1503 diesel engine. 1.499L Inline 3, naturally aspirated. Powers 10-14 kW portable generators across multiple brands.

Overview#

The Kubota D1503 is a 1.499-liter, 3-cylinder inline naturally aspirated diesel engine powering portable generators in the 10-14 kW class. At 1800 RPM, it produces approximately 24.5-24.8 bhp depending on tune, delivering reliable prime power with low vibration and noise.

The D1503 shares its architecture with Kubota's compact tractor and utility vehicle engine family. The same block appears across multiple generator brands, making it one of the most widely deployed small diesel prime movers in the portable generator market.

Generators using this engine#

  • MQ Power DCA-10 WhisperWatt (10 kW)
  • MQ Power DCA-15 WhisperWatt (14 kW)
  • Airman SDG13 (10 kW)
  • Echo DGK14F (14 kW)

Found in these gensets

Generator models that ship with or are commonly paired with the Kubota D1503.

MQ Power

MQ Power DCA-10 WhisperWatt

WhisperWatt 10 kW — Kubota D1503 3-cylinder at 1800 RPM, 61 dBA at 7m, 120/240V single-phase, 16.4-gal tank. Tier 4 compliant.

11 kW standby · Diesel · Liquid-cooled

10 kW prime (11 kW standby) portable diesel generator. Kubota D1503-powered WhisperWatt single-phase at 61 dBA.

Tier 4 InterimSingle-phaseresidentialconstruction-small

MQ Power

MQ Power DCA-15 WhisperWatt

WhisperWatt 15 kW — Kubota D1503 at 1800 RPM, 64 dBA at 7m, 120/240V single-phase, 16.4-gal tank. Tier 4 Final certified, no aftertreatment.

14.7 kW standby · Diesel · Liquid-cooled

14 kW prime (14.7 kW standby) portable diesel generator. Kubota D1503-powered WhisperWatt single-phase at 64 dBA — Tier 4 Final certified.

Tier 4 FinalSingle-phaseresidentialconstruction-small

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