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Kubota SDG13LX-581 Generator Set

The Kubota SDG13LX-581 is a 22 kW Diesel standby generator set powered by a Kubota D1503-K3A engine. It is available at 400 V and 440 V, 3-phase, 50 Hz and rated 28.9 A. It holds about 6.5 L (1.7 gal) of oil and 6.5 L (1.7 gal) of coolant. Starting uses 1 group-85 battery at 12 V. The set measures 1390×650×1160 mm (54.7×25.6×45.7 in), weighs about 580 kg (1279 lb) and produces 84 dBA at 7 m. An integrated tank holds 100 L (26.4 gal). The same D1503-K3A engine also powers generator sets from Airman.

22 kW
Standby
1.499 L
Displacement
6.5 L
Oil capacity
0
Document types

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Specifications

FuelDiesel
Frequency50.0 Hz
Standby power22 kW
Prime power20 kW
EmissionsJPN Stage 3
Oil capacity6.5 L
AlternatorKubota V2403-K3A (4-pole)
Voltage options400 V, 440 V
Phase3
Rated current28.9 A
Power factor0.8
Battery group85D26Rx1
Battery voltage12 V
Battery quantity1
Coolant capacity6.5 L
Dimensions (L×W×H)1390×650×1160 mm
Dry weight580 kg
Sound level84.0 dBA @ 7 m
Fuel tank100.0 L

Engine

Kubota D1503-K3A
Oil capacity6.5 L
Coolant capacity6.5 L
Displacement1.499 L
AspirationSwirl chamber
Rated speed1500 rpm

Maintenance & consumables

for the Kubota D1503-K3A
ItemSpecCapacityPart #Interval
Air filterAir Element1000 hr find
Fuel filterFuel Filter500 hr find
Oil filter95D31Rx187415600500 hr PartsGeek $8.98
Belt95D31Rx1 find
OilEngine Oil6.5 L250 hr

Compatible filters for the Kubota D1503-K3A — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: Kubota RG64842831 Kubota R141142289 Donaldson P821575 Donaldson P822858 Wix 46438NP
  • Fuel filter: Kubota 607 Donaldson P502161 Wix 33507

Common questions

What is the power rating of the Kubota SDG13LX-581?

The Kubota SDG13LX-581 is rated 22 kW standby.

What engine does the Kubota SDG13LX-581 use?

The Kubota SDG13LX-581 is powered by the Kubota D1503-K3A engine.

What fuel does the Kubota SDG13LX-581 use?

The Kubota SDG13LX-581 runs on Diesel.

What is the oil capacity of the Kubota SDG13LX-581?

The Kubota D1503-K3A engine in the Kubota SDG13LX-581 has an oil capacity of 6.5 liters.

What alternator does the Kubota SDG13LX-581 use?

The Kubota SDG13LX-581 uses a Kubota V2403-K3A alternator. It has 4 poles.

What oil filter does the Kubota SDG13LX-581 use?

The Kubota SDG13LX-581 uses oil filter part number 87415600.

What fuel filter does the Kubota SDG13LX-581 use?

The Kubota SDG13LX-581 uses fuel filter part numbers KUBOTA 607, Donaldson P502161.

What air filter does the Kubota SDG13LX-581 use?

The Kubota SDG13LX-581 uses air filter part numbers KUBOTA RG64842831, KUBOTA R141142289.

Parts

3
Part #DescriptionQtySystem
1509001JQA-05811Service part / kit PartsGeek
80D26Rx1Engine Oil1Service part / kit PartsGeek
JQA-EM4670ISO140011Service part / kit PartsGeek

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime50%3.17.9
Prime75%4.211.0
Standby50%2.66.6
Standby75%2.66.6

Available documents