HomeGeneracGenerac SG045 | 4.5L | 45 kW

Generac SG045 | 4.5L | 45 kW Generator Set

The Generac SG045 | 4.5L | 45 kW is a 41 kW (45 kVA) Natural Gas, Propane standby generator set powered by a Generac 4.5L engine. It is available at 120/240 V, 120/208 V and 277/480 V, Single-Phase, Three-Phase-phase, 60 Hz and rated 169 A. It holds about 20 L (5.3 gal) of oil and 11.4 L (3.0 gal) of coolant, with a maximum ambient rating of 50 °C. The set measures 2×947×1 mm (0.1×37.3×0.0 in) and weighs about 353.4 kg (779 lb).

41 kW
Standby
4.5 L
Displacement
20.0 L
Oil capacity
1
Document types

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Specifications

FuelNatural Gas, Propane
Frequency60.0 Hz
Standby power41 kW
ControllerPower Zone Pro
Oil capacity20.0 L
AlternatorGenerac K0080124Y21
Voltage options120/240 V, 120/208 V, 277/480 V
PhaseSingle-Phase, Three-Phase
Rated current[169, 156, 141, 135, 122] A
Power factor[1.0, 0.8, 0.8]
Battery voltage12 V
Coolant capacity11.4 L
Max ambient50 °C
Dimensions (L×W×H)2×947×1 mm
Dry weight353 kg

Engine

Generac 4.5L
Oil capacity20.0 L
Coolant capacity50.0 L
Displacement4.5 L
AspirationNaturally Aspirated
Rated speed1800 rpm

Maintenance & consumables

for the Generac 4.5L
ItemSpecCapacityPart #Interval
Air filter find
Fuel filter find
Oil filter find
Belt find
Coolant11.4 L
Oil20.0 L

Common questions

What is the power rating of the Generac SG045 | 4.5L | 45 kW?

The Generac SG045 | 4.5L | 45 kW is rated 41 kW standby.

What engine does the Generac SG045 | 4.5L | 45 kW use?

The Generac SG045 | 4.5L | 45 kW is powered by the Generac 4.5L engine.

What fuel does the Generac SG045 | 4.5L | 45 kW use?

The Generac SG045 | 4.5L | 45 kW runs on Natural Gas, Propane.

What is the oil capacity of the Generac SG045 | 4.5L | 45 kW?

The Generac 4.5L engine in the Generac SG045 | 4.5L | 45 kW has an oil capacity of 20.0 liters.

What alternator does the Generac SG045 | 4.5L | 45 kW use?

The Generac SG045 | 4.5L | 45 kW uses a Generac K0080124Y21 alternator.

Fuel consumption

RatingLoadL/hgal/h
Prime25%105.0
Standby25%102.0

Available documents

Spec sheet — sg040-40kw-industrial-generator-spec-sheet (Generac)