Kohler 40REOZK Specs (Power | Consumption)

The Kohler 40REOZK generator is listed with standby output of 42 kW, Diesel fuel, 60 Hz operation, and 7 available voltage configurations.

Kohler Generator Specifications

Generator • Diesel • 60 Hz

Standby power: 42 kWVoltage options: 7 configurationsDry weight: 1,735 lb (787 kg)

Key specifications

42 kW Standby power

Diesel Fuel

7 configurations Voltage options

1,735 lb (787 kg) Dry weight

60 Hz Frequency

Useful generator charts

Charts are shown only when this model has enough usable source data.

Fuel consumption by load

How fuel use changes as generator load increases.

25% load

1.3 gal/hr

50% load

2.4 gal/hr

75% load

3.1 gal/hr

100% load

3.7 gal/hr

Power-to-weight

Standby output per 1,000 lb of dry weight versus similar-output Kohler models.

This model

24.2 kW

Peer average

24.9 kW

53rd percentile

Power output

Low 37 kW High 42 kW

Standby

42 kW

Prime

37 kW

Model spec snapshot

Representative numeric specifications from this generator.

42 kWStandby

1,735.04 lbWeight

How the Kohler 40REOZK compares

This compares the supplied numeric specification with Kohler generators in the same broad standby-power class where enough comparable data exists.

Standby power

42 kW

In line with avg

59th percentile

Dry weight

1,735 lb

13% below avg

36th percentile

Oil capacity

4.12 gal

64% above avg

95th percentile

Standby power42 kW

Low 30 kWAverage 41.1 kWHigh 55 kW

Very close to the similar-output Kohler average. Around the 59th percentile for this field.

Dry weight1,735 lb

Low 657 lbAverage 1,994 lbHigh 4,385 lb

About 13% below the similar-output Kohler average. Around the 36th percentile for this field.

Oil capacity4.12 gal

Low 1.09 galAverage 2.52 galHigh 4.12 gal

About 64% above the similar-output Kohler average. Around the 95th percentile for this field.

This model Peer average

Generator information

Manufacturer	Kohler
Model	40REOZK
Generator type	Generator
Fuel	Diesel
Frequency	60 Hz

Electrical output

Standby power	42 kW
Prime power	37 kW
Standby kVA	52.0
Voltage options	120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V, 277/480 V, 347/600 V

Engine, cooling and controls

Engine model	Kohler KDI 3404TM
Engine displacement	207 cu in (3.4 L)
Aspiration / cooling	Turbocharged
Rated engine speed	1800 rpm
Engine oil capacity	4.12 gal (15.6 L)
Engine coolant capacity	3.25 gal (12.3 L)
Oil capacity	4.12 gal (15.6 L)
Coolant capacity	3.25 gal (12.3 L)
Maximum ambient	122 °F (50 °C)
Controller	Decision-Maker 3000
Emissions	Tier 3

Physical specifications

Dry weight	1, 735 lb (787 kg)
Dimensions (L × W × H)	90.6 × 40.9 × 44.5 in (2300 × 1040 × 1131 mm)

Battery

Battery cranking	650 CCA
Battery voltage	12 V
Battery quantity	1

Fuel consumption

Standby	1.3 gal/h (4.9 L/h) @ 25%; 2.4 gal/h (9.1 L/h) @ 50%; 3.1 gal/h (11.7 L/h) @ 75%; 3.7 gal/h (14.0 L/h) @ 100%
Prime	1.3 gal/h (4.9 L/h) @ 25%; 2.0 gal/h (7.6 L/h) @ 50%; 2.8 gal/h (10.6 L/h) @ 75%; 3.5 gal/h (13.2 L/h) @ 100%

Maintenance and service parts

Engine oil	Interval: 250 hr; Specification: Engine oil level (8); Capacity: 15.6 L
Oil filter	Interval: 500 hr; Specification: Engine oil and oil filter cartridge replacement (250, 500); Capacity: ×1
Fuel filter	Interval: 1000 hr; Specification: Fuel filter and prefilter cartridge replacement (250, 500)
Air filter	Interval: 5000 hr; Specification: Dry
Coolant	Interval: 1000 hr; Specification: Coolant level (8) (9), Check coolant level (3.2.2)
Belt	Interval: 1500 hr; Specification: Alternator belt (8) (6) (7), Check Poly-V alternator belt (3.2.2)

Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Kohler North America generator website.