Home›Cummins/Onan›Cummins/Onan QSB5-G5

Cummins/Onan QSB5-G5 Generator Set

The Cummins/Onan QSB5-G5 is a 88 kW (110 kVA) diesel standby generator set powered by a Cummins/Onan QSB5-G5 engine. It is available at 12 V, 50 Hz. It holds about 12.2 L (3.2 gal) of oil and 34 L (9.0 gal) of coolant, with a maximum ambient rating of 55 °C. The set measures 1398×871×1165 mm (55.0×34.3×45.9 in) and weighs about 462 kg (1019 lb).

88 kW
Standby
4.5 L
Displacement
12.2 L
Oil capacity
2
Document types

How to read your Cummins/Onan serial & model number →

Typical fuel consumption for 85–90 kW Diesel generators →

Compare with other 85–90 kW Diesel generators →

Specifications

Fueldiesel
Frequency50.0 Hz
Standby power88 kW
Standby kVA110
Prime power80 kW
Oil capacity12.2 L
Alternator100 amps
Voltage options12 V
Coolant capacity34 L
Max ambient55 °C
Dimensions (L×W×H)1398×871×1165 mm
Dry weight462 kg

Engine

Cummins/Onan QSB5-G5
Displacement4.5 L
AspirationTurbocharged
Rated speed1500 rpm

Service intervals

2
ItemActionHoursMonthsNotes
valve clearanceCheck2000 hrB-Series (4BT3.3): valve clearance checks not required for 2000 hours, twice the industry standard
engine overhaulOther20000 hrQSK23-Series: expected life cycle to 20,000 hours before first overhaul

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Common questions

What size generator is the Cummins/Onan QSB5-G5?

The Cummins/Onan QSB5-G5 is rated 88 kW standby (110.0 kVA).

What engine does the Cummins/Onan QSB5-G5 use?

The Cummins/Onan QSB5-G5 is powered by the Cummins/Onan QSB5-G5 engine.

What kind of fuel does the Cummins/Onan QSB5-G5 run on?

The Cummins/Onan QSB5-G5 runs on diesel.

What is the coolant capacity of the Cummins/Onan QSB5-G5?

The Cummins/Onan QSB5-G5 cooling system holds 34 liters (9.0 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the oil capacity of the Cummins/Onan QSB5-G5?

The Cummins/Onan QSB5-G5 has an engine oil capacity of 12.2 liters (12.9 US quarts), per the manufacturer specification sheet.

What is the continuous rating of the Cummins/Onan QSB5-G5?

The Cummins/Onan QSB5-G5 is rated 80 kW prime (100 kVA), against 88 kW standby.

How much does the Cummins/Onan QSB5-G5 weigh?

The Cummins/Onan QSB5-G5 has a dry weight of 462 kg (1018 lb).

What voltage does the Cummins/Onan QSB5-G5 produce?

The Cummins/Onan QSB5-G5 is offered in 12 V.

What alternator does the Cummins/Onan QSB5-G5 use?

The Cummins/Onan QSB5-G5 uses a 100 amps alternator.

Parts

21
Part #DescriptionQtySystem
0179-3714Air Cleaner InstlAir filter eBay
PI144D1Alternator Model1Alternator Amazon eBay
UC274CAlternator Model1Alternator Amazon eBay $8681.95
UC274KAlternator Model1Alternator Amazon eBay
0100-3853-01Engine-Diesel (4ISBeG1)1Service part / kit eBay
0179-3628Radiator AssyService part / kit eBay
0179-4344Outlet Sockets Box Instl1Service part / kit eBay
0179-4365Fuel System InstlService part / kit eBay
0179-4466Circuit Breaker AssyService part / kit eBay
0179-4472Heater InstlService part / kit eBay
0179-4517Skid Assy (XRS)Service part / kit eBay
0179-4542Battery Isolator AssyService part / kit eBay
0300-6029Accessory InstlService part / kit eBay
0338-0000HarnessesService part / kit eBay
0403-5265-02Spacer-Generator (UC274C)1Service part / kit eBay
0403-5835-02Skid1Service part / kit eBay
0403-5850-02Skid1Service part / kit eBay
0403-5962End Cap-Skid1Service part / kit eBay
0403-5966End Cap-Skid (Assy)1Service part / kit eBay
0405-8842EnclosureService part / kit eBay
V2403-M-E3BGEngine Model1Service part / kit Amazon eBay

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
Prime100%34.08.9
Standby100%29.07.5

Available documents

Spec sheet — QSB5-G5 0 (Cummins/Onan)Reference — CUMMINS-GENERATOR-ENGINES-CATALOG (Cummins/Onan)

This page was generated from the 2 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.