Facts About Generators
GeneratorsDirectoryCompareRepairEnginesControllersPartsManufacturersGuides
Search models or part #
Home›Engines›Cummins/Onan QSL

Cummins/Onan QSL Engine

The Cummins/Onan QSL is a 9 L 6-cylinder turbocharged and charge air cooled engine rated at 2100 rpm, producing up to 272 kW. It powers generator sets from Cummins/Onan, including the QSL 365. It holds 24 L (6.3 gal) of oil.

Also known as: Cummins QSL

9.0 L
Displacement
6
Cylinders
2100 rpm
Rated speed
272 kW
Gross power
On this pageSpecsGenerator setsMaintenanceFAQService intervals

Engine specifications

Oil capacity24.0 L
Displacement9.0 L
Cylinders6
AspirationTURBOCHARGED AND CHARGE AIR COOLED
Rated speed2100 rpm
Gross power272 kW

Generator sets powered by this engine

1
Cummins/Onan QSL 365

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

Maintenance schedule

ItemSpecCapacityPart #Interval
Air filterCummins branded components such as starters and alternators—2000 hr
Fuel filterCummins branded components such as starters and alternators—2000 hr
Oil filterCummins branded components such as starters and alternators—2000 hr
BatteryCummins branded components such as starters and alternators—2000 hr
BeltCummins branded components such as starters and alternators—2000 hr
CoolantCummins branded components such as starters and alternators1000.0 L—2000 hr
OilCummins branded components such as starters and alternators1000.0 L—2000 hr
Spark plugCummins branded components such as starters and alternators—2000 hr

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Service intervals

1
ItemActionHoursMonthsNotes
Overhead valve setAdjust5000 hrQSM, QSX and QSK19

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 is the oil capacity of the Cummins/Onan QSL?

The Cummins/Onan QSL engine has an oil capacity of 24.0 liters.

What is the displacement of the Cummins/Onan QSL?

The Cummins/Onan QSL has a displacement of 9.0 liters with 6 cylinders.

Which generators use the Cummins/Onan QSL engine?

The Cummins/Onan QSL powers 1 generator set(s), including Cummins/Onan QSL 365.

How often should you change the oil in the Cummins/Onan QSL?

The Cummins/Onan QSL oil change interval is every 2000 hours.