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Home›Cummins/Onan›Cummins/Onan 6CTA8.3 series engine

Cummins/Onan 6CTA8.3 series engine Generator Set

The Cummins/Onan 6CTA8.3 series engine is a 140 kW (175 kVA) standby generator set powered by a Cummins/Onan 6CTA8.3 series engine engine. It is available at 120/208 V, 240/416 V, 120/240 V, 254/440 V, 127/220 V, 277/480 V, 139/240 V, 110/190 V, 230/400 V, 110/220 V, 240/415 V, 115/230 V and 220/380 V, A (U), B (V), C (W)-phase and 50 Hz. It holds about 20 L (5.3 gal) of oil and 28 L (7.4 gal) of coolant. Starting uses battery rated 550 CCA. The set measures 2662×1016×1433 mm (104.8×40.0×56.4 in) and weighs about 1513 kg (3336 lb). The same 6CTA8.3 series engine engine also powers generator sets from Mosa.

140 kW
Standby
8.3 L
Displacement
20.0 L
Oil capacity
1
Document types

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

Specifications

Frequency50.0 Hz
Standby power140 kW
Standby kVA175
Prime power125 kW
ControllerPowerCommand
Oil capacity20.0 L
Voltage options120/208 V, 240/416 V, 120/240 V, 254/440 V, 127/220 V, 277/480 V, 139/240 V, 110/190 V, 230/400 V, 110/220 V, 240/415 V, 115/230 V, 220/380 V
PhaseA (U), B (V), C (W)
Battery cranking550 CCA
Dimensions (L×W×H)2662×1016×1433 mm
Dry weight1513 kg

Engine

Cummins/Onan 6CTA8.3 series engine
Oil capacity20.0 L
Coolant capacity28.0 L
Displacement8.3 L
AspirationTurbocharged
Rated speed1800 rpm

Maintenance & consumables

for the Cummins/Onan 6CTA8.3 series engine
ItemSpecCapacityPart #Interval
Air filterAF4669 PartsGeek
Fuel filter3843760 PartsGeek
Oil filter3318853 Amazon eBay $48.95 PartsGeek
Belt3911562 PartsGeek
Coolant—
OilCummins Premium Blue 15W406.0 gal3377363 PartsGeek

Common questions

What is the power rating of the Cummins/Onan 6CTA8.3 series engine?

The Cummins/Onan 6CTA8.3 series engine is rated 140 kW standby (175.0 kVA).

What engine does the Cummins/Onan 6CTA8.3 series engine use?

The Cummins/Onan 6CTA8.3 series engine is powered by the Cummins/Onan 6CTA8.3 series engine engine.

What is the oil capacity of the Cummins/Onan 6CTA8.3 series engine?

The Cummins/Onan 6CTA8.3 series engine engine in the Cummins/Onan 6CTA8.3 series engine has an oil capacity of 20.0 liters.

Parts

138
Part #DescriptionQtySystem
102-1356Gasket, Oil DrainGasket PartsGeek
140-2240Cleaner, Air - Includes Element(s)1Air filter PartsGeek
140-2241Element, Air Cleaner - Standard (Outer)1Air filter PartsGeek
140-2252Element, Air Cleaner - Heavy Duty (Inner)1Air filter PartsGeek
155-3150-04Muffler, Critical1Muffler PartsGeek
155-3164-01Pipe, Exhaust1Pipe PartsGeek
193-0244Sender, Oil Pressure (E1)Sensor PartsGeek
193-0353Sender, Temperature - OilSensor PartsGeek
193-0375# Sender, Water TemperatureSensor PartsGeek
193-0448Sender, Oil Pressure (Includes Parts Marked *)1Sensor PartsGeek
3016627Alternator, 24VAs neededAlternator PartsGeek FridayParts $175.24
3016628Alternator, 12VAs neededAlternator PartsGeek
308-0913Kit, Repair - Fuel Tank Pump (includes Lip Seal, Bearings, Gasket, Drive Gear, Idle Gear, Coupler)1Pump PartsGeek
309-0269Air Cleaner (Includes Element) - StandardAir filter PartsGeek ironwing $32.86
309-0553Switch, Temperature - Low Engine Coolant (S4)1Sensor PartsGeek
309-0554Switch, Oil Pressure - 20 PSI (S5 Pre-Alarm)1Sensor PartsGeek
319-2653Window, Control (If Equipped)1Window PartsGeek
3318853Lube Filter (Fleetguard LF3000 equivalent)1Oil filter Amazon eBay $48.95 PartsGeek
3377363Lube Oil, Cummins Premium Blue 15W40 (one-gallon jugs)6 Gal.Fluid PartsGeek
3837348Cleaner, Air (replacement element, Air-Cleaner group AC9055-01)1Air filter PartsGeek
3843760Fuel Filter (Fleetguard FS1251 equivalent)1Fuel filter PartsGeek
3907177Seal, Rectangular Ring (Cylinder-Block group BP97003)1Seal PartsGeek
3908139Front Seal Service Kit, includes installation tools (Front-Gear-Cover group BP9733-04)1Seal PartsGeek
3911562BeltAs neededBelt PartsGeek
3913994Seal, O Ring (Front-Gear-Cover group BP9733-04)1Seal PartsGeek
3914303Gasket, Gear Housing (Front-Gear-Cover group BP9733-04)1Gasket PartsGeek
3915772Seal, Rectangular Ring (Front-Gear-Cover group BP9733-04)1Seal PartsGeek
3917779Gasket, Gear Cover (Front-Gear-Cover group BP9733-04)1Gasket PartsGeek
3921402Starter, 12VAs neededStarter PartsGeek
3921403Starter, 24VAs neededStarter PartsGeek
399-0117Pump, Fuel Tank (P103)1Pump PartsGeek
405-5744Post, Housing - Center4Post PartsGeek
405-5832Door, Housing6Door PartsGeek
405-5908Panel, Side - Radiator Housing2Panel PartsGeek
405-5916Post, Corner - Housing2Post PartsGeek
405-5917Panel, End - Roof2Panel PartsGeek
406-0831Hinge, Door14Hinge PartsGeek
502-0047Nipple, Pipe (1/4)1Nipple PartsGeek
503-0183Clamp, Hose1Sensor PartsGeek
503-0365Clamp, HoseHose PartsGeek
503-0446Clamp, Hose4Clamp PartsGeek
503-0465Clamp, HoseHose PartsGeek
503-0685Clamp, HoseHose PartsGeek
503-1595HoseHose PartsGeek
503-1599Hose, RadiatorHose PartsGeek
526-0451Washer, Flat - Stainless Steel (M8)2Washer PartsGeek
821-0018Thermostat (Includes Plugs)Thermostat PartsGeek
821-6003-02Screw, Cap - Hex Head2Screw PartsGeek
870-0257Nut, Locking (5/16−18) * − Parts Used On Heat Exchanger Installations With Automatic Water Regulator # − Cut Off And Discard Swivel Connector End Of Hose So That 1/8 NPT Connector End Measures Length As Indicated Above + − Parts Used On Heat Exchanger Installations Without Automatic Water RegulatorHose PartsGeek
AF4669Air Cleaner (6CTA8.3-F, Fleetguard)1Air filter PartsGeek
102-1237Adapter, Oil Drain (Ml8 x 1/2") (S2)Service part / kit PartsGeek
130-3208Service part / kit PartsGeek
130-3209Service part / kit PartsGeek
130-3212Part 130-3212Service part / kit PartsGeek
130-3216Part 130-3216Service part / kit PartsGeek
130-3217Service part / kit PartsGeek
130-3218Service part / kit PartsGeek
140-1260Fitting, Safety FilterService part / kit Amazon eBay $35.00 PartsGeek
140-1548Service part / kit Amazon eBay $91.60 PartsGeek
140-1601Service part / kit PartsGeek
140-1973Service part / kit PartsGeek
140-2238Service part / kit PartsGeek
140-2239Service part / kit PartsGeek
140-2251Cleaner, Air (Includes Elements)Service part / kit PartsGeek
150-2252Service part / kit PartsGeek
155-2304Service part / kit PartsGeek
155-2307SilencerService part / kit PartsGeek
191-19830Service part / kit PartsGeek
191-2038Service part / kit PartsGeek
309-0561Service part / kit PartsGeek
332-1473Part 332-1473Service part / kit PartsGeek
332-2738Service part / kit PartsGeek
402-0030Part 402-0030Service part / kit PartsGeek
403-2690Service part / kit PartsGeek
416-0444Cable, Battery - NegativeService part / kit PartsGeek
416-0619Service part / kit PartsGeek
501-0441Line, Fuel - Flex (Fuel In)Service part / kit PartsGeek
501-0480Line, Fuel - Flex (Fuel Out)Service part / kit PartsGeek
503-0099Service part / kit PartsGeek
503-0197Service part / kit PartsGeek
503-1354Service part / kit PartsGeek
503-1586Service part / kit PartsGeek
503-1870Service part / kit PartsGeek
504-0011Valve, Shutoff (1/2”)Service part / kit PartsGeek
505-0021Bushing, Pipe - Reducer (3/4º to 1/2º)Service part / kit PartsGeek
505-0050Nut, Cap - Hex Head (#10-32 x 30mm)Service part / kit PartsGeek
505-0185Service part / kit PartsGeek
505-1373Service part / kit PartsGeek
508-0015Service part / kit PartsGeek
508-0231Service part / kit PartsGeek
517-0138Service part / kit PartsGeek
526-00031 “Panel, Top + So 26 405~ “1872 16Service part / kit PartsGeek
526-0008Service part / kit PartsGeek
526-0141Service part / kit PartsGeek
526-0219Washer, Flat (1/2)Service part / kit PartsGeek
526-2140Service part / kit PartsGeek
600-2124Service part / kit PartsGeek
660-2008Service part / kit PartsGeek
718-1026Service part / kit PartsGeek
800-0008ConnectorService part / kit PartsGeek
800-0026Screw, Cap - Hex Head - Cushion MountingService part / kit PartsGeek
800-0091Service part / kit PartsGeek
800-0520Screw, Cap - Hex Head - Self Locking 3/4-10 x 1"Service part / kit PartsGeek
800-2058Part 800-2058Service part / kit PartsGeek
800-2088Service part / kit PartsGeek
800-2096Service part / kit PartsGeek
800-2110Hood, Inlet - Air MoldedService part / kit PartsGeek
800-2111Screw, Cap - Hex Head (M12 x 10mm)Service part / kit PartsGeek
809-0035Screw, Tapping - RoundheadService part / kit PartsGeek
815-0115Service part / kit PartsGeek
815-0172Cover, Adapter OutletService part / kit PartsGeek
818-0150Service part / kit PartsGeek
821-0014Screw, self-locking - Hex HeadService part / kit PartsGeek
821-0029Screw, Self–Locking – Hex Washer Head (3/8–16 x 3/4")Service part / kit PartsGeek
830-2008Service part / kit PartsGeek
850-0030Washer, Lock - Spring (#10)Service part / kit PartsGeek
850-0060Washer, Lock - SpringService part / kit PartsGeek
850-2005Washer, Lock - Spring (M5)Service part / kit PartsGeek
850-2008Heater, Engine Coolant1Service part / kit PartsGeek
850-20106 Residential and Critical (M10)Service part / kit PartsGeek
850-2012Washer, Lock - Spring (M12)Service part / kit PartsGeek
856-0008Washer (5/ 16 “),Shakeprcmf EITService part / kit PartsGeek
856-0013Service part / kit PartsGeek
860-2006Service part / kit PartsGeek
862-00044 ttNut, Hex - Set Mounting - Key 2 HARDWARE SET, SET MOUNTINGService part / kit PartsGeek
862-0016Nut, HexService part / kit PartsGeek
863-0002Cleaner, Air (Includes Element)Service part / kit PartsGeek
870-0048Nut, Self-lockingService part / kit PartsGeek
870-0053Service part / kit PartsGeek
870-0196Nut, InsulatedService part / kit PartsGeek
870-0212Nut, Locking (1/4-20)Service part / kit PartsGeek
870-0281Nut, Self-Locking – Hex Washer Head (3/8–16)Service part / kit PartsGeek
871-0010ENut, Hex (10-32) ‘853-0006 Elackwasher 526-004$Service part / kit PartsGeek
928-0502BService part / kit PartsGeek
928-0506Service part / kit PartsGeek
960-0504AService part / kit PartsGeek
960-0505Service part / kit PartsGeek
960-12Service 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
Prime
Standby

Available documents

Spec sheet — Cummins-DGFB-spec-sheet (Cummins/Onan)

Other sets with this engine

Cummins/Onan DGFACummins/Onan DGFB