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Caterpillar 3126 Generator Set

The Caterpillar 3126 is a 235 kW prime generator set powered by a Caterpillar 3126B engine. It holds about 25 L (6.6 gal) of oil and 39 L (10.3 gal) of coolant. The set measures 1580.7×889.9×917.1 mm (62.2×35.0×36.1 in) and weighs about 822 kg (1812 lb).

7.2 L
Displacement
25.0 L
Oil capacity
3
Document types

How to read your Caterpillar serial & model number →

Specifications

Prime power235 kW
EmissionsIMO compliant
Oil capacity25.0 L
Coolant capacity39 L
Dimensions (L×W×H)1580×889×917 mm
Dry weight722 kg

Engine

Caterpillar 3126B
Displacement7.2 L
AspirationATAAC1
Rated speed2500 rpm

Maintenance & consumables

for the Caterpillar 3126B
ItemSpecCapacityPart #Interval
Air filter— find
Fuel filter— find
Oil filter— find
Belt— find
Coolant—
Coolant filter— find
Oil—

Compatible filters for the Caterpillar 3126B — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: Caterpillar 2453818 Caterpillar 1318221 Caterpillar 30009151 Caterpillar 2456375 Caterpillar 2456376
  • Coolant filter: Caterpillar 3I1288 Caterpillar 9N3366 Donaldson P552071 Donaldson P554071 Ac Delco WF4
  • Fuel filter: Caterpillar 1165436 Caterpillar 2568753 Caterpillar 5134490 Caterpillar 1R0753 Caterpillar 1466695
  • Oil filter: Caterpillar 0773673 Caterpillar IR1807 Caterpillar 3890434 Caterpillar 492164004 Caterpillar 1W3300

Common questions

What engine does the Caterpillar 3126 use?

The Caterpillar 3126 is powered by the Caterpillar 3126B engine.

Parts

70
Part #DescriptionQtySystem
10R-0781REMANUFACTURED FUEL INJECTOR - 3126B (GP, TYPE 2)1Fuel injector sinocmp $359.00
119-5152Coolant Extender**quart bottleOil filter buy
1R-0753Fuel Secondary - ADVFilter ddtp $27.40
2133193Connecting rodsConnecting rod FridayParts $105.00
64F4M072SB1WM 3126 Series, 2-Valve, AllHP Any long block with installed injector setF1, F2Injector buy
64F8M072SB7AS, 8YL, 9SZ, CKM, HEP 3126 Series, 3-valve, All HP, Any long block with installed injector setF1, F2Injector buy
64G3M072ASB2003-Up C7 Long Block with Injectors, 190-210HP, Serial KAL 1-99999, Serial SAP 1-99999, Serial WAX AllF2Injector buy
64G3M072BSB2003-Up C7 Long Block with Injectors, 230-250HP, Serial KAL 1-99999, Serial SAP 1-99999, Serial WAX AllF2Injector buy
8991188Check Valve AssemblyCheck valve assembly buy
DS-127-8207FUEL INJECTOR - 3114 / 3116 (MUI)1Fuel injector buy
DS-127-8213FUEL INJECTOR - 3114 / 3116 (MUI)1Fuel injector buy
DS-127-8216FUEL INJECTOR - 3114 / 3116 (MUI)1Fuel injector buy
DS-127-8218FUEL INJECTOR - 3114 / 3116 (MUI)1Fuel injector buy
DS-127-8222FUEL INJECTOR - 3114 / 3116 (MUI)1Fuel injector buy
DS-127-8225FUEL INJECTOR - 3114 / 3116 (MUI)1Fuel injector buy
DS-4P-2995FUEL INJECTOR - 3116 / C71Fuel injector buy
DZ117503ALTERNATOR (24V, 140A)Alternator buy
M-2886699Gasket Set - Front StructureGasket buy
PEHP7069-01Reman Water PumpWater pump buy
g00107406ClutchMechanical buy
g00367054Engine LiftingMechanical buy
g00737484Hydraulic Electronic Unit InjectorsElectrical buy
i01549500Sensors and Electrical ComponentsSensor buy
101-2844Oil Pan1 gallon (3.8L)Service part / kit buy
64F4D250SB3126 Series, 2-valve, AllHP1WMService part / kit buy
64F4L072WM3126 Series, 2-valve, 170-300HP, 1WM Serial Numbers - All, (built with the articulated cast steel 2 piece piston)1 WMService part / kit buy
64F8D190SB7AS, 8YL, 9SZ, CKM 3126, 3-valve, 190-210HP, FreightlinerF1, F2Service part / kit buy
64F8D210SB7AS, 8YL, 9SZ, CKM 3126, 3-Valve, 190-210HP, GMC Bus, Thomas BusF1, F2Service part / kit buy
64F8D230SB7AS, 8YL, 9SZ, CKM 3126, 3-Valve, 230HP, FreightlinerF1, F2Service part / kit buy
64F8D250SB7AS, 8YL, 9SZ, CKM 3126, 3-Valve, 250-up HP, FreightlinerF1, F2Service part / kit buy
64F8D300SB7AS, 8YL, 9SZ, CKM 3126, 3-Valve, 230-up HP, GMC BusF1, F2Service part / kit buy
64F8L072A3126 Series, 3-valve, 190-210HP, 1-piece piston, 1283883 Front Housing7AS, 8YL, 9SZ, CKMService part / kit buy
64F8L072B3126 Series, 3-valve, 230HP & UP, 2-piece piston, 1283883 Front Housing7AS, 8YL, 9SZ, CKMService part / kit buy
64G1L072SB3126 Series, Long Block, Build to OrderVARIOUSService part / kit buy
64G2D210SBHEP 3126, 3-valve, 190-210HP, FreightlinerF1, F2Service part / kit buy
64G2D250SBHEP 3126, 3-Valve, 230-up HP, FreightlinerF1, F2Service part / kit buy
64G2L072A3126 Series, 3-valve, 190-210HP, 1-piece piston, Cast Iron Front HousingHEPService part / kit buy
64G2L072BHEP 3126 Series, 3-valve, 230HP & Up, 2-piece piston, Cast Iron Front HousingF1, F2Service part / kit buy
64G3D190SBC7, 190-210HP, GMC Truck and Bus, Blue Diamond/FordF1, F2 KAL, SAP, WAXService part / kit buy
64G3D210SBC7, 190-210HP, Bluebird Bus, FreightlinerF1, F2 KAL, SAP, WAXService part / kit buy
64G3D250SBC7, 230-300HP, FreightlinerF1, F2 KAL, SAP, WAXService part / kit buy
64G3D330SBC7, 330-up HP, FreightlinerF1, F2 KAL, SAP, WAXService part / kit buy
64G3L072A2003-Up C7 Long Block, 190-210HP, Serial KAL 1-99999, Serial SAP 1-99999, Serial WAX AllF2Service part / kit buy
64G3L072B2003-Up C7 Long Block, 230-250HP, Serial KAL 1-99999, Serial SAP 1-99999, Serial WAX AllF2Service part / kit buy
AEHQ5589Heavy-Duty Hinged Radiator Grille7-04Service part / kit buy
PEHP9528Cat Reman Piston PackService part / kit buy
g00704000Exhaust shield (if equipped)Service part / kit buy
g00772964Illustration 23Service part / kit buy
g00805525Illustration 22 - Typical example Left side viewService part / kit buy
i00838797Customer Specified ParametersService part / kit buy
i01097883Important Safety InformationService part / kit buy
i01103904Engine StartingService part / kit buy
i01143691Engine ElectronicsService part / kit buy
i01324368Cold Start StrategyService part / kit buy
i01324374Engine Operation with Active Diagnostic CodesService part / kit buy
i01359666Support the component properly when work beneath the component is performedService part / kit buy
i01372247Mounting and DismountingService part / kit buy
i01372254Cooling system conditionerService part / kit buy
i01399675Safety Signs and LabelsService part / kit buy
i01421840Before Starting EngineService part / kit buy
i01456258Welding on Engines with Electronic ControlsService part / kit buy
i01456915Engine Operation with Intermittent Diagnostic CodesService part / kit buy
i01462046Engine StoppingService part / kit buy
i01463242Self-DiagnosticsService part / kit buy
i01463253Diagnostic LampService part / kit buy
i01468706Cold Weather StartingService part / kit buy
i01481981Electrical SystemService part / kit buy
i01486758Before Starting EngineService part / kit buy
i01512354Starting the EngineService part / kit buy
i01548661Diagnostic Flash Code RetrievalService part / kit buy

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
Prime30%17.9
Standby

Available documents

Engine specSpec sheetService manual