HomeCaterpillarCaterpillar ESP 550

Caterpillar ESP 550 Generator Set

The Caterpillar ESP 550 is a 550 kW (688 kVA) standby generator set powered by a Caterpillar C15 ATAAC engine. It is available at 480 V, 3-phase and 60 Hz. It holds about 60 L (15.9 gal) of oil and 20.8 L (5.5 gal) of coolant, with a maximum ambient rating of 1445 °C. The set measures 3775.1×1110×2091 mm (148.6×43.7×82.3 in) and weighs about 4749 kg (10470 lb).

550 kW
Standby
15.2 L
Displacement
60.0 L
Oil capacity
1
Document types

How to read your Caterpillar serial & model number →

Service parts for the ESP 550

Grouped by system, with how many of each the parts manual calls for.

Air intake

1 required
46822Air filter$218.50eBay

Fuel system

1 required
33674Fuel filter$19.97PartsGeek

Oil system

1 required

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

Frequency60.0 Hz
Standby power550 kW
Standby kVA688
ControllerEMCP 4
Oil capacity60.0 L
AlternatorLC6114G
Voltage options480 V
Phase3-phase
Coolant capacity20.8 L
Max ambient1445 °C
Dimensions (L×W×H)3775×1110×2091 mm
Dry weight4749 kg

Engine

Caterpillar C15 ATAAC
Oil capacity60.0 L
Coolant capacity57.8 L
Displacement15.2 L
AspirationAir-to-Air Aftercooled
Rated speed1500 rpm

Maintenance & consumables

for the Caterpillar C15 ATAAC
ItemSpecCapacityPart #Interval
Air filter468221250 hr Amazon eBay $218.50 FridayParts $132.57
Fuel filter336741250 hr Amazon eBay $50.97 PartsGeek $19.97 KuduParts $147.00
Oil filter2P40051250 hr Amazon eBay $32.99 PartsGeek $23.97 KuduParts $39.00
Battery1250 hr
Belt1250 hr
Coolant57.8 L1250 hr
Oil60.0 L
Spark plug

Common questions

What size generator is the Caterpillar ESP 550?

The Caterpillar ESP 550 is rated 550 kW standby (688.0 kVA).

What engine does the Caterpillar ESP 550 use?

The Caterpillar ESP 550 is powered by the Caterpillar C15 ATAAC engine.

What is the oil capacity of the Caterpillar ESP 550?

The Caterpillar C15 ATAAC engine in the Caterpillar ESP 550 has an oil capacity of 60.0 liters.

What alternator comes on the Caterpillar ESP 550?

The Caterpillar ESP 550 uses a LC6114G alternator.

What oil filter does the Caterpillar ESP 550 use?

The Caterpillar ESP 550 uses oil filter part number 2P4005.

Which fuel filter part number does the Caterpillar ESP 550 take?

The Caterpillar ESP 550 uses fuel filter part number 33674.

What air filter fits the Caterpillar ESP 550?

The Caterpillar ESP 550 uses air filter part number 46822.

Fuel consumption

RatingLoadL/hgal/h
Standby75.020.6
Standby50%38.410.2
Standby75%75.519.9
Standby100%145.538.4

Available documents

Spec sheet — C15+550+ekw+Standby+Low+BSFC EMCP4 (Caterpillar)Spec sheet — C15+550+ekw+Standby+Tier2+Griffin+60+Hz EMCP4 (Caterpillar)
Full service, cheapest listings

Priced items from this model's own parts manual.

Air filter 46822$218.50
Fuel filter 33674$19.97
Oil filter 2P4005$23.97
3 priced items$262.44