HomeFG WilsonFG Wilson P55-2

FG Wilson P55-2 Generator Set

The FG Wilson P55-2 is a 44 kW (55 kVA) Diesel standby generator set powered by a Perkins 1104C-44TG2/3 engine. It is available at 415/240 V, 400/230 V and 380/220 V, 3-phase, 50 Hz and rated 11.7 A. It holds about 8 L (2.1 gal) of oil and 13 L (3.4 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses 1 group-1002 battery at 12 V. The set measures 1925×1120×1361 mm (75.8×44.1×53.6 in), weighs about 957 kg (2110 lb) and produces 19 dBA at 1 m. An integrated tank holds 219 L (57.9 gal), roughly 57.9 hours of runtime.

44 kW
Standby
4.4 L
Displacement
8.0 L
Oil capacity
2
Document types

How to read your FG Wilson serial & model number →

Typical fuel consumption for 40–45 kW Diesel generators →

Compare with other 40–45 kW Diesel generators →

Service parts for the P55-2

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

Electrical

1 required
1002TBatterysee priceAmazon

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

Specifications

FuelDiesel
Frequency50.0 Hz
Standby power44 kW
Standby kVA55
Prime power40 kW
EmissionsEU Stage II
Controller1002T
Oil capacity8.0 L
AlternatorLeroy-Somer LL2014D (2-pole, Class H insulation)
Voltage options415/240 V, 400/230 V, 380/220 V
Phase3
Rated current11.7 A
Power factor0.8
Circuit breaker3 Pole MCB A
Battery group1002T
Battery voltage12 V
Battery quantity1
Coolant capacity13.0 L
Max ambient50 °C
Dimensions (L×W×H)1925×1120×1361 mm
Dry weight957 kg
Fuel tank219.0 L
Tank runtime57.9 hr

Engine

Perkins 1104C-44TG2/3
Oil capacity8.9 L
Coolant capacity13.1 L
Displacement4.4 L
AspirationTurbocharged
Rated speed1820 rpm

Maintenance & consumables

for the Perkins 1104C-44TG2/3
ItemSpecCapacityPart #Interval
Air filterElemento sostituibile12000 hr
Fuel filterElemento sostituibile1020 hr
Oil filterElemento sostituibile12000 hr
Battery12/Negative1002T100 hr Amazon eBay
BeltCentrifugo1500 hr
Coolant1500 hr
OilAPI CC/SE800 hr
Spark plug1500 hr

Compatible filters for the Perkins 1104C-44TG2/3 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: Fg Wilson 901004 Fg Wilson 901048 Fg Wilson 901050 Perkins 26510316 Perkins 26510236
  • Fuel filter: Fg Wilson 901214 Fg Wilson 1000063247 Fg Wilson 1000051232 Perkins T64102003 Perkins 2656F823
  • Oil filter: Fg Wilson 1000065570 Fg Wilson 901103 Perkins 2254347 Perkins T74105021 Perkins 901103

Common questions

How many kW is the FG Wilson P55-2?

The FG Wilson P55-2 is rated 44 kW standby (55.0 kVA).

What engine is in the FG Wilson P55-2?

The FG Wilson P55-2 is powered by the Perkins 1104C-44TG2/3 engine.

Is the FG Wilson P55-2 diesel or gas?

The FG Wilson P55-2 runs on Diesel.

What's the oil capacity on a FG Wilson P55-2?

The Perkins 1104C-44TG2/3 engine in the FG Wilson P55-2 has an oil capacity of 8.9 liters.

What alternator comes on the FG Wilson P55-2?

The FG Wilson P55-2 uses a Leroy-Somer LL2014D alternator. It has 2 poles. Insulation class H.

Which oil filter part number does the FG Wilson P55-2 take?

The FG Wilson P55-2 uses oil filter part numbers FG WILSON 1000065570, FG WILSON 901103.

What fuel filter fits the FG Wilson P55-2?

The FG Wilson P55-2 uses fuel filter part numbers FG WILSON 901214, FG WILSON 1000063247.

What air filter does the FG Wilson P55-2 use?

The FG Wilson P55-2 uses air filter part numbers FG WILSON 901004, FG WILSON 901048.

Parts

9
Part #DescriptionQtySystem
LLB1114BLeroy Somer1Alternator Amazon eBay
LLB1114DLeroy Somer1Alternator Amazon eBay
LLB1114FLeroy Somer1Alternator Amazon eBay
LLB1114LLeroy Somer1Alternator Amazon eBay
LLB1114MLeroy Somer1Alternator Amazon eBay
LLB1514JLeroy Somer1Alternator Amazon eBay
LLB1514PLeroy Somer1Alternator Amazon eBay
LLB3114DLeroy Somer1Alternator Amazon eBay
LLB3114HLeroy Somer1Alternator 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
Emergency50%5.41.4
Emergency75%9.02.4
Emergency100%13.33.5
Prime100%11.73.1
Standby50%4.81.3
Standby75%8.02.1
Standby100%13.33.5

Available documents

Spec sheet — NEW Product Rating(ES)(0213) (FG Wilson)Spec sheet — Options Matrix (IT)(0513) (FG Wilson)Spec sheet — P55-2(4PP)IT(0211) (FG Wilson)Reference — P55-2-(4PP)GB(0810) (FG Wilson)