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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. The same 1104C-44TG2/3 engine also powers generator sets from Caterpillar and Olympian.

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

Filters for the Perkins 1104C-44TG2/3

4

Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.

SystemFilterDescriptionCross-references
Oil filterP554407Lube Filter, Spin-On Full FlowPERKINS 102632, PERKINS 2564401, NAPA 1459, BALDWIN BT237 KuduParts $25.00 FridayParts $26.84
Oil filterP550299Lube Filter, Spin-On Full FlowPERKINS 2254347, BALDWIN BT251, WALGAHN-MOTORENTECHN 00811293, LOESING 025037 buy
Fuel filterP502420Fuel Filter, CartridgePERKINS 2656F823, PERKINS 4415122, NAPA 600488, CLAAS 0011377510 buy

Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:

SystemFilterDescriptionCross-references
Fuel / water separatorP550588Fuel Filter, Water Separator Spin-On Twist&DrainPERKINS 265118, PERKINS T64102003, NAPA 3472, BALDWIN BF587-D FridayParts $18.44

Same engine, other brands

2 brands

The Perkins 1104C-44TG2/3 in this set also powers 2 generator sets sold under 2 other brands. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
CaterpillarXQE60-2
OlympianXQE60-2

Maintenance & consumables

for the Perkins 1104C-44TG2/3
ItemSpecCapacityPart #Interval
Air filterElemento sostituibile—12000 hr
Fuel filterElemento sostituibile—1020 hr
Oil filterElemento sostituibile—12000 hr
Battery12/Negative1002T100 hr Amazon eBay
BeltCentrifugo—1500 hr
Coolant—1500 hr
OilAPI CC/SE—800 hr
Spark plug—1500 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 is the cooling system capacity of the FG Wilson P55-2?

The FG Wilson P55-2 cooling system holds 13 liters (3.4 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the prime power rating of the FG Wilson P55-2?

The FG Wilson P55-2 is rated 40 kW prime (50 kVA), against 44 kW standby.

How much does the FG Wilson P55-2 weigh?

The FG Wilson P55-2 has a dry weight of 957 kg (2109 lb).

How big is the fuel tank on the FG Wilson P55-2?

The FG Wilson P55-2 has a 219 liter (58 US gallon) fuel tank, giving about 57.9 hours of runtime.

What voltage does the FG Wilson P55-2 produce?

The FG Wilson P55-2 is offered in 415/240 V, 400/230 V, 380/220 V, 3-phase.

What size battery does the FG Wilson P55-2 need?

The FG Wilson P55-2 uses 1 battery, 12 V each, group 1002T, per the manufacturer specification sheet.

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)

This page was generated from the 4 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.