HomeFG WilsonFG Wilson MJB 200 SB4

FG Wilson MJB 200 SB4 Generator Set

The FG Wilson MJB 200 SB4 is a 40 kW (50 kVA) standby generator set powered by a Perkins 1104C-44TG2/3 engine. It is available at 400 V and 380/220 V, 3-phase and 50 Hz. It holds about 15.9 L (4.2 gal) of oil and 18.9 L (5.0 gal) of coolant, with a maximum ambient rating of 50 °C. The set measures 1336×851×864 mm (52.6×33.5×34.0 in) and weighs about 9 kg (20 lb). An integrated tank holds 17.4 L (4.6 gal).

40 kW
Standby
4.4 L
Displacement
15.9 L
Oil capacity
2
Document types

How to read your FG Wilson serial & model number →

Service parts for the MJB 200 SB4

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

Frequency50.0 Hz
Standby power40 kW
Standby kVA50
Oil capacity15.9 L
AlternatorMarelli Mark V SHUNT
Voltage options400 V, 50 V, 380/220 V
Phase3
Power factor0.8
Circuit breaker[17.4, 4.6] A
Coolant capacity[18.9, 1075] L
Max ambient50 °C
Dimensions (L×W×H)1336×851×864 mm
Dry weight9 kg
Wet weight10 kg
Fuel tank17.4 L

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

What is the power rating of the FG Wilson MJB 200 SB4?

The FG Wilson MJB 200 SB4 is rated 40 kW standby (50.0 kVA).

Which engine powers the FG Wilson MJB 200 SB4?

The FG Wilson MJB 200 SB4 is powered by the Perkins 1104C-44TG2/3 engine.

What's the oil capacity on a FG Wilson MJB 200 SB4?

The Perkins 1104C-44TG2/3 engine in the FG Wilson MJB 200 SB4 has an oil capacity of 8.9 liters.

What alternator comes on the FG Wilson MJB 200 SB4?

The FG Wilson MJB 200 SB4 uses a Marelli Mark V SHUNT alternator.

What oil filter fits the FG Wilson MJB 200 SB4?

The FG Wilson MJB 200 SB4 uses oil filter part numbers FG WILSON 1000065570, FG WILSON 901103.

What fuel filter does the FG Wilson MJB 200 SB4 use?

The FG Wilson MJB 200 SB4 uses fuel filter part numbers FG WILSON 901214, FG WILSON 1000063247.

Which air filter part number does the FG Wilson MJB 200 SB4 take?

The FG Wilson MJB 200 SB4 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
Prime100%30.668.1
Standby50%30.668.1

Available documents

Spec sheet — P50-4(4PP)GB(0514) (FG Wilson)Spec sheet — P55-4(4PP)GB(0514) (FG Wilson)Spec sheet — P55-4(4PP)GB(0813) (FG Wilson)Parts manual — FG-Wilson-Generator-Sets-Brochure (FG Wilson)