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FG Wilson MJB 250 MA4 Generator Set

The FG Wilson MJB 250 MA4 is a 120 kW (150 kVA) standby generator set powered by a Perkins 1006TAG2 engine. It is available at 200/115 V, 230/115 V, 400/230 V, 220/110 V, 380/220 V and 220/127 V, 50 Hz. It holds about 23.3 L (6.2 gal) of oil and 41 L (10.8 gal) of coolant, with a maximum ambient rating of 50 °C. The set measures 2450×1010×1554 mm (96.5×39.8×61.2 in) and weighs about 3294 kg (7262 lb). An integrated tank holds 21.2 L (5.6 gal). The same 1006TAG2 engine also powers generator sets from Perkins.

120 kW
Standby
5.99 L
Displacement
23.3 L
Oil capacity
1
Document types

How to read your FG Wilson serial & model number →

Service parts for the MJB 250 MA4

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

Oil system

1 required

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

Specifications

Frequency50.0 Hz
Standby power120 kW
Standby kVA150
Oil capacity23.3 L
AlternatorMarelli P165-3
Voltage options200/115 V, 230/115 V, 400/230 V, 220/110 V, 380/220 V, 220/127 V
Power factor0.8
Max ambient50.0 °C
Dimensions (L×W×H)2450×1010×1554 mm
Dry weight3294 kg
Wet weight343 kg
Fuel tank21.2 L

Engine

Perkins 1006TAG2
Oil capacity19.0 L
Coolant capacity41.0 L
Displacement5.99 L
AspirationTurbocharged, air-to-air aftercooled
Rated speed1500 rpm

Filters for the Perkins 1006TAG2

5

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 filterP554403Lube Filter, Spin-On Full FlowPERKINS 26540249, NAPA 1806, BALDWIN BT216, VERSATILE 00034778 KuduParts $22.00
Fuel filterP556245Fuel Filter, CartridgePERKINS 26511171, PERKINS 26556611, NAPA 3166, RENAULT VI 0001231108 KuduParts $20.00 FridayParts $22.11
Fuel / water separatorP550588Fuel Filter, Water Separator Spin-On Twist&DrainPERKINS 265118, PERKINS T64102003, NAPA 3472, BALDWIN BF587-D FridayParts $18.44
Fuel / water separatorP551426Fuel Filter, Water Separator CartridgePERKINS 26560920, BALDWIN BF9830-D, SULLAIR 1006374, JCB 320A7128 KuduParts $34.00

Same engine, other brands

1 brand

The Perkins 1006TAG2 in this set also powers 2 generator sets sold under 1 other brand. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
Perkins1006TAG2, OLYMPIAN TM

Maintenance & consumables

for the Perkins 1006TAG2
ItemSpecCapacityPart #Interval
Air filterPaper Element—1000 hr
Fuel filterReplaceable Element—1000 hr
Oil filterElemento sostituibile2654A1111000 hr Amazon eBay $23.99 NAPA $22.21 FridayParts $28.06 KuduParts $48.00
BatteryAZF starter - Battery must not exceed 2400 CCA.×1—1000 hr
BeltM IS 64 HBM IS—1000 hr
CoolantThermostat controlled cooling system—
OilAPI CG4 15W-40—
Spark plug12/Negativo—1800 hr

Common questions

How many kW is the FG Wilson MJB 250 MA4?

The FG Wilson MJB 250 MA4 is rated 120 kW standby (150.0 kVA).

What engine is in the FG Wilson MJB 250 MA4?

The FG Wilson MJB 250 MA4 is powered by the Perkins 1006TAG2 engine.

What's the oil capacity on a FG Wilson MJB 250 MA4?

The Perkins 1006TAG2 engine in the FG Wilson MJB 250 MA4 has an oil capacity of 19.0 liters.

How much coolant does the FG Wilson MJB 250 MA4 hold?

The FG Wilson MJB 250 MA4 cooling system holds 41 liters (10.8 US gallons) for the engine, per the manufacturer specification sheet.

How much does the FG Wilson MJB 250 MA4 weigh?

The FG Wilson MJB 250 MA4 has a dry weight of 3294 kg (7262 lb).

How big is the fuel tank on the FG Wilson MJB 250 MA4?

The FG Wilson MJB 250 MA4 has a 21.2 liter (6 US gallon) fuel tank.

What voltages is the FG Wilson MJB 250 MA4 available in?

The FG Wilson MJB 250 MA4 is offered in 200/115 V, 230/115 V, 400/230 V, 220/110 V, 380/220 V, 220/127 V.

What alternator comes on the FG Wilson MJB 250 MA4?

The FG Wilson MJB 250 MA4 uses a Marelli P165-3 alternator.

What oil filter does the FG Wilson MJB 250 MA4 use?

The FG Wilson MJB 250 MA4 uses oil filter part number 2654A111.

Available documents

Spec sheet — P150-4-P150-4(4PP)GB(1113) (FG Wilson)Spec sheet — P165-3-P165-3(4PP)GB(0114) (FG Wilson)Spec sheet — P165-3-P165-3(4PP)GB(0514) (FG Wilson)

This page was generated from the 3 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.

Full service, cheapest listings

Priced items from this model's own parts manual.

Oil filter 2654A111$22.21
1 priced item$22.21