Baudouin 405kW Diesel Engine 6M21G440/5

Need help choosing the right product?

Bradley: +27 62 743 5089 | bradley@sdecpower.co.za
Ruan: +27 66 511 2009 | ruan@sdecpower.co.za

We offer industry leading 24 month / 1,000 hour warranties on our engines and diesel generators.

The Baudouin 405kW Diesel Engine (6M21G440/5) is an inline six cylinder engine designed for high demand processing plants, agricultural irrigation systems, commercial and industrial applications. This 12.5 litre model provides the energy for 400kVA prime to 440kVA standby generators.

  • Power Output: Supplies 405kW standby output at 1500 RPM (50Hz) and prevents frequency drops under sudden load changes.
  • Air Management: Combines single stage exhaust turbo charging with air to air cooling for fast load recovery.
  • Starting System: Features a 24V dual battery electrical design with a 7.5kW starter motor and a 70A charging alternator.
  • Support & Parts: Distributed by The Generator King with technical alignment assistance and direct access to genuine OEM spare parts.

We offer delivery across Sub-Saharan Africa at the best prices.

LEADING GENERATOR MANUFACTURER

Baudouin was founded in 1918 and is a premier diesel engine manufacturer. They are ISO9001, ISO14001 and ISO45001 certified, which is testament to their quality and reliability.

GENERAL SPECIFICATIONS

Baudouin 405kW Diesel Engine

Heavy Duty Industrial Power

The 6M21G440/5 uses a 12.5 litre displacement inline six cylinder layout to deliver steady power output. It connects directly to industrial alternators to power large scale industrial plants, regional irrigation systems and commercial facilities during grid failures.

Temperature and Climate Control

Equipped with efficient cooling, the engine operates in ambient temperatures reaching up to 50°C. The internal cooling circuits route fluid continuously around the six cylinder block to maintain thermal stability and protect internal components.

Turbo Charged Air Intake

The engine uses single stage turbo charging paired with an air to air intercooler system. This increases air intake density to improve combustion, enabling fast recovery when large electrical loads connect to the circuit.

Electrical Starting

A 24V starter, powered by a 7.5kW motor and backed by a 70A charging alternator, ensures quick cranking. This design allows automatic transfer controls to bring the engine online without delay when power drops.

Key Technical Features
  • Combustion Efficiency: Optimised fuel delivery and air intake management keep fuel consumption lower.
  • High Temperature Operation: Designed to maintain continuous performance in hot climates without dropping output capacity.
  • Dependable Starting: The starter motor delivers quick mechanical engagement across all weather conditions.
  • Standardised Production: Built to European manufacturing standards to ensure reliable performance across applications.

PRODUCT SPECIFICATIONS

Weight 1000 kg
Dimensions 201.1 × 109.6 × 136.3 cm
Brand

Baudouin

Product Type

Diesel Engine

Prime Power (kW)

368kW

Standby Power(kW)

405kW

Prime Power

400kVA

Standby Power

440kVA

Cylinders

Cylinders: 6, Valves: 24

Cylinder Arrangement

Inline

Bore × Stroke

127mm x 165mm

Displacement

12.54L

Thermodynamic Cycle

Diesel 4 Stroke

Mean Piston Speed (m/s)

8.25 m/s

BMEP @ ESP (Bar)

25.84 Bar

Cooling System

Liquid (water + 50% antifreeze)

Injection System

Direct Injection

Fuel System

Mechanical Pump

Aspiration

Turbo Charged with Aftercooler

Compression Ratio

16 : 1

Flywheel Housing (SAE)

SAE NO.1

Flywheel Clutch Size (Inches)

14"

Teeth on Flywheel Ring Gear

136 Teeth

Inertia of flywheel (kg•m²)

2.32 kg•m²

Inertia of crankshaft (kg•m²)

0.574 kg•m²

Emission Standard

N/A

Air Intake Temperature Rise

≤ 15°C

Minimum Diameter of Intake Pipe (mm)

100mm

Aftercooler System Type

Air to Air

Oil Capacity (L)

High Level: 30 litres, Low Level: 27 litres

Oil pressure in normal condition at 1500 Rpm @ PRP (Bar)

3.5 Bar – 5.5 Bar

Maximum Oil temperature (°C)

105°C

Oil Flow at 1500RPM (L/min)

≥ 180 L/min

Total Heat Dissipation @ ESP (kJ/s)

554.7 kJ/s

Maximum Exhaust Back Pressure (mBar)

120 mBar

Maximum Exhaust Temperature Before Turbocharger (°C)

740°C

Maximum Exhaust Temperature After Turbocharger (°C)

580°C

Exhaust Gas Flow

63 m³/min

Minimum Diameter of Exhaust Pipe (mm)

100mm

Maximum Bending Moment of Exhaust Gas Exit Flange (Nm)

19 Nm

Governor

Electronic Regulator

Governor Steady State Speed Stability at Constant Load (ISO 8528-5 Class G3)

≤ +/- 0.5 %

Fuel Supply Flow (L/hr)

169 L/hr

Fuel Type

Diesel Fuel Oil

Electrical System Voltage (negative to ground) (Vdc)

24Vdc

Starter Power (kW)

7.5kW

Battery Charger Current (A)

70A

Battery Charger Absorbed Power (kW)

1.96kW

Diesel Engine Noise (Acoustic Power Level) (dB(A))

112.3 dB

Fuel Consumption @ 100%

85.5 l/h

Fuel Consumption @ 75%

63.5 l/h

Fuel Consumption @ 50%

43.2 l/h

Fuel Consumption @ 25%

23.4 l/h

Category:
A partner in power generation

World Class Manufacturing, Fast Regional Distribution

The Generator King is the sole authorised distributor of StromerPower Alternators in Sub-Saharan Africa. By dealing with us directly you cut out the middlemen, saving you time and money.

Every engine, alternator, and spare part we supply is built to international standards and fully tested to handle tough conditions. Whether you are a local generator builder looking for a StromerPower alternator, a diesel engine, OEM spare parts or a business needing a complete power setup, we ensure fast delivery, large stock availability and reliable performance.

STROMERPOWER FACTORY |  MANUFACTURING & ASSEMBLY LINE

Our Delivery Channels

Sub-Saharan Logistics

We ship StromerPower alternators, leading brand diesel engines and OEM diesel generators as well as OEM spare parts throughout South Africa and across the continent, including Namibia, Botswana, Malawi, Mozambique, Zambia, Zimbabwe, Swaziland, and Lesotho.

Our team handles the entire logistics process, from factory  loading to cross border transport, ensuring your equipment arrives safely and on time.

We hold a large volume of stock and genuine replacement parts at our warehouses so we can supply clients across Africa quickly and efficiently.

FREQUENTLY ASKED QUESTIONS

Does the price include installation?

No, installation is not included in the price. Any qualified electrician can install the kit and provide a Certificate of Compliance (COC) for the installation as per legislation.

Do you offer installation?

No, we do not offer any installation services, but, any qualified electrician can install our products.

Does the price include delivery?

Delivery is not included in any of the prices. However, delivery will be calculated in your cart at checkout based on your location and product selection.

Tell me about the Warranty

Our product warranty  is detailed on each product page and as per our standard terms along with a valid COC. It is a limited warranty.

Price validity

All pricing is valid while stocks last as reflected on your quotation, as specified therein.