SDEC 44kW Diesel Engine 4ZT3.2-G21

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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 SDEC 44kW Diesel Engine (4ZT3.2-G21) is an inline, four stroke engine built for moderate standby power demands, commercial operations, and pump systems. This turbocharged model is configured for 40kVA to 44kVA generators, providing stable load management within a smaller physical footprint.

  • Power Output: Delivers 44kW standby power at 1500 RPM (50Hz) and responds exceptionally well during sudden load transitions.
  • Turbocharged Efficiency: An upgraded, high-output variant within SDEC’s compact engine line, maximising power without adding unnecessary bulk.
  • Local Suitability: Built with an integrated wet-liner configuration and a compact block suited for typical South African and African conditions.
  • Support & Delivery: Backed by The Generator King with technical assistance, fast cross-border shipping, and immediate stock of genuine OEM parts.

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

RELIABLE POWER GENERATION

SDEC was founded in 1947 and is a diesel engine manufacturer. They are ISO9001, QS9000 and TS16949 certified, which is testament to their quality and reliability.

GENERAL SPECIFICATIONS

SDEC 44kW Diesel Engine

High Output Turbocharged Performance

As an upgraded model in SDEC’s smaller displacement line, the 4ZT3.2-G21 uses turbocharging to deliver excellent power while maintaining a small physical size. This makes it an ideal fit for commercial setups that need a reliable, space saving engine that handles sudden electrical loads smoothly.

Reliable Cooling for African Conditions

The engine features an integrated wet-liner design that keeps internal temperatures completely stable. By routing cooling fluid directly around the cylinder sleeves, it prevents hotspots during extended runs, minimises mechanical wear, and ensures stress free operation in typical African environments.

Strength and Efficiency

Built with a high strength cast iron block and an integrated cylinder head, this engine is designed to handle demanding mid-range workloads. It features an advanced four-valve layout that improves airflow, optimises fuel consumption, and delivers consistent torque. This makes it an excellent fit for commercial, agricultural, and light industrial applications that need steady backup power. The straightforward mechanical design removes unnecessary complexity, making maintenance easier and keeping your operations running smoothly.

Key Technical Features

  • Durable Engineering: The robust cylinder block and integrated head use top tier components to maximise fuel efficiency and extend the engine's service life.

  • Precision Manufacturing: Built under strict SAIC Motor quality controls and verified by German automotive production standards for reliable consistency and performance.

  • All-Weather Starting: Starts instantly without a pre-heater in temperatures down to -10°C, and handles extreme cold down to -30°C when using an auxiliary heater.

  • Clean Burning: Meets Off-Road Stage II emission frameworks, providing a highly efficient fuel burn and lower emissions.

PRODUCT SPECIFICATIONS

Weight 275 kg
Dimensions 84.8 × 60.8 × 90.9 cm
Brand

SDEC

Product Type

Diesel Engine

Prime Power (kW)

39kW

Standby Power(kW)

44kW

Prime Power

40kVA

Standby Power

44kVA

Engine Type

In-line, 4 Strokes, 4 Valves, Water-cooled

Aspiration

Turbo Charged

Cylinder Type

Dry Liner

Cylinders

4 Cylinders

Bore × Stroke

98mm x 105mm

Displacement

3.2L

Compression Ratio

18 : 1

Firing Order

1-3-4-2

Injection Timing

14° – 17°

Flywheel Housing (SAE)

SAE NO.4

Flywheel Clutch Size (Inches)

SAE NO.7.5 (gear tooth number:115)

Fuel Consumption @ 100%

10.1 l/h

Fuel Consumption @ 75%

7.6 l/h

Fuel Consumption @ 50%

5.3 l/h

Fuel Consumption @ 25%

3.3 l/h

Injection Pump

KangDa

Governor

Electronic Regulator

Feed Pump

Mechanical Type

Injection Nozzle

Multi hole Type

Opening Pressure

24MPa

Fuel Filter

Full Flow, Cartridge Type

Fuel Type

Diesel Fuel Oil

Mechanism Type

Overhead Valve

Number of Valves

Intake: 1, Exhuast: 1 Per Cylinder

Valve Lashes - Cold

Intake: 0.35mm, Exhaust: 0.45mm

Lubrication Method

Fully Forced Pressure Feed Type

Oil Pump

Gear Type Driven by Crankshaft

Oil Filter

Full Flow, Cartridge Type

Oil Pan Capacity

High Level: 7 litres, Low Level: 6 litres

Lubrication Angularity Limit

Front Down: 25 degrees, Front Up: 35 degrees, Side to Side: 35 degrees

Lubrication Oil

Refer to Operation Manual

Intake Valve Timing

Opening: 15°BTDC, Closing: 30°ABDC

Exhaust Valve Timing

Opening: 45°BBDC, Closing: 13°ATDC

Cooling Method

Fresh Water Forced Circulation

Water Capacity (Engine Only)

5.75 litres

Lid Minimum Pressure

70kPa

Water Pump

Centrifugal Type Driven by Belt

Water Pump Capacity

155L/min

Thermostat

Wax–pellet Type. Opening Temp. 72°C, Full Open Temp. 82°C

Cooling Fan

Plastic Blower. 490 mm diameter, 7 blades

Heat Rejection to Coolant

4.3kcal/sec

Air Flow

4.1m3/min

Exhaust Gas Flow

11.1m3/min

Exhaust Gas Temperature

550 °C

Maximum Permissible Altitude

2000 m

Charging Generator

14V×35A

Voltage Regulator

Built-in IC Regulator

Starting Motor

12V×3.8kW

Battery Voltage

12V

Battery Capacity

120 AH

Category:
A partner in power generation

World-Class Manufacturing, Fast Regional Distribution

We source and manufacture high-quality generators, engines, and parts directly from leading global factories, including SDEC. 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 South African conditions. Whether you are a local generator builder looking for loose components or a business needing a complete commercial power setup, we ensure fast delivery, guaranteed stock availability, and dependable performance.

SDEC FACTORY | ROBOTIC ENGINE MANUFACTURING ASSEMBLY LINE

Our Delivery Channels

Sub-Saharan Logistics

We ship SDEC engines, diesel generators, alternators and 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.Â