Click to enlarge
SDEC 88kW Diesel Engine 4HT4.3-G23
SDEC 88kW Diesel Engine 4HT4.3-G23
Back to products
3kW Growatt Load Shedding Kit. 2560Wh Lithium Battery for Solar. 3kW Growatt Inverter for Sale. Battery Backup Kit
3kW Growatt Load Shedding Kit | 2560Wh LiFePO4 Battery

SDEC 105kW Diesel Engine 4HTAA4.3-G21

Need help choosing the right power equipment? Call us today!
Werner: +27 84 572 6178

Engineered for heavy-duty industrial and agricultural backup power architectures, the  SDEC 105kW Diesel Engine 4HTAA4.3-G21 is a highly efficient 4.3L, inline 4-cylinder G-Drive diesel engine belonging to SDEC’s modern HT Series platform. Purpose-built to function as a highly resilient mechanical heart for 100kVA–110kVA generating sets, this engine utilises an advanced valve layout combined with a precision-tuned electric governor and a turbocharger with air-to-air aftercooler to safeguard flawless power delivery across varying load demands.

With a maximum standby rating of 105kW at 1500 RPM (50Hz), this engine delivers superior transient response and exceptional motor-starting torque curves. Designed to run reliably under harsh climate variances within the South African and broader Sub-Saharan infrastructure grids, the 4HTAA4.3-G21 incorporates a dry-liner block setup, an integrated internal lubrication structure to prevent external line leaks, and a high-capacity water-cooled radiator kit.

LiFeTIDE backs every SDEC assembly with complete technical advice, deep warehouse parts inventory, and efficient cross-border freight distribution.

SDEC
RELIABLE POWER GENERATION

SDEC was founded in 1947 and is a generator manufacturer and supplier. They are ISO9001, QS9000 and TS16949 certified, which is testament to their quality and reliable performance.

ABOUT THE ENGINE
GENERAL SPECIFICATIONS

SDEC 105kW Diesel Engine

The SDEC 4HTAA4.3-G21 is a vertical inline, four-stroke water-cooled G-Drive plant designed for multi-speed operational flexibility. By utilising a ruggedised cast-iron block structure paired with 4 overhead valves per cylinder and advanced air-to-air charge cooling, this engine provides superior structural integrity and optimised thermal dissipation. The dry-liner layout simplifies field maintenance, while the advanced mechanical design cuts component counts, dramatically reducing potential leakage pathways and raising long-term operational uptime.

1-3-h-series-industrial-diesel-engine_02
1-3-h-series-industrial-diesel-engine_05
1-3-h-series-industrial-diesel-engine_04
1-3-h-series-industrial-diesel-engine_03
ENGINE DATA SHEET

Industrial Power Architecture & Reliability

Designed with an integrated cylinder head and a high-strength cast-iron block, the 4HTAA4.3-G21 utilises premier international component brands to ensure absolute mechanical integrity under rigorous load cycles. Its advanced, high-efficiency four-valve layout guarantees optimal fuel atomisation and torque delivery, making it the preferred choice for local generator builders requiring reliable prime and standby power for commercial, agricultural, and industrial infrastructure. With a simplified layout that drastically reduces part-count complexity, this engine lowers long-term operational overhead while maximising field uptime under demanding African environmental conditions.

SDEC 105kW Engine Technical Features

  • Advanced 4-Valve Architecture: Features an integrated cylinder head design and a heavy-duty cylinder block, incorporating tier-one international components to maximise thermal efficiency and structural longevity.

  • Automotive-Grade Quality Infrastructure: Manufactured to the strict quality control matrix of SAIC Motor and verified by world-class German automotive production systems, ensuring absolute product consistency and balanced performance.

  • Simplified Mechanical Framework: The structural blueprint relies on integrated components, reducing total part count compared to conventional diesel powertrains. This results in simplified field maintenance and lower spare parts overhead.

  • Strong Environmental Resilience: Engineered for instantaneous starting capability without an intake pre-heater down to minus 10°C, and extending down to minus 30°C utilising an auxiliary heating device for absolute grid-independence in any environment.

  • Regulated Emission Compliance: Engineered to meet strict global industrial standards, matching the Off-Road Stage II emission framework for cleaner, highly efficient fuel consumption profiles.

PRODUCT SPECIFICATIONS

Weight 450 kg
Dimensions 108 × 73.8 × 107.8 cm
Brand

SDEC
Product Type

Diesel Engine
Prime Power (kW)

95kW
Standby Power(kW)

105kW
Prime Power

100kVA
Standby Power

110kVA
Engine Type

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

Turbo Charged with Aftercooler
Cylinder Type

Dry Liner
Cylinders

4 Cylinders
Bore × Stroke

105mm × 124mm
Displacement

4.3L
Compression Ratio

16 : 1
Firing Order

1-3-4-2
Injection Timing

10°BTDC
Flywheel Housing (SAE)

SAE NO.3
Flywheel Clutch Size (Inches)

SAE NO.11.5 (gear tooth number:127)
Fuel Consumption @ 100%

23 l/h
Fuel Consumption @ 75%

14.3 l/h, 17.1 l/h
Fuel Consumption @ 50%

11.8 l/h
Fuel Consumption @ 25%

6.5 l/h
Injection Pump

Inline "P" Type
Governor

Electronic Regulator
Feed Pump

Mechanical Type
Injection Nozzle

Multi hole Type
Opening Pressure

250 kg/cm2
Fuel Filter

Full Flow, Cartridge Type
Fuel Type

Diesel Fuel Oil
Mechanism Type

Overhead Valve
Number of Valves

Intake: 2, Exhaust: 2 Per Cylinder
Valve Lashes - Cold

Intake: 0.25mm, Exhaust: 0.50mm
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: 3 litres, Low Level: 11 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: 20.9°BTDC, Closing: 44.9°ABDC
Exhaust Valve Timing

Opening:51.7°BBDC, Closing: 11.7°ATDC
Cooling Method

Fresh Water Forced Circulation
Water Capacity (Engine Only)

6.8 litres
Lid Minimum Pressure

70kPa
Water Pump

Centrifugal Type Driven by Belt
Water Pump Capacity

155L/min
Thermostat

Wax–pellet Type. Opening Temp. 82°C, Full Open Temp. 95°C
Cooling Fan

Plastic Blower, 550mm diameter, 9 blades
Heat Rejection to Coolant

11.3kcal/sec
Air Flow

6.8m3/min
Exhaust Gas Flow

13.2m3/min, 16.1m3/min
Exhaust Gas Temperature

600 °C
Maximum Permissible Altitude

2000 m
Charging Generator

14V×80A
Voltage Regulator

Built-in IC Regulator
Starting Motor

12V×4.2kW
Battery Voltage

12V
Battery Capacity

120 AH
Categories: ,
From Leading Global Facilities Straight to Your Project Site

World-Class Manufacturing, Streamlined Distribution

At LiFeTIDE, we bypass intermediate brokers to align your business directly with the world’s most advanced powertrain and electrical component manufacturing facilities. We secure tier-one access to state-of-the-art production lines including the globally acclaimed SDEC and Baudouin facilities.

Every engine, alternator, and component we source is manufactured under stringent international quality controls and rigorously tested for the harsh operational profiles of Sub-Saharan Africa.

From individual component integration for local generator builders to turnkey commercial 3-phase setups, our managed logistics network ensures seamless factory-to-site delivery, guaranteed stock availability, and uncompromised engineering integrity.

Seamless Supply and Delivery Channels

Sub-Saharan Logistics Infrastructure

Managing heavy engineering components and high-capacity standby power systems across African borders requires absolute precision, established freight channels, and ironclad regulatory compliance.

At LiFeTIDE, our logistics framework is built to handle the complex weight of heavy industrial transport. We coordinate the entire lifecycle of your asset from secure international factory container loading and local port clearance to heavy-haul overland distribution.

Whether you are a generator builder in Johannesburg requiring bulk engine shipments or a registered trade dealer anywhere in Southern Africa, we have you covered.

Our cross-border freight routes are fully optimised to navigate customs frameworks, minimise port delays, and guarantee predictable delivery timelines directly to your facility or project site.

RELATED PRODUCTS

Compare
Quick view

SDEC 68kW Diesel Engine 4HT4.3-G22

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 LiFeTIDE offer installation?

No, LiFeTide do not offer any installation services, but, any qualified electrician can install the Pre-Configured LiFeTIDE Loadshedding Kit.

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 if registered on our warranty form along with a valid COC and images of the installation. It is a limited warranty. The goods need to be returned to us as per our standard Terms and Conditions of Sale.

Price validity

All pricing is valid while stocks last as reflected on this website page for the product listed, as specified herein and subject to change without prior notification. Â