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SDEC 204kW Diesel Engine 6DTAA8.9-G21
SDEC 204kW Diesel Engine 6DTAA8.9-G21
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SDEC 253kW Diesel Engine 6DTAA8.9-G23

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Representing a highly advanced, high-yield iteration of SDEC’s heavy industrial D Series platform, the SDEC 253kW Diesel Engine 6DTAA8.9-G23 is a multi-speed 8.82L inline 6-cylinder G-Drive engine built to master intense backup power demands and continuous prime utility applications. This configuration is structurally enhanced to act as the massive mechanical backbone for 250kVA to 275kVA generator packages. Armed with a built-in air-to-air charge air cooler (CAC) alongside its high-pressure turbocharging assembly, this powerhouse guarantees exceptional transient load handling and highly accurate voltage frequency stabilization during steep block load switchings.

Outputting a rigorous 253kW standby rating at 1500 RPM (50Hz), this heavy-duty variant easily handles critical industrial inductive spikes without dropping rotational speed. It features a high-capacity 25-litre lubrication oil pan, structural wet-liner sleeves, and a 24V twin-battery electrical starter layout. These rugged attributes make it a remarkably dependable asset against the punishing heat cycles and dusty environments common to South African processing hubs, regional mines, and agricultural co-ops.

LiFeTIDE supplies this premium engine with comprehensive installation engineering support, deeply stocked warehouse spares, and rapid cross-border shipping networks.

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 253kW Diesel Engine

The SDEC 6DTAA8.9-G23 sets a benchmark for raw physical stamina in the 8.9L bracket, utilising an optimised 16.5:1 compression ratio and an aggressive 4-valve per cylinder overhead valve geometry (2 intake and 2 exhaust valves per cylinder) that dramatically maximises volumetric efficiency. The structural blueprint relies on heavy-duty wet cylinder liners to shield the block from extreme piston-stroke friction, circulating cooling fluid directly around the sleeves to eliminate localised hot spots during use. This heavy cast framework features a robust cross-flow head configuration that effectively isolates intense operating pressures, ensuring superior structural longevity across harsh, continuous operating cycles.

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ENGINE DATA SHEET

Industrial Power Architecture & Reliability

Designed with an integrated cylinder head and a high-strength cast-iron block, the 6DTAA8.9-G23 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 253kW 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 900 kg
Dimensions 149.3 × 79.2 × 130.9 cm
Brand

SDEC
Product Type

Diesel Engine
Prime Power (kW)

230kW
Standby Power(kW)

253kW
Prime Power

250kVA
Standby Power

275kVA
Engine Type

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

Turbo Charged with Aftercooler
Cylinder Type

Dry Liner
Cylinders

6 Cylinders
Bore × Stroke

114mm x 144mm
Displacement

8.82L
Compression Ratio

16.5 : 1
Firing Order

1-5-3-6-2-4
Injection Timing

7.5°BTDC
Flywheel Housing (SAE)

SAE NO.2
Flywheel Clutch Size (Inches)

SAE NO.11.5（geartooth number:125）
Fuel Consumption @ 100%

55.1 l/h
Fuel Consumption @ 75%

40.7 l/h
Fuel Consumption @ 50%

27.7 l/h
Fuel Consumption @ 25%

15.9 l/h
Injection Pump

Longkou 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: 0.30mm, Exhaust: 0.55mm
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: 25 litres, Low Level: 22 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: 29.5°BTDC, Closing: 42.5°ABDC
Exhaust Valve Timing

Opening: 69.5°BBDC, Closing: 34.5°ATDC
Cooling Method

Fresh Water Forced Circulation
Water Capacity (Engine Only)

12 litres
Lid Minimum Pressure

70kPa
Water Pump

Centrifugal Type Driven by Belt
Water Pump Capacity

200L/min
Thermostat

Wax–pellet Type. Opening Temp. 82°C, Full Open Temp. 93°C
Cooling Fan

Plastic Blower. 762 mm diameter, 10 blades
Heat Rejection to Coolant

23.1 kcal/sec
Exhaust Gas Flow

31.6 m3/min
Exhaust Gas Temperature

600 °C
Charging Generator

28V×55A
Voltage Regulator

Built-in IC Regulator
Starting Motor

24V×7.5 kW
Battery Voltage

24V
Battery Capacity

180 AH
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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.

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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.