Kirloskar SL Series diesel engines are liquid-cooled, four-stroke engines designed for industrial applications, including dedicated fire-fighting configurations. The range includes turbocharged and turbocharged-aftercooled variants engineered for constant-speed operation and integration with compatible fire-fighting pump systems.
With an 8.8-litre displacement, heavy-duty engine components, a 24V starting system and dedicated fire-fighting equipment provisions, the SL Series offers engine options for appropriately matched fire-fighting installations.
The Kirloskar SL Series includes the 6SL9088T, 6SL9088TA, 6SL1500TA and 6SL8800TA engine models. These are vertical, liquid-cooled, four-stroke diesel engines with turbocharged or turbocharged-aftercooled configurations.
The fire-fighting configuration includes essential engine equipment such as a fuel injection pump, 24V starter and battery-charging alternator, fuel and lubricating-oil filtration, engine control panel and wiring harness. Cooling arrangements can use a radiator and fan or a heat exchanger, depending on the installation.
The engine must be selected to match the fire pump’s required speed, torque and power demand. The complete installation should also be checked against the applicable fire-protection system requirements.
Key Features and Benefits
Available Models
| Model | Engine configuration | Displacement | Compression ratio |
| 6SL9088T | Turbocharged | 8,800 cc | 17.5:1 |
| 6SL9088TA | Turbocharged-aftercooled | 8,800 cc | 17.5:1 |
| 6SL1500TA | Turbocharged-aftercooled | 8,800 cc | 17.5:1 |
| 6SL8800TA | Turbocharged-aftercooled | 8,800 cc | 15.5:1 |
General Technical Specifications
| Parameter | Specification |
| Engine series | Kirloskar SL Series |
| Engine orientation | Vertical, in-line |
| Engine cycle | Four-stroke |
| Ignition type | Compression ignition |
| Cooling system | Liquid-cooled |
| Bore × stroke | 118 × 135 mm |
| Displacement | 8,800 cc |
| Minimum operating speed | 1,500 rpm |
| Low idle speed | 650 rpm |
| Maximum operating speed | Up to 2,100 rpm, subject to model and duty rating |
| Direction of rotation | Counter-clockwise when viewed from the flywheel end |
| Starting system | 24V starter and battery-charging alternator |
| Fuel injection | MICO / Motorpal fuel injection pump |
| Lubrication | Gear-driven lubricating-oil pump |
| Cooling options | Radiator and fan or heat-exchanger cooling |
| Flywheel housing | SAE 1 |
| Engine coupling | Holset or equivalent coupling, as specified |
| Engine mounting | Rigid mounting foot |
Fire-Fighting Standard Equipment
The fire-fighting engine configuration includes:
The exact scope should be confirmed for the selected model and installation.
Optional Equipment
Depending on application requirements, optional equipment may include:
Options and their compatibility must be confirmed for the chosen engine model.
Engine Dimensions and Weight
The following figures are provided as preliminary installation references. Confirm the exact installation drawing before designing the pump skid or engine base.
| Model | Dimension A | Dimension B | Dimension C | Dimension D | Dry weight with SAE 1 flywheel and radiator |
| 6SL9088T | 1,793 mm | 980 mm | 1,581 mm | 255 mm | 1,200 kg |
| 6SL9088TA | 1,762 mm | 1,181 mm | 1,581 mm | 255 mm | 1,300 kg |
| 6SL1500TA | 1,975 mm | 1,181 mm | 1,581 mm | 255 mm | 1,400 kg |
| 6SL8800TA | 1,975 mm | 1,181 mm | 1,581 mm | 255 mm | 1,400 kg |
All dimensions are in millimetres. Actual installation dimensions may vary with the application and selected equipment.
Fire-Fighting Pump Systems
The SL Series includes a specified fire-fighting equipment configuration intended for integration with a compatible fire pump. Correct selection depends on the pump duty, required engine speed, transmitted torque and applicable system requirements.
Industrial Constant-Speed Applications
The series also covers industrial constant-speed applications. Engine ratings and configuration must be selected according to the required duty and operating conditions.
Fire Protection Installations
For fixed fire-protection systems, the engine, pump, cooling arrangement, controls and associated equipment must be selected and verified as a complete system. Confirm the required approvals and compliance of the proposed installation before specifying the engine.
The Kirloskar SL Series is a family of liquid-cooled, four-stroke diesel engines with turbocharged and turbocharged-aftercooled configurations. The range includes a dedicated fire-fighting equipment configuration.
The models covered here are 6SL9088T, 6SL9088TA, 6SL1500TA and 6SL8800TA. Confirm the exact model designation and current availability when requesting a quotation.
The specified displacement for all four models is 8,800 cc, or 8.8 litres.
The fire-fighting configuration provides for radiator-and-fan cooling or heat-exchanger cooling. A make-up water tank is included when the heat-exchanger arrangement is used.
Yes. The specified configuration includes automatic shutdown provisions for low lubricating-oil pressure, high water temperature and engine overspeed.
Selection must account for the fire pump’s required power, operating speed and torque, along with the coupling, cooling arrangement, installation dimensions and applicable fire-protection requirements. The engine and pump should be evaluated together.
Not automatically. Engine ratings must correspond to the selected model and its approved duty classification. Confirm the applicable fire-fighting rating before final selection.
Contact AHCL Auto and Equipment Division with your fire pump specifications, required duty point and installation details. The team can assist with product enquiries and configuration discussions.
AHCL Sales and Service Support
AHCL Auto and Equipment Division supports industrial equipment requirements across Saudi Arabia. Contact the team for Kirloskar engine enquiries, selection assistance, service-related enquiries and genuine spare-parts requirements.
Sales and service enquiries
When enquiring, provide the fire pump model, required flow and pressure, operating speed, intended duty, and preferred cooling arrangement to help the team assess the appropriate engine configuration.
