CAT® C9.3 ACERT™ DIESEL ENGINE
Demanding conditions, applications and environments make the Cat® engines in the C9.3 ACERT engines the perfect solution for your severe duty equipment. With decades of diesel engine innovation and expertise behind these engines, they deliver the low operating costs and legendary Cat reliability and durability that give you a powerful advantage. More importantly, they're backed by the world-class Cat dealer network ready to service and support every Cat industrial engine. Industries and applications powered by C9.3 ACERT engines include: Agriculture, Ag Tractors, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Combines/Harvesters, Compactors/Rollers, Compressors, Construction, Cranes, Crushers, Dredgers, Forestry, Forklifts, General Industrial, Hydraulic Power Units, Irrigation Equipment, Loaders/Forwarders, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Sweepers, Paving Equipment, Pumps, Shovels/Draglines, Specialty Ag Equipment, Sprayers, Surface Hauling Equipment, Trenchers and Underground Mining Equipment. Cat® C9.3 ACERT™ Industrial Diesel Engines, with ratings: 224-298 bkW (300-400 bhp) @ 1800-2200 rpm, meet U.S. EPA Tier 4 Interim, EU Stage IIIB emission standards and are designed to meet U.S. EPA Tier 4 Final, EU Stage IV emission standards. This information about Emissions describes the particular rating's emissions technology. For more information about emissions certification, please contact your local Cat dealer.
power rating
Minimum Power224.0 bkW
Maximum Power298.0 bkW
Rated Speed1800-2200 rpm


emission standards
EmissionsU.S. EPA Tier 4 Final Nonroad, EU Stage IV Nonroad, U.S. EPA Tier 4 Interim Nonroad Equivalent (Not Currently EPA Certified) and EU Stage IIIB Nonroad Equivalent (Non-Current for EU) Emission Standards
general
Engine ConfigurationIn-Line 6, 4-Stroke-Cycle Diesel
Bore115 mm (4.53 in)
Stroke149 mm (5.87 in)
Displacement9.3 L (567.5 in³)
AspirationTurbocharged-Aftercooled (TA)
Compression Ratio17.0:1
Combustion SystemDirect Injection
Rotation (from flywheel end)Counterclockwise
Cooling System Capacity22 L (23.6 qts)
Lube System (refill)30 L (31.7 qts)
engine dimensions approximate final dimensions dependent on selected options
Length1119-1150 mm (44.0-45.3 in)
Width827-1025 mm (32.6-40.4 in)
Height1066-1123 mm (41.9-44.2 in)
Weight - Net Dry (Basic Operating Engine Without Optional Attachments)885 kg (1950 lb)
aftertreatment dimensions approximate final dimensions dependent on selected options
Length885-925.89 mm (34.8-36.45 in)
Width714.4-870 mm (28.12-34.4 in)
Height392.21-570 mm (15.44-22.4 in)
Weight210-213 kg (463-470 lb)
petu dimensions tier 4 final stage iv only
Length854 mm (33.6 in)
Width287 mm (11.3 in)
Volume Capacity48.4 L (51.1 qt)
Weight19.42 kg (42.8 lb)
Height551 mm (21.7 in)
C9.3 ACERT™ STANDARD EQUIPMENT
- air inlet system
Turbocharged
Air-to-Air Aftercooled
Mid-mount turbocharged system with front and rear exhaust configurations (Tier 4 Final, Stage IV) - control system
Electronic control system
Over-foam wiring harness
Automatic altitude compensation
Power compensated for fuel temperature
Configurable software features
Engine monitoring system SAE J1939 broadcast and control
Integrated Electronic Control Unit (ECU)
Remote fan control - cooling system
Vertical or RH thermostat outlet
Centrifugal water pump
Guidance on cooling system design available through your dealer to ensure equipment reliability - flywheels and flywheel housing
Dual rear PTO configuration
Available SAE No. 1 power take off with optional SAE A, SAE B or SAE C power take off drives. Engine power can also be taken from the front of the engine with optional attachments. (Tier 4 Final, Stage IV). - fuel system
Electronic high pressure common rail
Primary fuel filter
Secondary fuel filters
Fuel transfer pump
Electronic fuel priming - lube system
Open crankcase ventilation system
Oil cooler
Oil filler
Lube oil filter
Oil dipstick
Gear driven oil pump
Choice of front, rear or center sumps
Open crankcase ventilation system with fumes disposal (optional OCV filter system) (Tier 4 Final, Stage IV) - power take off pto
SAE A, SAE B or SAE C power take off (PTO) drives. Engine power can also be taken from the front of the engine on some applications. - general
Paint: Caterpillar yellow, with optional colors available at request
Vibration damper
Lifting eyes - us epa tier 4 interim eu stage iiib aftertreatment clean emissions control equipment
Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
NOx Reduction System (NRS)
Flex pipe connection kit with 90° rotatable elbows to attach to Cat Regeneration System Inlet
Available in 12 volt or 24 volt systems - us epa tier 4 final eu stage iv aftertreatment clean emissions control equipment
Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
Aftertreatment Electronic Control Unit (ECU)
NOx Reduction System (NRS)
Pump Electronic Control Unit (PETU)
Selective Catalytic Reduction (SCR)
Available in 12V or 24V systems