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Industrial Diesel Engines

Cat® C18 Diesel Engine

Engine Configuration In-Line 6, 4-Stroke-Cycle Diesel
Cooling System Capacity 26.9 L (28.4 qt)
Lube System (refill) 40-74 L (42-78 qt)
Length 1438 mm (56.6 in)

On construction sites and mining operations, in agriculture and forestry, and in a wide range of industries, Cat® C18 Industrial Diesel Engines deliver the power, performance and durability to take on the biggest challenges. 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 C18 engines include: Agriculture, Ag Tractors, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Compactors/Rollers, Compressors, Construction, Cranes, Dredgers, Forestry, General Industrial, Hydraulic Power Units, Irrigation Equipment, Material Handling, Mining, Mobile Earthmoving Equipment, Paving Equipment, Pumps, Shovels/Draglines, Surface Hauling Equipment and Trenchers. This information about Emissions describes the particular rating’s emissions technology. For more information about emissions certification, please contact your local Cat dealer.

General

Engine Configuration
In-Line 6, 4-Stroke-Cycle Diesel
Cooling System Capacity
26.9 L (28.4 qt)
Lube System (refill)
40-74 L (42-78 qt)
Bore
5.7in
Stroke
7.2in
Displacement
1104.5in³
Aspiration
Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
Compression Ratio
16.0:1
Combustion System
Direct Injection
Rotation from Flywheel End
Counterclockwise
Engine Configuration
In-Line 6
Bore
145 mm (5.71 in)
Stroke
183 mm (7.2 in)
Displacement
18.1 L (1104.5 in³)
Cooling System - Capacity
26.9 L (28.4 qt)
Lube System - Refill
40-74 L (42-78 qt)
Aftertreatment
DOC or DOC+DPF+SCR

Engine Dimensions (Approximate. Final dimensions dependent on selected options)

Length
1438 mm (56.6 in)
Width
943-1132 mm (37.1-44.6 in)
Height
1239-1356 mm (48.8-53.4 in)
Weight - Net Dry (Basic Operating Engine Without Optional Attachments)
1580-1717 kg (3583-3785 lb)

Aftertreatment Dimensions (Approximate. Final dimensions dependent on selected options)

Length
1097-1153 mm (43-45.4 in)
Width
762-1112 mm (30-43.8 in)
Height
468-652 mm (18-25.7 in)
Weight
258-272 kg (569-600 lb)
Diameter
330.2-355.6 mm (13-14 in)

PETU Dimensions (Tier 4 Final, Stage IV Only)

Length
854 mm (33.6 in)
Width
287 mm (11.3 in)
Volume Capacity
48.4 L (51.1 qt)
Weight
19.42 kg (42.8 lb)
Height
551 mm (21.7 in)

Power Rating

Minimum Power
575HP
Maximum Power
800HP
Rated Speed
1800-2000
Maximum Torque
2736lb-ft @ 1300 rpm

Emission Standards

Emissions
EU Stage V

Engine Dimensions - Approximate

Length
1438 mm (56.6 in)
Width
943-1132 mm (37.1-44.6 in)
Height
1239-1356 mm (48.8-53.4 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
1542-1717 kg (3400-3785 lb)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
3785lb
Width
44.6in
Height
53.4in
Length
56.6in

Aftertreatment Dimensions - Approximate

Length
1097-1153 mm (43-45.4 in)
Width
762-1112 mm (30-43.8 in)
Height
468-652 mm (18-25.7 in)
Weight
258-272 kg (569-600 lb)
Diameter
330.2-355.6 mm (13-14 in)

PETU Dimensions - Tier 4 Final, Stage IV Only

Height
551 mm (21.7 in)
Length
854 mm (33.6 in)
Volume Capacity
48.4 L (51.1 qt)
Weight
19.42 kg (42.8 lb)
Width
287 mm (11.3 in)

Aftertreatment Dimensions

Width
43.8in
Height
25.7in
Weight
600lb
Diameter
14in
Length
45.4in

PETU Dimensions - Tier 4 Final Only

Height
21.7in
Length
33.6in
Weight
42.8lb
Width
11.3in
Volume Capacity
51.1qt (US)

Standard Equipment:

  • Air Inlet System
    • Turbocharged
    • Air-to-Air Aftercooled
    • Mid-mount turbocharged system with front and rear exhaust configurations (Tier 4 Final, Stage V)
  • Control System
    • Electronic control system
    • Over-foam wiring harness
    • Automatic altitude compensation
    • Power compensated for fuel temperature
    • Remote fan control
    • Configurable software features
    • Engine monitoring system SAE J1939 broadcast and control
    • Integrated Electronic Control Unit (ECU)
  • Cooling System
    • Thermostats and housing, vertical outlet
    • Centrifugal water pump
    • Guidance on cooling system design available through your dealer to ensure equipment reliability
  • Flywheels And Flywheel Housing
    • Choice of SAE No. 0 or SAE No. 1 flywheel housing
    • 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 V).
  • Fuel System
    • MEUI injection
    • 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 V)
  • 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
  • U.s. Epa Tier 4 Final, Eu Stage V Aftertreatment/ Clean Emissions Control Equipment
    • Aftertreatment information applies to ratings from 429-522 bkW (575-700 bhp)
    • Cat Regeneration System
    • 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