336 Excavator

  • Specs Summary
  • Minimum Power
    375 bhp (280 bkW)
  • Maximum Power
    465 bhp (347 bkW)
  • Emissions
  • Frequency
    1800-2100 rpm

Cat® 3406C Diesel Engine

For your largest power needs in any environment, Cat® 3406C Industrial Diesel Engines offer the unsurpassed performance and durability your customers need to keep their industrial applications and operations running. They deliver high power output, proven reliability and excellent fuel efficiency. These engines maintain low operating costs to keep your customers profitable for years to come. Industries and applications powered by 3406C engines include: Agriculture, Ag Tractors, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Combines/Harvesters, Compactors/Rollers, Compressors, Construction, Cranes, Crushers, Dredgers, Forestry, General Industrial, Hydraulic Power Units, Irrigation Equipment, Loaders/Forwarders, Material Handling, Mining, Mobile Earthmoving Equipment, Paving Equipment, Pumps, Shovels/Draglines, Specialty Ag Equipment, Surface Hauling Equipment, Trenchers and Underground Mining Equipment.

Power Rating

  • Minimum Power 375 bhp (280 bkW)
  • Maximum Power 465 bhp (347 bkW)
  • Frequency 1800-2100 rpm

Emission Standards

  • Emissions Non-Certified


  • Engine Configuration Inline 6, 4-Stroke-Cycle Diesel
  • Bore 137.2 mm (5.4 in)
  • Stroke 165.1 mm (6.5 in)
  • Displacement 14.64 L (893.39 in³)
  • Aspiration Turbocharged Aftercooled
  • Compression Ratio 14.5:1
  • Rotation (from flywheel end) Counterclockwise
  • Lube System (refill) 34.1 L (36 qt)

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

  • Length 1660 mm (65.35 in)
  • Width 906 mm (35.67 in)
  • Height 1335 mm (52.56 in)
  • Weight, Net Dry (Basic Operating Engine Without Optional Attachments) 1300 kg (2866 lb)

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

PETU Dimensions (Tier 4 Final, Stage IV Only)

Standard Equipment

Air Inlet System

  • Air cleaner. Regular duty, dry, panel type with service indicators, turbocharger, jacket water aftercooled.

Control System

  • Hydra-mechanical governor

Cooling System

  • Thermostats and housing
  • Jacket water pump, centrifugal

Exhaust System

  • Exhaust manifold, dry
  • Exhaust elbow, dry, 152 mm (6 in), 4 bolt flange

Flywheels and Flywheel Housing

  • SAE No. 1 flywheel
  • SAE No. 1 flywheel housing
  • SAE standard rotation

Fuel System

  • Fuel filter, LH
  • Fuel transfer pump
  • Fuel priming pump


  • Instrument panel, LH
  • Engine oil pressure gauge
  • Fuel pressure gauge
  • Water temperature gauge
  • Service meter

Lube System

  • Crankcase breather
  • Oil cooler
  • Lube oil filter
  • Oil filler in valve cover and dipstick, both RH
  • Rear sump oil pan

Mounting System

  • Supports


  • Vibration damper
  • Lifting eyes
  • Paint: Caterpillar yellow, with optional colors available at request

Optional Equipment