Commercial Propulsion Engines

Cat 3406C

The mechanically governed 3406C marine propulsion engine is available “A” rating of 365 bhp (272 bkW) and a “B” rating of 400 bhp (298 bkW).

Power Rating

Power Range

365-400 bhp (272-298 bkW)

Engine Specifications

Speed Range	1800 rpm
Emissions	Non-Certified
Aspiration	TA
Bore	137.2 mm
Stroke	165.1 mm
Displacement	14.6 l
Rotation from Flywheel End	Clockwise
Configuration	In-line 6, 4-Stroke-Cycle Diesel
Refill Capacity	34.0 L (9.0 gal)
Governor	Mechanical
Oil Change Interval	250 hrs
Cooling	Heat exchanger or keel-cooled

Dimensions & Weights

Download (PDF)

Key features & benefits

Corrosion resistant aftercooler core and regular duty panel type air cleaner at turbocharger inlet
Gear-driven centrifugal jacket water pump with expansion tank
Water-cooled exhaust manifold and turbocharger with round flanged outlet
Fuel priming pump, transfer pump, and LH serviced filter, flexible lines, and fuel ratio control
Heavy duty SAE standard rotation tachometer
LH instrument panel with engine oil pressure, water temperature, and fuel pressure gauges, service meter
Crankcase breather with right hand Service - oil filter, oil level gauge, and oil filler
Front & rear supports
Vibration damper and guard