Cat C7.1 Marine Propulsion Engine IMO II


Cat C7.1 Marine Propulsion Engine IMO II

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Dimensions & Weights
Length 43.1 in
Height 35.1 in
Minimum Width 31.4 in
Maximum Width 33.5 in
Minimum Engine Dry Weight 1609 lb
Maximum Engine Dry Weight 1676 lb
Power Rating
Minimum Rating 280 BHP
Maximum Rating 425 BHP
Engine Specifications
Bore 4.13 in
Stroke 5.31 in
Displacement 428 in³


Reliability & Durability

Reliability & Durability
Superior response time and acceleration; 12V or 24V electrical system; Gear driven jacket water pump and sea water pump for superior reliability; Maintenance free valve train with hydraulic valve lash adjusters

Easy to use

Easy to use
Compatible with Cat® displays and electronics; Self priming fuel system ensures a smooth start every time

Environment friendly

Environment friendly
No visible smoke; Common rail fuel system enables optimum combustion and low emissions; Reduced combustion noise through advanced electronic control; Closed crankcase ventilation system improves engine room cleanliness



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