C7.1 High Performance Propulsion Engine

The C7.1 marine propulsion engine is ideal for recreational boating applications, specifically smaller vessels and motoryachts ranging from 25 -60 feet in size. The engine features a common rail fuel system enabling optimum combustion and low emissions. The engines provide noticeably quiet operation due to reduced combustion noise through advanced electronic control. Additionally, no visible smoke is emitted from the C7.1 engines during operation.

Units: US Metric
Power Range
400 bhp - 500 bhp (298 bkW - 373 bkW)
Engine Specifications
Speed Range
2900 rpm
Rotation from Flywheel End
4.13 in
105 mm
5.31 in
135 mm
Turbocharged, aftercooled
427.16 in³
7.01 l
In-line 6, 4-Stroke-Cycle Diesel
IMO II, U.S. EPA Tier 3, RCD II, China II
Dimensions & Weights
Width - Engine
31.4 in
798 mm
34.5 in
876 mm
Engine Dry Weight - Approximate
1653 lb
750 kg
Length - Engine
54.9 in
1394 mm
Standard Equipment
Payment Calculator

Payments calculated using this tool are estimates only and do not include applicable taxes, insurance, and other fees. Actual prices, interest rate, and payments may be different. Financing payment calculations are based on APR and term. Actual payment and terms are subject to approved credit with Cat Financial Services Corporation or other funding sources. Not all customers will qualify.