C7.1 Marine Propulsion Engine (U.S. EPA Tier 3 / IMO II)

Power Range	280 bhp - 425 bhp (209 bkW - 317 bkW)

Aspiration	Turbocharged-aftercooled
Bore	4.13in
Configuration	In-line 6, 4-stroke-cycle diesel
Cooling	Heat exchange or keel cooled
Displacement	428in³
Emissions	U.S. EPA Tier 3, IMO II, RCD II, China II
Flywheel Housing	SAE No. 03
Governor	Electronic (A5E2 V2 ECM)
Oil Change Interval	500 hrs
Refill Capacity	20 L (5.3 gal)
Rotation	Counterclockwise from the flywheel end
Speed Range	2300 - 2700 rpm
Stroke	5.31in

Dry Weight	1676lb
Height	34.5in
Length	43.1in
Width	31.4in

Standard Equipment:

Marine Classification Society (MCS) Approval
Water-cooled turbocharger and exhaust manifold
Closed crankcase ventilation system
Integral engine oil cooler
Self-tensioning multi-vee alternator drive belt

Common rail fuel system
Starter motors - 12V or 24V
Fuel cooler
Electric fuel priming pump

Corrosion-resistant sea water aftercooler

Vibration damper and guard
Front and rear engine mounting brackets

Gear-driven seawater pump (rubber impeller)
Fin and tube-type jacket water heat exchanger

Optional Equipment:

SOLAS double wall high-pressure fuel lines

Engine-mounted secondary alternator - 24V 55 amp or 12V 100 amp
Analogue gauge displays
Glow plugs
Mechanical throttle converter for repower

Transmission gear oil cooler (engine mounted)
Jacket water heater
Cabin heater (calorifier) connections

Various 5" and 6" water cooled exhaust elbow configurations

Right-hand and high-level left-hand oil dipsticks

What Our Customers Are Saying About Us

Gregory Poole Equipment Company

4.0

Based on 58 reviews

review us on

Tom Corona

21:51 06 May 26

Rich Stidd

22:10 02 May 26

Carlos Virgilio Sauceda Rivera

20:55 23 Mar 26

John Karpathian

16:21 24 Jan 26

Clean store and great employees

Hunter Flaugher

12:56 06 Aug 25

Hydraulic pump shop is unmatched. I made the mistake of going somewhere else before bringing my pump here. These guys were more than helpful and friendly. Went out of their way to help me find a solution for my problem even when it didn’t benefit them. This is how businesses should be run. I won’t go anywhere else.

Brian Hrudka

16:45 12 Feb 25

Too bad Poole Cat Field Service is better at invoicing than actually getting my machines moving.

A prompt and courteous technician arrived, and correctly diagnosed two problems with my mini Ex. Thank you. I corrected those problems, but machine still did not work.

He diagnosed a fuel problem as a clogged filter, rather than a bad fuel pump which I managed to diagnose. I also figured out, via help on the internet, that the fuel shut-off solenoid was bad.

Machine runs fine now. So my advice is to check the internet, before letting Poole charge you $870 for a two hour field visit. And you can find a perfectly fine aftermarket fuel pump for $20 rather than the $250 that Poole charges... and it arrives faster,

Jacey Price

21:04 05 Dec 24

Need to teach a tech how to drive a service truck. Around 2:48 on highway 40 east, the truck pictured (plate ending in 8236) flew across 3 lanes of traffic to meet the Cleveland rd exit. Almost hit a semi and caused me to swerve with my children in the car. Glad making the exit was more important than children’s lives.