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

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

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

Pricing: Contact for Pricing Why we quote: Cat® machines are often configured to your job (attachments, hydraulics, cab options) and freight/taxes can vary by location. Request a quote to get accurate pricing based on your exact setup—typically within 1–2 business days.

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

Pricing: Contact for Pricing Why we quote: Cat® machines are often configured to your job (attachments, hydraulics, cab options) and freight/taxes can vary by location. Request a quote to get accurate pricing based on your exact setup—typically within 1–2 business days.

Payment Calculator Shop Parts Competitive Comparison

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

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