Cummins QSB6.7 380HP Marine Diesel Engine

Description

Cummins QSB6.7 380HP Marine Diesel Engine for Sale at Coastal Wave Marine

The Cummins QSB6.7 380HP Marine Diesel Engine is a high-output, electronically controlled marine propulsion engine designed for demanding commercial vessels and performance-oriented recreational craft. Supplied brand new by Coastal Wave Marine, this engine is delivered in full marine configuration with genuine standard manufacturer accessories, ensuring long-term durability, regulatory compliance, and installation confidence.

Built on Cummins’ proven 6.7-litre inline six-cylinder platform, the Cummins QSB6.7 marine diesel engine combines Bosch High-Pressure Common Rail (HPCR) fuel injection, advanced turbocharging, and seawater aftercooling to deliver strong torque, rapid acceleration, and optimized fuel efficiency in the 380 horsepower class.

This rating is particularly suited to heavier semi-planing and planing hulls that require reliable mid-to-high range propulsion performance.

Engineered for Demanding Marine Operations

The Cummins QSB6.7 380HP Marine Diesel Engine is widely specified in:

• Offshore commercial workboats

• Fast patrol vessels

• Passenger transport craft

• Windfarm support boats

• Performance motor yachts

• Planing hull applications

The 380HP configuration delivers enhanced torque and higher sustained cruising capability compared to lower horsepower variants in the QSB6.7 family, while maintaining efficient fuel consumption and mechanical reliability.

Key operational advantages include:

• Strong low- and mid-range torque

• Smooth and stable throttle response

• Reduced vibration for improved onboard comfort

• Efficient combustion with low visible smoke

• Compliance with EPA Tier 3 marine emissions standards

Advanced Electronic Engine Management

The Cummins QSB6.7 marine propulsion engine features an integrated electronic control module (ECM) that continuously monitors and adjusts engine parameters for optimal performance.

The system manages:

• Fuel injection timing and delivery

• Engine load and duty cycle

• Temperature and pressure systems

• RPM stability under varying operating conditions

This electronic management enhances engine protection, reduces downtime risk, and supports preventative maintenance planning for commercial and recreational operators alike.

Repower-Optimized Solution

The Cummins QSB6.7 380HP Marine Diesel Engine is a strong repower candidate for replacing:

• Cummins 6BTA 5.9 engines in the 330–370HP range

• Mechanical QSB5.9 configurations

• Comparable 350–400HP inboard diesel engines

Its installation footprint and mounting layout simplify integration into existing engine rooms while delivering increased horsepower and improved efficiency.

Coastal Wave Marine provides technical assistance with:

• Gear ratio matching

• Shaft and driveline compatibility review

• Cooling system selection (heat exchanger or keel cooled)

• Mounting and alignment consultation

• Duty rating selection (M1, M2, M3 classifications)

Standard Manufacturer Accessories Included

Each new Cummins QSB6.7 380HP marine engine supplied by Coastal Wave Marine includes genuine standard manufacturer accessories, ensuring a complete marine propulsion configuration.

Standard components include:

• Marine heat exchanger cooling system

• Seawater aftercooler

• Wet exhaust manifold

• Marine electronic control module (ECM)

• Engine wiring harness

• Primary alternator

• Starter motor

• Front engine mounts with isolators

• SAE flywheel housing

• Factory manuals and documentation

This guarantees delivery of a true marine-rated engine, not an industrial conversion.

Configuration Flexibility

The Cummins QSB6.7 380HP Marine Diesel Engine can be supplied in multiple configurations to suit vessel requirements:

• Engine-only (bobtail configuration)

• With ZF marine gearbox

• With Twin Disc marine transmission

• Complete propulsion package with integrated controls

• Heat exchanger cooled system

• Keel cooled configuration

• Slimline variant for restricted engine room installations

Our team ensures proper matching to hull type, displacement, and operational profile.

Global Logistics and Export Support

Coastal Wave Marine supplies new Cummins marine diesel engines internationally, offering:

• Professional marine crating

• Export documentation and commercial invoicing

• Freight coordination with global carriers

• Delivery to shipyards, ports, and marinas worldwide

We serve commercial operators and private vessel owners across North America, Europe, the Caribbean, the Middle East, Asia-Pacific, and Africa.

Technical Specifications – Cummins QSB6.7 380HP

Why Buy from Coastal Wave Marine

Coastal Wave Marine specializes in supplying brand-new Cummins marine engines with verified configuration and professional technical support.

We provide:

• Genuine new engine sourcing

• Repower planning assistance

• Complete propulsion package configuration

• International logistics coordination

• Clear technical documentation and support

When investing in a Cummins QSB6.7 380HP Marine Diesel Engine, proper specification and reliable supply are essential. Coastal Wave Marine ensures every engine is correctly configured, documented, and prepared for dependable marine operation.