ENGINE VOLVO PENTA D4-320 I

The Volvo Penta D4-320 is a diesel engine 3.7-liter and 4-cylinder in-line with a fuel injection system common-rail, camshafts double head and turbo. Provides high reliability, fuel economy is exceptional and reduced maintenance costs.

The ENGINE VOLVO PENTA D4-320 I belongs to Volvo Penta’s advanced D4 marine diesel lineup, developed to deliver powerful propulsion for mid-size boats and high-performance marine vessels.

The engine uses a 3.7-liter inline four-cylinder diesel configuration that produces 320 horsepower, delivering strong torque and responsive acceleration for planing hull vessels.

The D4 series integrates high-pressure common-rail fuel injection, allowing precise fuel delivery and improved combustion efficiency.

This engine also features double overhead camshafts and turbocharging, technologies that help increase airflow and engine efficiency while maintaining reliable marine performance.

Volvo Penta developed the D4 engine series to provide strong diesel performance with reduced fuel consumption and lower emissions for modern marine vessels.

Where This Engine Is Commonly Used

The ENGINE VOLVO PENTA D4-320 I is typically installed in vessels that require high horsepower and reliable diesel propulsion.

Typical applications include:

• Express cruisers

• Offshore fishing boats

• Sport fishing vessels

• Patrol and service vessels

• Charter boats

• Commercial workboats

Because of its strong low-rpm torque, the engine allows boats to reach planing speed quickly and maintain efficient cruising speeds across different operating conditions.

Its compact engine design also allows installation in vessels where engine room space is limited.

Engine Design and Build Quality

The ENGINE VOLVO PENTA D4-320 I is engineered with marine-grade materials designed for durability in demanding marine environments.

Key design features include:

• Inline 4-cylinder turbocharged diesel engine

• 3.7-liter displacement

• High-pressure common-rail fuel injection

• Double overhead camshaft valve system

• Electronic Vessel Control (EVC)

• Freshwater heat-exchanger cooling system

The turbocharged system combined with charge-air cooling allows the engine to deliver strong torque across the entire rpm range.

Volvo Penta designed the engine with robust internal components and optimized engine suspension to reduce vibration and improve onboard comfort.

Why Boat Owners Choose This Engine

Many boat owners select the ENGINE VOLVO PENTA D4-320 I because it provides a combination of high horsepower, reliable diesel performance, and efficient fuel consumption.

One major advantage of this engine is its exceptional marine torque, allowing vessels to accelerate quickly and maintain stable cruising performance.

Another benefit is the engine’s advanced electronic engine control system, which improves throttle response and integrates with modern marine electronics.

Boat operators also appreciate the engine’s fuel efficiency, achieved through electronically controlled common-rail fuel injection.

Volvo Penta’s reputation for marine propulsion engineering further increases confidence in the reliability and service support available for the D4 engine series.

Is This Engine Right for Your Boat?

The ENGINE VOLVO PENTA D4-320 I is best suited for vessels that require high-power diesel propulsion combined with efficient fuel consumption.

This engine is ideal for:

• Offshore sport fishing vessels

• Express cruisers

• Commercial marine operators

• Charter boats

• Boat builders installing inboard diesel propulsion

Because of its high power output and compact design, the D4-320 I is frequently selected for vessels operating in offshore environments where performance and reliability are essential.

Technical Specifications

The ENGINE VOLVO PENTA D4-320 I is designed as a high-performance inboard marine diesel engine.

Key specifications include:

• Engine type: Inline 4-cylinder turbocharged diesel

• Power output: 320 hp (235 kW)

• Rated engine speed: 3600 rpm

• Displacement: 3.7 liters

• Fuel system: High-pressure common-rail injection

• Aspiration: Turbocharged with charge-air cooler

• Cooling system: Freshwater heat-exchanger cooling

• Control system: Electronic Vessel Control (EVC)

• Emissions compliance: EPA Tier 3, EU RCD Stage II, IMO NOx

These specifications allow the engine to deliver powerful propulsion while maintaining efficient fuel consumption and smooth operation.

Availability and Support

Marine engines require reliable maintenance support and service availability. The ENGINE VOLVO PENTA D4-320 I is supported by Volvo Penta’s international dealer network, which provides technical support, maintenance services, and genuine replacement components.

Authorized Volvo Penta service centers worldwide provide diagnostics, maintenance, and installation support for the D4 engine lineup.

Boat owners researching this engine often compare other models in the Volvo Penta D4 series, including the D4-230, D4-270, and D4-300 engines, which offer different horsepower levels depending on vessel size and propulsion requirements.

Frequently Asked Questions

What horsepower does the Volvo Penta D4-320 I produce?

The Volvo Penta D4-320 I produces 320 horsepower (235 kW) at approximately 3600 rpm, making it suitable for high-performance cruisers and offshore fishing vessels.

What type of engine is the Volvo Penta D4-320?

It is a 3.7-liter inline four-cylinder turbocharged marine diesel engine equipped with high-pressure common-rail fuel injection.

What boats commonly use the D4-320 engine?

The engine is commonly installed in express cruisers, sport fishing boats, patrol vessels, and commercial marine craft.

Is the Volvo Penta D4-320 fuel efficient?

Yes. The common-rail fuel injection system helps optimize fuel combustion and reduce overall fuel consumption during cruising.

What is the displacement of the Volvo Penta D4-320 engine?

The engine has a 3.7-liter displacement with a four-cylinder inline diesel configuration.

HIGH PERFORMANCE

Your immediate response and high performance correspond with low levels of noise and vibration, thanks to the balancer shaft and the improvement of the suspension of the motor.

COMPACT AND ROBUST

The engine is designed and manufactured to be immensely robust, using technology and material of the avant-garde. Thanks to this, you get a high reliability and long term durability.

PAIR UNIQUE MARINE

Engines Volvo Penta stand out for their couple unique marine. The high torque at low revolutions per minute provides a rapid acceleration of planning and a great power of maneuver. Even with high load and high rpm, the torque remains strong to provide a cruise speed effective in all conditions.

LOW POWER CONSUMPTION

The system of injection of fuel of high technology, in combination with the advanced streaming and the queue system Aquamatic, help to make the motor to eat very little.

ELECTRONIC CONTROL

The electronic control of the boat or EVC (Electronic Vessel Control Volvo Penta) is formed by the engines, electronics and the unique set of optional features, such as the mode of a lever, the developer of speed, system, Glass Cockpit, etc, The remote e-Key is included as standard equipment.

SERVICES EXTENDED

The propulsion system from Volvo Penta are easy to maintain. Our wide range of oil, lubrication and coolant high quality guarantees maximum performance and more time on the sea. Among the standard features include a oil filter full flow and bypass separated, sensors oil level and oil temperature and oil separator crankcase to keep the engine in good condition.