Volvo Penta D4-320I-G Pair – 640 HP Total Power | JB Marine GmbH Germany

Experience exceptional performance, precision, and fuel efficiency with the Volvo Penta D4-320I-G Pair – a twin-engine configuration delivering a combined 640 HP (2 x 320 HP) for unmatched marine propulsion.
Offered by JB Marine GmbH, your authorized Volvo Penta dealer in Germany, this inboard marine diesel engine set represents the ultimate in reliability, smooth operation, and advanced electronic control.

Engineered for Power, Efficiency & Endurance

The Volvo Penta D4-320I-G is a 4-cylinder, 3.7-liter marine diesel engine designed for maximum performance with minimal fuel consumption.
Its common-rail direct injection system, turbocharger with charge-air cooling, and Electronic Vessel Control (EVC) make it a powerhouse for both leisure and commercial applications.

Performance Highlights

• 320 HP (each engine) at 3600 rpm

• High torque at low RPM for rapid acceleration and superior handling

• Turbocharged with intercooling for sustained top-end power

• Electronic Vessel Control (EVC) for precision operation and diagnostics

• Compact design for flexible installation and balance

Whether you’re powering a fast cruiser, sport yacht, or commercial workboat, the D4-320I-G delivers consistent, responsive performance with low operating costs.

Robust & Marine-Grade Durability

Volvo Penta builds every D4 engine for longevity under the toughest conditions.
With a heavy-duty cast-iron cylinder block and reinforced cylinder head, the D4-320I-G ensures exceptional structural integrity and long service life.

Durability Benefits

• High-strength components for maximum reliability

• Corrosion-resistant marine-grade construction

• Dual oil-filter system for extended oil life

• Crankcase oil separator to maintain a cleaner operation

This twin-engine set is engineered to perform year after year, even under continuous, high-load operation.

Compact, Efficient & Versatile Design

The D4-320I-G combines high output with a compact footprint, making it ideal for installations where space and weight are critical.
Its balanced, low-vibration operation ensures smoother cruising, reduced fatigue, and greater comfort onboard.

Design Advantages

• Lightweight yet powerful configuration

• Simplified repower installation

• Compact size ideal for twin-engine setups

• Balanced operation minimizes vibration and noise

Each engine’s design contributes to overall vessel efficiency, agility, and maneuverability.

Advanced Electronic Vessel Control (EVC)

Volvo Penta’s EVC system provides a fully integrated digital control solution that synchronizes engine, drive, and onboard electronics for ultimate precision and safety.

EVC Capabilities

• Joystick Docking: Effortless maneuvering in tight marinas

• Glass Cockpit Display: Real-time engine data and diagnostics

• Cruise Control & Single-Lever Mode: Smooth throttle response and optimized fuel usage

• e-Key Access: Secure, convenient digital engine activation

JB Marine GmbH’s technicians are factory-trained to install and calibrate all EVC systems for peak performance.

Exceptional Fuel Economy & Low Emissions

The D4-320I-G is built to deliver maximum power with minimal fuel burn.
Its advanced common-rail fuel injection system and electronic engine management continuously optimize fuel delivery and combustion efficiency.

Eco-Efficiency Features

• Reduced fuel consumption across all speeds

• Lower emissions meet global standards

• ECU-monitored performance optimization

• Compliant with EU RCD Stage II, IMO NOx Tier II, BSO II, EPA Tier 3, and China II regulations

This makes it one of the most efficient and environmentally responsible 4-cylinder marine diesels on the market.

Extended Service Intervals & Easy Maintenance

The D4-320I-G propulsion system is designed for simplified serviceability, minimizing downtime and total cost of ownership.

Maintenance Advantages

• Dual oil-filter system: Full-flow and bypass filters for cleaner operation

• Accessible service points: Simplifies routine checks

• Oil sensors & crankcase separators: Prevent buildup and extend oil life

• Genuine Volvo Penta parts: Ensure peak reliability and warranty compliance

With JB Marine GmbH’s certified service team, your engines receive professional care throughout their lifecycle.

Volvo Penta D4-320I-G Technical Specifications

Combined Output (Pair): 640 HP Total

Warranty & After-Sales Support

Each Volvo Penta D4-320I-G Pair purchased from JB Marine GmbH is backed by a 3-year manufacturer’s warranty covering:

• Manufacturing and material defects

• Performance-related issues

• Authorized Volvo Penta service support

Extended warranty options are available for up to 5 years of total coverage.
All service and warranty claims are managed by JB Marine GmbH’s authorized Volvo Penta network.

Frequently Asked Questions (FAQs)

What types of boats suit the D4-320I-G engines?

These engines are ideal for powerboats, sport cruisers, commercial vessels, and performance yachts, where strong acceleration and fuel economy are essential.

How do these compare to 6-cylinder Volvo Penta engines?

The D4-320I-G delivers exceptional performance in a more compact, lightweight configuration.
For larger vessels requiring more horsepower, Volvo Penta’s D6 series provides additional torque and capacity.

How much does a D4-320I-G twin-engine set cost?

Pricing depends on configuration and installation requirements.
Contact JB Marine GmbH for a personalized quotation and the latest Volvo Penta engine offers.

Do you supply genuine Volvo Penta parts?

Yes — we stock a full range of OEM Volvo Penta filters, injectors, turbo components, alternators, and cooling accessories for all D4 models.

Do you ship internationally?

Absolutely. JB Marine GmbH provides fast, insured global delivery across Europe and worldwide.

Why Choose JB Marine GmbH?

• Authorized Volvo Penta Dealer in Germany

• Full engine sales, installation, and commissioning

• Certified Volvo Penta service technicians

• Competitive pricing and OEM warranties

• Fast worldwide delivery with export documentation

JB Marine GmbH combines marine engineering expertise with personalized service, ensuring your investment delivers performance and reliability for years to come.

Upgrade Your Vessel with the Volvo Penta D4-320I-G Pair

Power your vessel with 640 HP of synchronized precision and efficiency.
The Volvo Penta D4-320I-G twin-engine set delivers performance, control, and confidence for every voyage.