D4-300
High-performance D4 for demanding sport boat and motor yacht applications.
Specifications
Rated Output
300 HP (220.7 kW)
Displacement
3.7L
Cylinders
4 cylinders
Bore x Stroke
99 mm x 120 mm
Compression Ratio
17.5:1
Dimensions (L x W x H)
940 x 680 x 740 mm
Fuel Consumption
58 L/hr @ full load
Fuel System
Common rail direct injection
Cooling
Fresh water cooling with heat exchanger
Transmission
DPI Aquamatic or HS80IVE inboard reverse gear
Specifications are indicative and may vary by configuration, drive option and model year. Contact us to confirm exact figures for your application against the latest Volvo Penta datasheet.
Key Features
Typical Applications
Why Choose the D4-300?
The D4-300 is a high-output 3.7L 4-cylinder marine engine, well suited to performance motor yachts, sport boats.
Proven Reliability
Swedish engineering heritage with a proven track record across thousands of marine installations worldwide. Volvo Penta engines are renowned for their durability, with many owners logging tens of thousands of hours without major overhaul.
Expert Local Service
Mariner Engineering provides factory-trained servicing from our Spotswood workshop. As an authorised Volvo Penta dealer, we carry genuine parts in stock and offer scheduled maintenance programs and warranty servicing for boat owners across Melbourne and beyond.
Fuel Efficiency
Advanced common rail fuel injection technology delivers optimum power while minimising fuel consumption. Lower fuel costs mean more time on the water, and reduced emissions demonstrate your commitment to protecting the marine environment.
The D4-300 represents the pinnacle of Volvo Penta marine engineering. With a heritage stretching back over a century, Volvo Penta has continuously refined their marine powertrains to deliver the perfect balance of performance, efficiency, and reliability. The D4-300 features 3.7L displacement across 4 cylinders, producing 300 HP of smooth, responsive power.
Every Volvo Penta engine is designed and manufactured in Sweden with the highest quality standards. The Electronic Vessel Control (EVC) system provides seamless integration between engine, drive, and helm electronics, while advanced diagnostics ensure your engine always performs at its best. Whether you're repowering an existing vessel or specifying engines for a new build, the D4-300 offers a compelling combination of performance and long-term value.
As Melbourne's trusted Volvo Penta dealer, Mariner Engineering can help you select the right engine configuration for your vessel, provide professional installation, commission the engine to factory specifications, and support you with ongoing maintenance throughout the life of your boat. Contact our team to discuss how the D4-300 can transform your boating experience.
Authorised Volvo Penta dealer
Genuine factory products, warranty and back-up — not a grey importer.
Factory-trained technicians
Diagnostics, servicing and commissioning from our Spotswood, Melbourne workshop.
Genuine parts in stock
OEM parts and consumables on the shelf to keep your boat on the water.
Supply, install & support
Repower specialists serving boat owners across Port Phillip Bay and beyond.
Other engines in the D4 Series
View full Volvo Penta rangeEntry-level D4 inboard for displacement motor yachts requiring smooth, efficient power with EVC electronic vessel control.
Versatile D4 inboard with balanced power and efficiency for cruising applications.
D4 Aquamatic with DPH or DPI stern drive for planing and semi-planing hulls.
Popular mid-range D4 available in both inboard and Aquamatic stern drive configurations.
High-output D4 delivering strong performance for sport and cruising motor yachts.
Flagship D4 delivering maximum power from the 4-cylinder platform with DPI stern drive.
Enquire About the D4-300
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Complete Service & Support
Every D4-300 from Mariner Engineering comes with access to our full service workshop in Spotswood, Melbourne. We offer scheduled maintenance, warranty servicing, genuine Volvo Penta parts, repowering, and expert technical support for boat owners across Port Phillip Bay and beyond.