High-output D6 for performance applications with inboard and DPI stern drive options.

440 HP (323.6 kW)
5.5L
6 cylinders
103 mm x 110 mm
17.5:1
1131 x 750 x 820 mm
86 L/hr @ full load
Common rail direct injection
Fresh water cooling with heat exchanger
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.
The D6-440 is a flagship high-performance 5.5L 6-cylinder marine engine, well suited to performance motor yachts, sport boats.
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.
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.
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 D6-440 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 D6-440 features 5.5L displacement across 6 cylinders, producing 440 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 D6-440 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 D6-440 can transform your boating experience.
Genuine factory products, warranty and back-up — not a grey importer.
Diagnostics, servicing and commissioning from our Spotswood, Melbourne workshop.
OEM parts and consumables on the shelf to keep your boat on the water.
Repower specialists serving boat owners across Port Phillip Bay and beyond.

Entry-level D6 delivering smooth 6-cylinder power for cruising motor yachts with multiple drive options.

Versatile D6 available across all drive configurations for a wide range of motor yacht applications.

High-performance D6 for sport and cruising motor yachts with demanding power requirements.

Premium D6 with DPH and DPI stern drive options for performance cruisers.

Flagship D6 delivering maximum inline-6 power with water jet option available.
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Every D6-440 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.