Volvo Penta D4-175 Marine Engine

The Volvo Penta D4-175 Marine Engine from Volvo Penta is a powerful and efficient 4-cylinder marine diesel engine engineered to deliver outstanding performance, fuel economy, and reliability for recreational and light commercial vessels. Designed using advanced automotive-based diesel technology adapted for marine applications, the D4-175 provides smooth acceleration, strong torque output, and dependable operation across a wide range of boating conditions.

Powered by a 3.7-liter inline 4-cylinder turbocharged and supercharged diesel configuration, the engine produces approximately 175 horsepower, offering impressive low-RPM torque and rapid throttle response for enhanced maneuverability and cruising efficiency. The advanced common-rail fuel injection system ensures precise fuel delivery, optimized combustion, reduced emissions, and quieter operation compared to traditional marine diesel engines. The combination of turbocharging and supercharging improves acceleration performance while maintaining excellent fuel efficiency throughout the RPM range.

The engine features a closed freshwater cooling system with heat exchanger, protecting internal components from corrosion and ensuring consistent operating temperatures in both freshwater and saltwater environments. Its lightweight yet robust construction contributes to an excellent power-to-weight ratio, improving vessel handling and performance while maintaining long-term durability. Low vibration levels and reduced noise enhance onboard comfort for passengers and crew during extended operation.

Designed for flexible installation, the D4-175 integrates seamlessly with Volvo Penta sterndrives, inboard shaft systems, and advanced electronic vessel control systems. The engine supports modern helm interfaces, electronic shift and throttle controls, and comprehensive engine diagnostics for improved operator confidence and maintenance efficiency. Service points are easily accessible, simplifying routine maintenance and reducing downtime.

With its combination of advanced engineering, strong torque characteristics, fuel efficiency, and proven durability, the Volvo Penta D4-175 Marine Engine is an excellent propulsion solution for sport cruisers, patrol boats, workboats, and performance-oriented recreational vessels requiring reliable mid-range diesel power.