Volvo Penta AD31b Turbocharged Marine Diesel Engine

Product Description

The Volvo Penta AD31B is a robust, 4-cylinder, 4-stroke, turbocharged & aftercooled marine diesel engine producing around 130 horsepower (96 kW) at approximately 3800-3900 RPM, featuring direct injection, freshwater cooling, and available with Duoprop or SX drive, known for reliability but requiring attention to fuel systems and turbo soot for optimal performance, typical in planning boats.

Key Specifications :

• Engine Type : 4-stroke, 4-cylinder, inline, turbocharged & aftercooled diesel.
• Power Output : ~130 hp (96 kW) at 3800-3900 RPM (can vary slightly by specific variant/rating).
• Displacement : (Not specified in snippets, but typically around 3.0L for the 31 series).
• Fuel System : Direct injection.
• Cooling : Thermostatically regulated freshwater cooling with a heat exchanger and seawater pump.
• Electrical : 12V system, 14V/60A alternator.
• Oil : ~9 liters of VDS3/VDS 4.5 oil (check manual for exact).
• Drive Options : Aquamatic Duoprop (DP) or SX (single prop).