Volvo Penta AQAD41A Engine

The Volvo Penta AQAD41A is a powerful and durable marine diesel engine engineered for high performance in demanding marine applications. Known for its robustness and reliability, this engine is widely used in sport boats, cruisers, and light commercial vessels where strong acceleration, efficient cruising, and long-term dependability are essential.

Engine Design & Construction

The AQAD41A features a 6-cylinder, inline, 4-stroke diesel configuration with turbocharging and aftercooling, delivering impressive power while maintaining controlled fuel consumption. Built with a heavy-duty cast-iron engine block and precision-machined internal components, the engine is designed to handle continuous operation under high loads.

Its advanced marine adaptation includes corrosion-resistant materials and systems optimized for saltwater environments, ensuring durability and extended service life.

Performance & Power Delivery

Delivering high horsepower and strong torque output, the Volvo Penta AQAD41A provides excellent throttle response and smooth power delivery across the RPM range. The turbocharged design enhances acceleration and maintains consistent performance even under heavy loads, making it ideal for planing hulls and fast cruisers.

The engine’s balanced 6-cylinder layout reduces vibration and noise, improving onboard comfort during high-speed cruising and long-distance operation.

Cooling & Efficiency

Equipped with a freshwater cooling system and heat exchanger, the AQAD41A maintains stable operating temperatures while protecting internal components from corrosion. Efficient combustion and optimized airflow contribute to improved fuel efficiency relative to its power output.

Marine Integration & Versatility

The Volvo Penta AQAD41A is compatible with Volvo Penta marine transmissions and sterndrive systems, making it suitable for both repower projects and new installations. Its versatile configuration supports a wide range of marine propulsion setups.

Maintenance & Reliability

Designed for ease of service, the AQAD41A offers accessible maintenance points and a straightforward mechanical layout. Backed by Volvo Penta’s global service network, the engine benefits from strong parts availability and technical support worldwide.

Ideal Applications

The Volvo Penta AQAD41A Engine is ideal for:

Sport boats and performance cruisers
Offshore and coastal cruising vessels
Light commercial and utility boats
Repower and high-performance marine applications

Key Advantages

Proven Volvo Penta marine diesel reliability
Turbocharged and aftercooled for high power output
Smooth 6-cylinder operation with reduced vibration
Freshwater cooling for enhanced durability
Strong torque and excellent acceleration
Global service and parts support

Technical Specifications

General

Model: Volvo Penta AQAD41A
Engine Type: 4-stroke, water-cooled marine diesel
Fuel System: Direct mechanical fuel injection
Aspiration: Turbocharged & aftercooled
Number of Cylinders: 6 inline

Displacement & Combustion

Displacement: Approx. 3.6 liters
Bore × Stroke: Approx. 96 mm × 83 mm
Combustion System: Direct injection diesel

Performance

Maximum Power Output: Approx. 200 HP @ 3,800 RPM
Rated Speed: Approx. 3,800 RPM
Torque Characteristics: High torque across mid and high RPM ranges
Fuel Consumption: Optimized for power-to-weight efficiency (varies by load and drive setup)

Cooling & Lubrication

Cooling System: Freshwater cooling with heat exchanger
Lubrication System: Forced lubrication with oil cooler
Engine Oil Capacity: Approx. 9.0 liters
Recommended Oil Type: Marine-grade diesel engine oil

Electrical System

Starting System: 12 V electric start
Alternator: 12 V marine alternator

Dimensions & Weight

Overall Dimensions (L × W × H): Approx. 980 × 670 × 780 mm
Dry Weight: Approx. 520–550 kg (engine only, excluding drive system)

Drive & Installation

Rotation (Crankshaft): Counter-clockwise (viewed from flywheel end)
Drive Type: Sterndrive or inboard (Volvo Penta compatible)
Compatible Drives: Volvo Penta AQ series sterndrives
Mounting: Heavy-duty marine engine mounts

Service & Adjustment

Valve Clearance (Cold): Intake: 0.30 mm / Exhaust: 0.35 mm
Firing Order: 1 – 5 – 3 – 6 – 2 – 4
Maintenance Access: Designed for easy access to filters, belts, and service points

Volvo Penta AQAD41A

Volvo Penta AQAD41A Engine Sale