QSB3.9 Marine Engine
QSB3.9 is a 3.9L compact marine engine, ideal for small fishing boats, workboats, marine auxiliary power, and small tour vessels, delivering reliable performance in tight spaces, making it the ideal choice for small vessels.
Key Specifications
- Configuration: 4-cylinder in-line, four-stroke
- Displacement: 3.9 liters
- Bore × Stroke: 102 mm × 120 mm
- Aspiration: Turbocharged + water-to-air aftercooled
- Fuel System: High-pressure common rail electronic fuel injection
- Exhaust Type: Wet Exhaust
- Rated Power: 100-200 hp (74–147 kW)
- Rated Speed: 2600–3000 rpm
- Max Torque: 330–520 N·m (at 1350–1600 rpm)
- Cooling Method: Liquid-cooled
- Fuel System: High-Pressure Common Rail (HPCR)
- Applications: Small fishing boats, workboats, marine auxiliary power, small tour vessels
Key Technologies & Advantages
- Compactness & Power
- Compact footprint and light weight, perfect for small vessel engine rooms.
- High-pressure common rail system delivers quick power response and excellent fuel economy.
- Marine Environment Adaptability
- Salt-spray resistant and waterproof sealing design, with anti-corrosion treatment on key components, suitable for marine environments.
- Customizable cooling systems and intake/exhaust layouts are available to adapt to different vessel types.
- Reliability & Maintenance
- Modular design enables easy maintenance and short downtime.
- Multi-scenario Adaptability
- Can be used as main propulsion or auxiliary power, adapting to the diverse needs of small vessels.
OEM configurations, different power ratings, and complete power solutions are available.
Contact us now for price, lead time, and technical support.
Quality Assurance & Compliance
Warehouse Storage
FAQ
A: Our core business covers diesel engine development, production, customized modification, maintenance and testing; explosion-proof engine R&D and manufacturing; Cummins spare parts supply, as well as engine overhaul and testing services.
A: Export-standard wooden box packaging
A:The specific delivery time depends on the items and the quantity of your order. We will confirm it with your detailed order.
A. Please provide us with your engine model, required rated power and speed, and application scenario. We will then recommend the most suitable model based on those information.
A: We offer professional engine customization services and can fully tailor the products to your specific requirements, with a variety of options available for pricing, specifications and configurations. The minimum order quantity (MOQ) for customized engines is 1 unit.
A:Yes, every engine is subjected to rigorous and comprehensive performance tests prior to shipment. We also provide clients with detailed test videos and electronic data.
A: EXW, FOB, CFR, CIF，DDU，DDP.
A: T/T, X Transfer, L/C, MoneyGram, PayPal, Cash etc
A:Yes, the warranty period is 6 months, covering main engine components. Consumable parts and failures caused by improper operation are excluded.
