6BTAA5.9 Diesel Engine

6BTAA5.9 is a 6-cylinder, 5.9L turbocharged and air-to-air aftercooled diesel engine, designed for heavy-duty applications such as construction machinery, generator sets and marine auxiliary power. It delivers high torque at low RPM, excellent fuel efficiency and long service life.

Key Specifications

• Configuration: 6-cylinder in-line, four-stroke
• Displacement: 5.9 liters
• Bore × Stroke: 102 mm × 120 mm
• Aspiration: Turbocharged + air-to-air aftercooled (AA)
• Fuel System: Mechanical inline fuel injection pump
• Rated Power: 200–330 hp（147–243 kW）
• Rated Speed: 2200–2600 rpm
• Max Torque: 580–870 N·m at 1400–1600 rpm
• Cooling System: Liquid-cooled
• Lubrication System: Pressure lubrication
• Application: Heavy-duty trucks, dump trucks, buses, modified vehicles, special working vehicles

Key Technologies & Advantages

1. Power Performance and Fuel Economy
   • With turbocharging and air-to-air aftercooling system, it provides high intake efficiency and sufficient low-speed torque, ensuring stable power output during heavy-load starting, climbing and long-distance driving.
   • Mature and reliable mechanical inline pump ensures good fuel atomization and sufficient combustion, bringing good economy in long-term use.
   • The speed range matches vehicle driving conditions, with smooth power output suitable for continuous road operation.
2. Structural Strength and Durability
   • One-piece high-strength cast iron block provides solid structure, strong impact resistance and fatigue resistance, supporting long-time and high-intensity transportation work.
   • Equipped with reinforced crankshaft, connecting rods and bearings, the engine runs stably with long service life.
   • Optimized lubrication and cooling systems maintain stable performance under long-time high-load working conditions with low failure rate.
3. Environment and Working Condition Adaptability
   • The engine is designed to adapt to various road conditions and environments, and can run steadily under complex conditions such as high temperature, high altitude and mountainous areas.
   • Good cold-start performance makes it suitable for different climate zones.
   • Compact structure and reasonable layout fit the engine room space of various models, making installation and replacement easy.
4. Maintenance and Service
   • Modular design, simple structure and high parts universality bring convenient maintenance.
   • Easy access to spare parts, low maintenance cost and controllable later operation cost.
   • Mature model with large market occupancy, popular maintenance technology and wide after-sales support.
5. Application Scenarios and Adaptability
   • Specially designed for on-highway vehicles, can be used as main power for heavy-duty trucks, dump trucks, buses and special vehicles.
   • Power, speed and accessories can be adjusted according to different vehicle models, with strong adaptability.
   • Smooth operation and low vibration, balancing transportation efficiency and riding comfort.

Multiple power ratings, emission configurations, and OEM solutions are available.
Contact us now for price, lead time, and technical support.