JAC N90 N120 4.0L B4.0NS6B Engine

The JAC 4.0L B4.0NS6B engine is a highly advanced and immensely robust inline-4 turbo-diesel engine engineered by Anhui Cummins Power (the strategic joint venture between JAC Motors and Cummins) for premium medium-duty commercial trucks. Developed upon the world-renowned Cummins B-Series architectural foundation to meet the most stringent National VI b (Euro VI equivalent) emission standards, this modern commercial powertrain features a 16-valve configuration and a premium High-Pressure Common Rail Direct Injection (CRDi) system. Combined with an advanced Turbocharger and highly efficient aftertreatment systems, it ensures massive low-end torque delivery, rapid transient response, and exceptional fuel economy under heavy payloads. With a displacement of 4.0 liters, it produces a highly capable output ranging from approximately 170 to 195 hp, and an impressive 600 to 730 Nm of torque. This engine is highly compatible with JAC's core export commercial lineup, prominently featuring the JAC N90 and N120 medium-duty trucks, providing dependable and highly efficient performance for urban logistics, cold chain transport, and regional freight hauling. Designed to maximize fleet uptime and minimize total cost of ownership, the B4.0NS6B engine offers indestructible cast-iron construction, extended service intervals, and the backing of a globally accessible parts ecosystem. Its cutting-edge engineering reinforces the JAC-Cummins partnership's reputation for producing world-class, industrial-grade diesel powertrains suitable for demanding global transport conditions.

Technical Features:

• Type: Inline-4 Turbo-Diesel Engine (Anhui Cummins B-Series Architecture)

• Power Output: Approximately 170 hp to 195 hp (125 kW - 143 kW)

• Torque: Up to 600 Nm - 730 Nm

Engine Parameters:

• Displacement: 4.0L (approx. 4,000 cc)

• Fuel System: High-Pressure Common Rail Direct Injection (CRDi)

• Configuration: 16 Valves, Turbocharged Intercooled (Optimized for Euro VI / National VI b emissions)

Suitable Models:

• JAC N90 / N120 (Medium-Duty Commercial Trucks / 9-ton to 12-ton GVW)

• JAC Shuailing / Junling (Premium domestic light/medium trucks)

• Compatible JAC commercial vehicles utilizing the Cummins 4.0L platform