JAC Sunray 2.8 HFC4DA1-B04 4DA1-B04 Engine

The JAC 2.8L HFC4DA1-B04 engine (frequently abbreviated as 4DA1-B04 in aftermarket catalogs) is a highly durable and proven inline-4 turbo-diesel engine engineered by JAC Motors for heavy-duty commercial performance and exceptional fuel efficiency. Developed upon the legendary and indestructible Isuzu 4JB1 architectural foundation, this robust powertrain features a reliable Overhead Valve (OHV) 8-valve configuration modernized with a premium High-Pressure Common Rail Direct Injection (CRDi) system. This advanced setup ensures massive low-end torque delivery, improved cold-start capabilities, and significantly reduced emissions under heavy payloads. With a displacement of 2,771 cc, it produces approximately 109 to 120 hp and up to 280 Nm of torque. This engine is highly compatible with JAC's core commercial lineup, prominently featured in the JAC Sunray commercial vans and minibuses, as well as various light-duty trucks, providing dependable and efficient performance for urban logistics, passenger transport, and regional freight hauling. Designed to meet stringent commercial emission standards, the 4DA1-B04 engine offers outstanding longevity, extremely low maintenance costs, and a highly accessible global parts ecosystem, making it the ultimate choice for practical fleet operators. Its heavy-duty cast-iron block construction and mature engineering reinforce JAC's reputation for producing world-class, industrial-grade diesel powertrains suitable for the harshest transport conditions.

Technical Features:

• Type: Inline-4 Turbo-Diesel Engine (Isuzu 4JB1 derived architecture)

• Power Output: Approximately 109 hp to 120 hp (80 kW - 88 kW)

• Torque: Up to 250 Nm - 280 Nm

Engine Parameters:

• Displacement: 2,771 cc

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

• Configuration: OHV, 8 Valves, Turbocharged Intercooled

Suitable Models:

• JAC Sunray (Commercial Vans / Minibuses)

• JAC Shuailing / Junling / Kangling (Light Duty Commercial Trucks)

• JAC T6 / T8 (Commercial Pickups - compatible 2.8L applications)