Isuzu 4JB1 Engine with Gearbox

The Isuzu 4JB1 is a mature light-duty diesel engine platform engineered for light trucks, pickups and vans. It delivers reliable low-speed torque, easy maintenance and export-ready durability for fleets upgrading or replacing power assemblies.

Designed around Isuzu classic engine technology, the 4JB1 integrates matched gearbox unit, compact architecture and stable mechanical structure to help operators reduce total cost of ownership while maintaining steady performance under load.

Product Advantages

Stable Power

• Maximum power of 85 kW and peak torque of 245 N·m – reliable overall performance.
• Enhanced low-speed torque for easier climbing and acceleration under load.

Intelligent Economy

• Optimized combustion system matches driving demand and road conditions for balanced fuel consumption.
• Mature mechanical structure enables simple inspection and improved operating efficiency.
• Multiple reliable designs: low-friction cylinder assembly, efficient fuel injection system, stable cooling & lubrication system.

Safe and Reliable

• High-strength cast iron cylinder block and head improve long-term durability.
• Integrated engine & gearbox assembly, fewer connecting parts, reduced wear risk.
• Universal spare parts supply helps lower maintenance cost.

Technical Specifications