Isuzu Full Series Engine Models for All Construction Machinery
Isuzu offers a full range of turbocharged diesel engines, including mainstream models such as 4LE2, 4JG1, 4HK1, 6HK1, 6UZ1, and 6WG1. Isuzu engines feature ultra-low fuel consumption, strong low-end torque output, stable operation, and long service life, enabling them to adapt to various complex and heavy-duty construction conditions. They are widely used in construction machinery such as excavators, loaders, road rollers, and graders.
1. Excavator Isuzu Engine Series（1–45Ton）
Mini & Small Excavator (1–8 Ton)
4LE2 – Compact low-fuel diesel engine for 1–6 ton mini excavators
4JB1 / 4JB1-T – 2.8L classic durable engine for small excavators
4JG1 – 3.0L universal engine for 6–8 ton small construction machinery
Medium Excavator (12–25 Ton)
4HK1 – 5.2L mainstream high-torque engine for 20-ton excavators (most popular)
4JJ1 – 3.0L high-efficiency medium-duty turbo engine
4JJ3 – Latest upgraded 3.0L low-emission engine for modern medium excavators
RZ4E / RZ4F (MaxForce) – 1.9T/2.2T new energy-saving environmentally friendly engines
Medium & Large Excavator (30–40 Ton)
6HK1 / AH-6HK1XYSS – 7.8L high-power heavy-duty engine for 30–40 ton excavators
4JZ1 – 3.0L high-pressure turbo engine for heavy medium excavators
Large & Mining Excavator (45Ton+)
6UZ1 / AH-6UZ1XYSS – 9.8L heavy-duty mining engine for 45ton+ large excavators
2. Wheel Loader Isuzu Engine Series（1–10Ton）
4JG1 – 3.0L engine for 1–3 ton small wheel loaders
4HK1 – 5.2L high-torque fuel-saving engine for 3–5 ton medium loaders
6HK1 – 7.8L heavy-load engine for 6–8 ton large wheel loaders
6WG1 – 15.7L super large displacement engine for 10ton+ mining heavy loaders
3. Road Roller Isuzu Engine Series
4LE2 – Low vibration engine for 2–6 ton small road rollers
4JG1 – Stable power engine for 6–10 ton medium rollers
4HK1 – High-torque engine for 10–14 ton full hydraulic road rollers
6HK1 – Heavy-duty engine for 16–26 ton large compaction rollers
4. Motor Grader Isuzu Engine Series
6HK1 – Standard matching engine for 160/180/200hp motor graders
6UZ1 – High-power engine for 220hp+ heavy-duty motor graders
5. Bulldozer Isuzu Engine Series
4HK1 – Engine for small & medium bulldozers (SD13/SD16)
6HK1 – Main power for medium and large bulldozers (SD22)
6WG1 – Super high-power engine for large mining bulldozers
6. Air Compressor & Pump Machinery
4LE2 – Small portable air compressor dedicated engine
4JB1 – Universal engine for mobile water pumps & air compressors
4JG1 – Industrial-grade stable engine for large flow pump equipment
7. Crane & Aerial Work Machinery
4HK1 – Engine for truck-mounted cranes & aerial work platforms
6HK1 – Heavy-duty engine for large mobile cranes