Komatsu 4D84 Engine for Excavators

Komatsu 4D84 Engine for Excavators

The Komatsu 4D84 engine stands as a testament to Komatsu’s legacy of engineering excellence in the construction and industrial machinery sector. This four-cylinder diesel engine has earned a reputation for exceptional reliability, fuel efficiency, and robust performance in demanding work environments worldwide.

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The Komatsu 4D84 engine stands as a testament to Komatsu’s legacy of engineering excellence in the construction and industrial machinery sector. This four-cylinder diesel engine has earned a reputation for exceptional reliability, fuel efficiency, and robust performance in demanding work environments worldwide.

Designed with a focus on durability and low operating costs, the 4D84 series delivers consistent power output while maintaining compliance with global emissions standards. Its compact dimensions make it an ideal choice for a wide range of equipment where space is at a premium, without compromising on performance capabilities.

Komatsu’s advanced engineering ensures that the 4D84 engine offers superior torque characteristics across various operating ranges, making it highly versatile for different applications. With a strong emphasis on serviceability, this engine features easily accessible components that simplify maintenance procedures, reducing downtime and operational costs for equipment owners. Whether powering small construction machinery or industrial equipment, the Komatsu 4D84 continues to be a preferred choice for professionals seeking a balance of power, efficiency, and longevity.

Komatsu 4D84 Engine Technical Specifications

Product Images

Komatsu 4D84 Engine Front View

Front View
Robust design with integrated front accessories
Komatsu 4D84 Engine Side View

Side View
4-cylinder configuration with direct injection
Komatsu 4D84 Engine Top View

Top View
Valve mechanism and air intake system

Model:
4D84
Type:
Vertical 4-Cylinder Diesel Engine
Application:
Material Handling & Construction
Dry Weight:
340 kg

Core Parameters

Power Output
36.5-40.4 kW @2200 rpm
Cylinder Configuration
4-cylinder inline, 4-stroke
Displacement
2.54 liters
Cooling System
Forced water circulation

Technical Features

  • Direct fuel injection system for improved combustion efficiency and fuel economy
  • High-strength cylinder block with reinforced structure for extended service life
  • Integrated pressure lubrication system with full-flow oil filtration
  • Compliant with EPA Tier 2 and EU Stage II emissions regulations
  • Low noise operation with advanced combustion control technology

Typical Applications

3-5 ton forklift trucks

Small wheel loaders

Compact hydraulic excavators

Industrial pumps and generators

Agricultural machinery

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