Komatsu D355A-3 Crawler Dozer: Specs & Dimensions.

by Adam Krawiec

In the realm of heavy construction and earthmoving, few machines command the respect and admiration as the Komatsu D355A Crawler Dozer. Produced by the renowned Japanese manufacturer Komatsu between 1975 and 1993, the D355A series has been a testament to engineering excellence and reliability. Over nearly two decades, through five incremental versions from D355A-1 to D355A-5, Komatsu introduced subtle improvements and modifications, ensuring each new model surpassed its predecessor in terms of performance and durability.

The D355A-3 version, in particular, represents a pinnacle of this evolutionary process, combining robust power, innovative technology, and unmatched efficiency. Designed to tackle the most challenging construction and earthmoving tasks, the Komatsu D355A-3 is a heavy-duty machine that embodies the strength and dependability that Komatsu is known for worldwide.

In this article, we delve deep into the specifications and dimensions of the Komatsu D355A-3 Crawler Dozer, showcasing why it remains a powerhouse in heavy machinery. From its formidable engine to its expansive dimensions and advanced features, the D355A-3 is built to perform in the toughest conditions, making it a valued asset in any construction or mining operation.

Technical Specifications and Dimensions

In this section, we will explore the intricate details of the D355A-3’s specifications and dimensions. From the sheer horsepower, speed that drives its operations to the precise engineering of its weight distribution and fuel economy.


The Komatsu D355A-3 stands out with its impressive engine power, boasting 410 horsepower (306 kW) at 2000 rpm. This not only provides exceptional pulling power but also allows the dozer to efficiently undertake the most demanding earthmoving and construction tasks. Such power sets the D355A-3 apart from its competition, offering unmatched performance in challenging conditions.


At the heart of the Komatsu D355A-3 is the SA6D155-4A engine, a turbocharged power unit with a displacement of 1175.4 cubic inches (19.27 liters). This engine not only delivers significant power but also optimizes fuel consumption. The six-cylinder design ensures smooth and stable machine operation, which is crucial during long hours of heavy-duty applications.


The movement capabilities of the Komatsu D355A-3 set it apart as a highly efficient crawler dozer. With a maximum speed of 7.9 mph (12.7 kph) both in forward and reverse.


Weighing in at an impressive 105,557.4 pounds (47,841 kg), the Komatsu D355A-3 is among the heaviest and most robust dozers in its class. This substantial weight translates to increased stability and ground pressure, enabling efficient material movement and operation in challenging terrains.

Fuel Consumption

Designed with an advanced turbocharged engine and a fuel tank capacity of 198.2 gallons (750 liters), the Komatsu D355A-3 is engineered for fuel efficiency even under the most demanding conditions. Fuel efficiency is crucial for machine operators looking to reduce operational costs while maintaining high productivity and performance on the construction site.

Applications of the Komatsu D355A-3

The Komatsu D355A-3, a heavyweight in the construction world, excels in various demanding applications due to its robust build, powerful engine, and superior performance. Here are some key applications where the D355A-3 shines:

  • Large-scale earthmoving: The D355A-3’s impressive size, weight, and powerful engine make it ideal for large-scale earthmoving projects. From bulk excavation and site preparation to large-volume trenching, this bulldozer can handle significant amounts of material efficiently.
  • Demanding terrain: The D355A-3’s double grouser tracks provide exceptional traction, allowing it to navigate challenging terrain with ease. This makes it suitable for tasks like slope work, road construction in uneven areas, and even land clearing in harsh environments.
  • Demolition and site preparation: The D355A-3’s robust build and powerful blade make it a valuable asset for demolition projects. It can break down structures, clear debris, and prepare construction sites for further development.
  • Heavy-duty material handling: The D355A-3’s sturdy construction and strong hydraulic system enable it to handle heavy materials with ease. Whether it’s pushing large rock piles, stockpiling materials, or backfilling trenches with dense material, this bulldozer can handle the job.
  • Infrastructure development: The D355A-3 plays a crucial role in developing essential infrastructure. Its capabilities extend to constructing dams, canals, and levees, as well as preparing foundations for bridges and other structures.
  • Mining and Quarrying: While not its primary application, the D355A-3’s strength can be utilized in some mining and quarrying operations for tasks like overburden removal or sorting stockpiled materials.

Additional factors contributing to the D355A-3’s versatility:

  • Optional attachments: The D355A-3 can be equipped with various attachments like rippers, winches, and hammers, further expanding its functionality for specific applications.
  • Operator experience: A skilled operator can leverage the D355A-3’s capabilities to their full potential, maximizing its efficiency and effectiveness in various applications.

In conclusion, the Komatsu D355A-3 caters to a wide range of demanding construction and earthmoving projects. Its robust design, powerful engine, and excellent traction make it a reliable workhorse for tackling challenging tasks and contributing significantly to infrastructure development and large-scale earthmoving endeavors.

Is the Komatsu D575A-3 still in production?

The information about the production status of the Komatsu D575A-3 is a bit unclear. Here’s what we can gather based on available resources:

  • Limited evidence for ongoing production: There’s no definitive confirmation from Komatsu’s official website or press releases regarding the D575A-3’s current production status.
  • Industry discussions: Several construction forums and equipment websites suggest the D575A-3 might have been discontinued around 2008, possibly replaced by newer Komatsu models.
  • Parts availability: While some online stores might list parts for the D575A-3, this doesn’t necessarily confirm ongoing production. Parts for older models can be stocked for a period after discontinuation.

Here’s what you can do to get a clearer picture:

  • Contact Komatsu directly: Reaching out to Komatsu’s sales department or authorized dealers might provide the most reliable information about the production status of the D575A-3.
  • Search for newer models: Explore newer Komatsu bulldozer models that might be successors to the D575A-3. Consider models like the D651 or D65PX-17 for similar capabilities.

Overall, the evidence leans towards the Komatsu D575A-3 likely being discontinued. However, contacting Komatsu directly is the best way to confirm its current production status.

What is the price?

The average price of Komatsu D355A and D575A-3 on the secondary market can vary significantly depending on various factors, but here is a general range to consider:

Komatsu D355A:

  • Good condition: USD 20,000 – USD 40,000
  • Repairable condition: USD 10,000 – USD 20,000

Komatsu D575A-3:

  • Good condition: USD 40,000 – USD 60,000
  • Repairable condition: USD 20,000 – USD 40,000

Please keep in mind that these prices are only estimates and may vary depending on:

  • Year of production: Newer models may be more expensive.
  • Working hours: Machines with fewer working hours will be more expensive.
  • Equipment: Additional attachments can increase the price.
  • Location: Prices may vary depending on the country and region.

Additional costs:

  • Transportation costs
  • Auction fees (if buying at an auction)
  • Repair costs (if buying a machine in poor condition)

It is recommended to thoroughly inspect the machine before purchase, preferably with the help of a mechanic.

Here are some websites where you can find used Komatsu D355A and D575A-3:

You can also contact a Komatsu dealer to check the availability of used machines.

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