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Komatsu D21P-8 Crawler

Series: Other models

The photo shows the D41P-5A from the same series. Source: https://www.komatsu.eu/en/product-archive/crawler-dozers/d41

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With the D21P-8, Komatsu offers a model from the Komatsu Crawler Tractor series. The engine delivers 43.7 hp (29.8 kW), has 4 cylinders, with a displacement of 3,048 cm³. The unladen weight is 4,241.1 kg. The tank holds 60.2 litres. The gearbox has 2 forward gears. There are also 2 reverse gears. The cooling system holds 9.8 litres. The oil fill is 6.4 litres. The engine fitted is the 4D94LE-2. The Komatsu Crawler Tractor series covers 265 models. Rated output within it ranges from 35.5 to 4,126.5 hp; the D21P-8 sits at the bottom of that range with 43.7 hp. Its immediate neighbours are the FD45P-1 below it with 40.6 hp and the D21A-8E0 above it with 43.9 hp. 1159 Komatsu models across 39 series are on record. The model is listed under Mining equipment. 14 verified figures from 1 source are on file.

Technical data

Engine

Engine model4D94LE-2correct
Power43.7 hp (29.8 kW)correct
Cylinders4correct
Displacement3,048 cm³correct
Aspirationnaturally aspiratedcorrect
Coolant capacity9.8 lcorrect
Engine oil capacity6.4 lcorrect

Dimensions and weights

Unladen weight4,241.1 kgcorrect

Drivetrain and chassis

Gearbox typeKomatsu HYDROSHIFT transmissioncorrect
Forward gears2correct
Reverse gears2correct

Working data

Fuel tank capacity60.2 lcorrect

Other data

Height2,450.6correct

Where this model stands

Power-to-weight ratio: 7 kW/t (30 kW / 4.2 t)

Stronger than 1% of the mining equipment in the register — out of 945 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the Komatsu D21P-8 have?

The Komatsu D21P-8 delivers 43.7 hp.

How much does the Komatsu D21P-8 weigh?

The unladen weight is 4,241 kg.

What engine does the Komatsu D21P-8 have?

4 cylinders, 3,048 cm³ displacement.

What to check before buying

  • Check the hour meter against the service records — a replaced instrument is the most common gap.
  • Compare the data plate and chassis number with the papers.
  • Check the weights in the papers against the figures here — attachments change them.
  • Load the hydraulics and watch for sag.
  • Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 14 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

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Other models in this series

02ESV36

02ESV56

02ESV60

12CM12

12CM15

12CM27

12HM series

14CM09CC

14CM10

14CM15

14CM15B

14CM15C

Sources: [1]

Dump truck in 3D section

Turn the model, look inside and click an assembly — each one is explained.

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