Komatsu Bulldozer Price: 5 Model Ranges (New & Used)

A new D65PX doesn't cost the same as a used D31, and the gap between those two numbers can be significant enough to change your entire equipment budget. This article breaks down current price ranges for five popular Komatsu bulldozer models, covering both new and used options so you can compare costs and figure out which machine fits your project and your budget.

1. Komatsu D20 and D21

The D20 and D21 sit at the compact end of the Komatsu dozer lineup, making them the most affordable entry point into the range. These machines suit operators who need a reliable dozer for lighter tasks without the fuel and operating cost of a larger unit. They handle finish grading, small site clearing, and utility work on confined sites well.

• Operating weight: 2,000 to 3,500 kg
• Blade width: 1.8 to 2.2 m
• Engine output: 35 to 53 HP (net)

Komatsu has largely discontinued the D20 and D21 series. Comparable new compact dozers from Komatsu now start around $40,000 to $70,000 USD through authorized dealers, depending on configuration and market. Japanese-sourced D20 and D21 machines typically sell in the $5,000 to $18,000 USD range, with units under 3,000 operating hours and solid undercarriage condition sitting toward the upper end of that bracket.

Undercarriage wear moves the price needle most in this size class since track replacement costs a lot relative to the machine's total value. Hours, blade condition, and availability of service records also separate a fair-priced unit from an overpriced one. Before committing, focus your inspection on track links, rollers, and sprockets for wear depth; final drives for oil leaks or unusual noise; blade lift cylinders for smooth, consistent movement; and the engine for clean oil and no coolant contamination.

2. Komatsu D31 and D37

The D31 and D37 step up from the compact class into mid-range territory, giving noticeably more pushing power without jumping to the operating costs of a full-size dozer. Both models handle road building, land clearing, and agricultural grading well. Operating weight runs between 5,000 and 8,500 kg, blade widths from 2.4 to 2.8 meters, and engine output from 70 to 100 HP depending on variant.

New units from authorized Komatsu dealers typically land between $90,000 and $140,000 USD, depending on blade configuration and regional dealer pricing. Japanese-sourced D31 and D37 machines generally sell in the $12,000 to $35,000 USD range, with units under 4,000 operating hours and solid undercarriage condition sitting at the top of that bracket. Rental-fleet machines from Japan consistently deliver better hour-to-condition ratios than open-market alternatives in this class.

Undercarriage condition and total operating hours drive price the most here, and track replacement costs scale up from the compact class. Run through these checks before you commit: undercarriage components (rollers, idlers, and track tension), transmission and final drives for leaks or rough shifting, blade and push arms for cracks or previous weld repairs, and engine oil condition against visible wear indicators.

3. Komatsu D51

The D51 offers a meaningful step up from the D37 without the operating costs of larger units like the D61. Contractors choose it for versatile earthmoving across road construction, land clearing, and site development work. Operating weight runs from 11,000 to 13,500 kg with engine output from 110 to 130 HP depending on variant and configuration.

New D51 units from authorized Komatsu dealers typically price between $180,000 and $250,000 USD, depending on blade configuration and regional dealer pricing. Japanese-sourced D51 machines generally sell in the $25,000 to $65,000 USD range, with units under 5,000 hours and solid undercarriage sitting toward the top of that bracket. Rental-fleet machines from Japan consistently show better condition per operating hour than open-market alternatives.

Undercarriage condition and total operating hours create the most price variation here, and track replacement becomes a significant cost at this weight class. Pay particular attention to undercarriage wear (rollers, idlers, track links, and sprocket wear), final drives for oil leaks or heat damage, the blade and push arms for cracks or weld repairs, and hydraulic system performance.

4. Komatsu D61

The D61 sits at a sweet spot between mid-range versatility and serious pushing power. Road construction crews, land clearing operations, and infrastructure contractors consistently rank it among the most practical Komatsu dozer options available. The D61 handles large-scale grading, road construction, and heavy land clearing efficiently, with operating weight from 14,000 to 18,000 kg and engine output between 140 and 168 HP.

New D61 units from authorized Komatsu dealers typically price between $280,000 and $380,000 USD. Japanese-sourced D61 machines generally sell in the $45,000 to $120,000 USD range — strong global demand means rental-fleet machines with documented service history consistently command a premium over open-market units in this class.

Undercarriage condition and total operating hours create the largest price gaps here, and track replacement at this weight class carries significant cost. Before purchasing a D61, run through these checks: undercarriage (track links, rollers, idlers, and sprocket wear), final drives for oil leaks or overheating signs, blade and push arms for cracks or weld repairs, and hydraulic cylinders for smooth, consistent movement.

5. Komatsu D65 to D155

The D65 through D155 range covers heavy-duty earthmoving at a scale where smaller dozers simply run out of capacity. These machines handle large-scale mining, quarry work, and major civil infrastructure projects where the D61 lacks sufficient power. Operating weight runs from 18,000 kg (D65) to over 68,000 kg (D155), with engine output spanning 180 to 410 HP depending on the model.

New units in this class carry substantial price tags — expect $350,000 to over $1,200,000 USD from authorized dealers, depending on model, blade configuration, and regional pricing. Japanese-sourced units in this class typically sell between $80,000 and $400,000 USD, reflecting machine size, total hours, and overall condition. Rental-fleet D65 units from Japan consistently show lower operating hours and cleaner maintenance records than open-market equivalents.

Undercarriage condition and total operating hours create the largest price gaps here; ripper attachment and blade configuration also add measurable value to individual units. Pay close attention to undercarriage (track links, rollers, idlers, and sprocket wear), final drives for oil leaks or heat damage, blade and push arms for cracks or weld repairs, and hydraulic system condition before committing to a purchase at this price level.

Final Buying Checklist

Before you finalize any purchase, run through this checklist regardless of which model you're considering. Undercarriage condition and total operating hours are the two factors that consistently separate a fair deal from a costly mistake across every Komatsu dozer size class. Verify that the seller provides a documented service history, and always confirm blade and final drive condition before committing your budget.

Getting the price right means looking beyond the sticker number. Factor in potential undercarriage replacement costs, shipping, and import duties to arrive at your true total acquisition figure. A machine that costs $5,000 less upfront but needs $12,000 in track work isn't a better deal.

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