Komatsu bulldozers are among the most widely used dozers on construction and mining sites worldwide, and for good reason. They’re durable, parts are readily available, and they hold their value well. But figuring out the actual Komatsu bulldozer price across different models isn’t always straightforward. Prices shift based on model size, year, operating hours, and whether you’re buying new or 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. Knowing where prices sit right now helps you avoid overpaying, or passing on a solid deal. At Japan Machinery Trader, we source used Komatsu bulldozers directly from Japanese rental fleets and auctions, where machines typically see controlled operating conditions and lower working hours than equipment from most other markets.

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.

Best-fit jobs and typical specs

The D20 and D21 handle finish grading, small site clearing, and utility work on confined sites well. They typically weigh between 2,000 and 3,500 kg and run a blade width in the 1.8 to 2.2 meter range, with a net engine output around 35 to 53 HP depending on variant.

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

New price range for D20 and D21

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 the market where you’re purchasing.

Used price range for D20 and D21 from Japan

Japanese-sourced D20 and D21 machines typically sell in the $5,000 to $18,000 USD range. Units with under 3,000 operating hours and solid undercarriage condition sit toward the upper end of that bracket.

Rental-sourced D20 and D21 units from Japan often carry significantly fewer hours than equivalents from other markets, which directly improves long-term reliability.

What changes the price most in this class

Undercarriage wear moves the 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.

What to inspect before you buy

Before committing, focus your inspection on these key areas:

• Track links, rollers, and sprockets for wear depth
• Final drives for oil leaks or unusual noise
• Blade lift cylinders for smooth, consistent movement
• 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 you noticeably more pushing power without jumping to the operating costs of a full-size dozer. These models suit contractors who need versatile performance across multiple job types on sites that a D20 can’t handle efficiently.

Best-fit jobs and typical specs

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 the variant.

New price range for D31 and D37

New units from authorized Komatsu dealers typically land between $90,000 and $140,000 USD, depending on blade configuration and regional dealer pricing.

Used price range for D31 and D37 from Japan

Japanese-sourced D31 and D37 machines generally sell in the $12,000 to $35,000 USD range. Units with under 4,000 operating hours and solid undercarriage condition sit at the top of that bracket.

When comparing the komatsu bulldozer price in this class, rental-fleet machines from Japan consistently deliver better hour-to-condition ratios than open-market alternatives.

What changes the price most in this class

Undercarriage condition and total operating hours drive price the most here. Track replacement costs scale up from the compact class, so factor that into your budget if wear is visible on the rollers or sprockets.

What to inspect before you buy

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
• 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.

Best-fit jobs and typical specs

At this size class, the D51 handles road building, land clearing, and general earthmoving on medium-to-large sites well. Operating weight runs from 11,000 to 13,500 kg with engine output from 110 to 130 HP depending on variant and configuration.

New price range for the D51

New D51 units from authorized Komatsu dealers typically price between $180,000 and $250,000 USD, depending on blade configuration and regional dealer pricing.

Used price range for the D51 from Japan

Japanese-sourced D51 machines generally sell in the $25,000 to $65,000 USD range. When comparing the komatsu bulldozer price in this class, rental-fleet machines from Japan consistently show better condition per operating hour than open-market alternatives.

Units with under 5,000 hours and solid undercarriage sit toward the top of that used price bracket.

What changes the price most in this class

Undercarriage condition and total operating hours create the most price variation here. Track replacement becomes a significant cost at this weight class, so factor potential wear into your total budget before committing.

What to inspect before you buy

Run through these checks before you buy. Pay particular attention to undercarriage wear and hydraulic performance, as both directly affect your operating costs after purchase.

• Undercarriage: rollers, idlers, track links, and sprocket wear
• Final drives for oil leaks or heat damage
• Blade and push arms for cracks or weld repairs
• Hydraulic system for smooth, consistent movement

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.

Best-fit jobs and typical specs

The D61 handles large-scale grading, road construction, and heavy land clearing efficiently. Operating weight runs from 14,000 to 18,000 kg, with engine output between 140 and 168 HP depending on the variant and configuration you select.

New price range for the D61

New D61 units from authorized Komatsu dealers typically price between $280,000 and $380,000 USD, depending on blade configuration and regional dealer pricing.

Used price range for the D61 from Japan

Japanese-sourced D61 machines generally sell in the $45,000 to $120,000 USD range. The komatsu bulldozer price in this class reflects strong global demand, so rental-fleet machines with documented service history consistently command a premium over open-market units.

Machines sourced from Japanese rental companies in this size class regularly carry fewer hours and better condition than comparable used equipment from other markets.

What changes the price most in this class

Undercarriage condition and total operating hours create the largest price gaps here. Track replacement at this weight class carries significant cost, so factor potential wear into your total acquisition budget before committing.

What to inspect before you buy

Before purchasing a D61, run through these critical checks carefully.

• 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
• 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 sit at the top tier of the Komatsu lineup and suit operations where raw pushing force and large blade capacity are non-negotiable.

Best-fit jobs and typical specs

These dozers 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 price range for D65 to D155

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.

Used price range for D65 to D155 from Japan

Japanese-sourced units in this class typically sell between $80,000 and $400,000 USD. The komatsu bulldozer price at this level reflects 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.

What changes the price most in this class

Undercarriage condition and total operating hours create the largest price gaps here. Ripper attachment and blade configuration also add measurable value to individual units.

What to inspect before you buy

Pay close attention to wear across all major systems before committing to a purchase at this price level.

• 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
• Hydraulic system for smooth, consistent operation

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 komatsu bulldozer 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.

Japan Machinery Trader sources used Komatsu bulldozers directly from Japanese rental fleets and auctions, with professional inspection reports included. If you’re ready to compare available units and pricing, browse used Komatsu bulldozers at Japan Machinery Trader.