This comparison evaluates the Komatsu D37 and Caterpillar D4, both classified as Industrial tractors. We analyze horsepower ratings (gross and PTO), operating weight, hydraulic flow capacity, 3-point hitch lift capacity, transmission type, warranty coverage, and typical pricing signals. Both models serve similar use cases, so differences in specific specs may influence your decision based on property size, planned implements, and budget. Specs are compiled from manufacturer literature and dealer listings when available, and we update records as sources are verified.
| Specification | Komatsu D37 | Caterpillar D4 |
|---|---|---|
| Engine & Power | ||
| Gross Horsepower | 89 HP | 98 HP |
| PTO Horsepower | 81.88 HP | 90.16 HP |
| Engine Manufacturer | Komatsu | Caterpillar |
| Cylinders | 4 | 4 |
| Displacement | 3.3 L | 4.4 L |
| Fuel Type | Diesel | Diesel |
| Drivetrain & Transmission | ||
| Transmission Type | HST | Powershift |
| Drive Type | Crawler | Crawler |
| Forward Speeds | Variable Hydrostatic | 3 |
| Reverse Speeds | Variable Hydrostatic | 3 |
| PTO & Hydraulics | ||
The Caterpillar D4 delivers 98 HP compared to 89 HP on the Komatsu D37, providing more power for demanding tasks. It also weighs 21,150 lbs vs 17,850 lbs.
Neither model is primarily a lawn tractor. Both can handle mowing with appropriate mower attachments, but they're designed for broader property maintenance tasks including loader work, tilling, and implement use.
The Caterpillar D4 has a higher 3-point lift capacity (4,900 lbs vs 4,450 lbs), which generally correlates with better front loader capability. Loader compatibility: Yes - Integrated Blade.
| PTO Type |
| Live Independent PTO |
| Live Independent PTO |
| PTO Speed | 1000 | 1000 |
| Hydraulic Flow | 28 GPM | 34 GPM |
| Hydraulic Pressure | 3,770 PSI | 3,770 PSI |
| Remote Valves | 2 | 2 |
| Dimensions & Weight |
| Operating Weight | 17,850 lbs | 21,150 lbs |
| Length | 168.5 in | 180.7 in |
| Width | 95.3 in | 103.9 in |
| Height | 118.1 in | 122.6 in |
| Wheelbase | 93 in | 99 in |
| Ground Clearance | 14.6 in | 15.7 in |
| Hitch / Implements |
| 3-Point Category | Category II | Category II |
| Lift Capacity | 4,450 lbs | 4,900 lbs |
| Loader Compatibility | Yes - Integrated Blade | Yes - Integrated Blade |
| Warranty & Ownership |
| Powertrain Warranty | 3 years | 3 years |
| Bumper-to-Bumper | 1 years | 1 years |
| Pricing Signals | ||
| Typical Price | $200,000 | $220,000 |
| MSRP Min | $185,000 | $205,000 |
| MSRP Max | $215,000 | $235,000 |
Both models offer 3-year powertrain warranties. Warranty terms can vary by dealer and region, so confirm coverage details before purchase.
Before purchasing, verify dealer pricing and availability in your area, confirm current warranty terms, test-drive if possible, and assess which implements or attachments you'll need. Both specs and pricing can vary by region and dealer.