Generations
| Model | Size | Built around | Used market | Enclosed cab |
|---|---|---|---|---|
| Komatsu D39E-1 | 75-100 hp | 1998 | common | 3% |
| Komatsu D39P | 75-100 hp | 1999 | common | 9% |
| Komatsu D39PX-12 | 75-100 hp | 1999 | rare | — |
| Komatsu D39E | 75-100 hp | 2000 | known | 2% |
| Komatsu D39 | 75-100 hp | 2003 | rare | — |
| Komatsu D39EX | 75-100 hp | 2003 | rare | — |
| Komatsu D39EX-21 | 75-100 hp | 2005 | common | 76% |
| Komatsu D39PX-21 | 75-100 hp | 2005 | common | 70% |
| Komatsu D39PX | 75-100 hp | 2005 | rare | — |
| Komatsu D39PX21KomStatII | 75-100 hp | 2006 | rare | — |
| Komatsu D39PX21KomStat | 75-100 hp | 2007 | rare | — |
| Komatsu D39EX22 | 75-100 hp | 2008 | rare | — |
| Komatsu D39EX21KomStatII | 75-100 hp | 2008 | rare | — |
| Komatsu D39PX22 | 100-150 hp | 2009 | rare | — |