Generations
| Model | Size | Built around | Used market | Enclosed cab |
|---|---|---|---|---|
| Komatsu WA450-1 | 200-300 hp | 1990 | common | 95% |
| Komatsu WA450-1L | 200-300 hp | 1990 | rare | — |
| Komatsu WA450-2 | 200-300 hp | 1994 | common | 97% |
| Komatsu WA450 | 200-300 hp | 1994 | known | 98% |
| Komatsu WA450-3 | 200-300 hp | 1998 | known | 97% |
| Komatsu WA450-3L | 200-300 hp | 1998 | known | 96% |
| Komatsu WA450-3MC | 200-300 hp | 2000 | known | 97% |
| Komatsu WA450-5 | 200-300 hp | 2004 | rare | — |
| Komatsu WA450-5L | 200-300 hp | 2004 | known | 97% |
| Komatsu WA450-6 | 200-300 hp | 2007 | rare | — |