Don't forget about time difference!
Very important remark: The CAT equipment prefix (first three figures and numbers in serial number) is absolutely necessary information for correct engine identification. But your additional information (full serial number, arrangement number, where the engine is installed etc.) will help to avoid mistakes and save our and your time. Sometimes the full serial number is absolutely essential information also (modification is inside the prefix).
| ID | Model | Description |
| 1815010 | CATERPILLAR PIPELAYER | |
| 1815011 | 39C | CAT MD6 PIPELAYER |
| 1815012 | WGS | CAT PL61 PIPELAYER |
| 1815013 | 62A | CAT 561B PIPELAYER |
| 1815014 | 92J | CAT 561C PIPELAYER |
| 1815015 | 54X | CAT 561D PIPELAYER |
| 1815016 | 6NL | CAT 561H PIPELAYER |
| 1815017 | 1KW | CAT 561M PIPELAYER |
| 1815018 | CPH | CAT 561N PIPELAYER |
| 1815019 | TAD | CAT 561N PIPELAYER |
| 1815020 | 95N | CAT 571F PIPELAYER |
| 1815021 | 16W | CAT 571G PIPELAYER |
| 1815022 | 5ZD | CAT 571G PIPELAYER |
| 1815023 | 96N | CAT 572F PIPELAYER |
| 1815024 | 40U | CAT 572G PIPELAYER |
| 1815025 | 8PC | CAT 572G PIPELAYER |
| 1815026 | 2HZ | CAT 572R PIPELAYER |
| 1815027 | AAC | CAT 572R PIPELAYER |
| 1815028 | DSC | CAT 572R II PIPELAYER |
| 1815029 | 8HB | CAT 578 PIPELAYER |
| 1815030 | 38A | CAT 583H PIPELAYER |
| 1815031 | 78V | CAT 583K PIPELAYER |
| 1815032 | 2XS | CAT 583R PIPELAYER |
| 1815033 | CMX | CAT 583T PIPELAYER |
| 1815034 | BXL | CAT 587R PIPELAYER |
| 1815035 | FAT | CAT 587T PIPELAYER |
| 1815036 | 31Z | CAT 589 PIPELAYER |
| 1815037 | 62H | CAT 594 PIPELAYER |
| 1815038 | 96V | CAT 594H PIPELAYER |