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 |
| 1808550 | Caterpillar 325 series Excavators | |
| 1808551 | 5WK | CAT 325 EXCAVATOR 5WK |
| 1808552 | 6RM | CAT 325 EXCAVATOR 6RM |
| 1808553 | 7TG | CAT 325 EXCAVATOR 7TG |
| 1808554 | 8JG | CAT 325 EXCAVATOR 8JG |
| 1808555 | 8NL | CAT 325 EXCAVATOR 8NL |
| 1808556 | 8YK | CAT 325 EXCAVATOR 8YK |
| 1808557 | 9SG | CAT 325 EXCAVATOR 9SG |
| 1808558 | 9ZK | CAT 325 EXCAVATOR 9ZK |
| 1808559 | 2JK | CAT 325 L EXCAVATOR 2JK |
| 1808560 | 2SL | CAT 325 L EXCAVATOR 2SL |
| 1808561 | 6KK | CAT 325 L EXCAVATOR 6KK |
| 1808562 | 7CJ | CAT 325 L EXCAVATOR 7CJ |
| 1808563 | 7LJ | CAT 325 L EXCAVATOR 7LJ |
| 1808564 | 7LM | CAT 325 L EXCAVATOR 7LM |
| 1808565 | 8NK | CAT 325 L EXCAVATOR 8NK |
| 1808566 | 9KL | CAT 325 L EXCAVATOR 9KL |
| 1808567 | 2SK | CAT 325 LN EXCAVATOR 2SK |
| 1808568 | 3LL | CAT 325 LN EXCAVATOR 3LL |
| 1808569 | 8GM | CAT 325B EXCAVATOR 8GM |
| 1808570 | 8PR | CAT 325B EXCAVATOR 8PR |
| 1808571 | ABD | CAT 325B EXCAVATOR ABD |
| 1808572 | 1GS | CAT 325B L EXCAVATOR 1GS |
| 1808573 | 1HS | CAT 325B L EXCAVATOR 1HS |
| 1808574 | 2JR | CAT 325B L EXCAVATOR 2JR |
| 1808575 | 4DS | CAT 325B L EXCAVATOR 4DS |
| 1808576 | 5BS | CAT 325B L EXCAVATOR 5BS |
| 1808577 | 5LW | CAT 325B L EXCAVATOR 5LW |
| 1808578 | 6DN | CAT 325B L EXCAVATOR 6DN |
| 1808579 | 7EN | CAT 325B L EXCAVATOR 7EN |
| 1808580 | 8RR | CAT 325B L EXCAVATOR 8RR |
| 1808581 | 8FN | CAT 325B LN EXCAVATOR 8FN |
| 1808582 | AMH | CAT 325C EXCAVATOR AMH |
| 1808583 | BFE | CAT 325C EXCAVATOR BFE |
| 1808584 | BKH | CAT 325C EXCAVATOR BKH |
| 1808585 | BKT | CAT 325C EXCAVATOR BKT |
| 1808586 | BKW | CAT 325C EXCAVATOR BKW |
| 1808587 | BLA | CAT 325C EXCAVATOR BLA |
| 1808588 | BLX | CAT 325C EXCAVATOR BLX |
| 1808589 | CRB | CAT 325C EXCAVATOR CRB |
| 1808590 | CSJ | CAT 325C EXCAVATOR CSJ |
| 1808591 | DTF | CAT 325C EXCAVATOR DTF |
| 1808592 | G1L | CAT 325C EXCAVATOR G1L |
| 1808593 | JLC | CAT 325C EXCAVATOR JLC |
| 1808594 | JLD | CAT 325C EXCAVATOR JLD |
| 1808595 | M2K | CAT 325C EXCAVATOR M2K |
| 1808596 | S2C | CAT 325C EXCAVATOR S2C |
| 1808597 | S3M | CAT 325C EXCAVATOR S3M |
| 1808598 | Y4P | CAT 325C EXCAVATOR Y4P |
| 1808599 | BMM | CAT 325C L EXCAVATOR BMM |
| 1808600 | BTD | CAT 325C L EXCAVATOR BTD |
| 1808601 | C4H | CAT 325D EXCAVATOR C4H |
| 1808602 | C7K | CAT 325D EXCAVATOR C7K |
| 1808603 | C8L | CAT 325D EXCAVATOR C8L |
| 1808604 | CJM | CAT 325D EXCAVATOR CJM |
| 1808605 | DAP | CAT 325D EXCAVATOR DAP |
| 1808606 | DBH | CAT 325D EXCAVATOR DBH |
| 1808607 | GPB | CAT 325D EXCAVATOR GPB |
| 1808608 | KDG | CAT 325D EXCAVATOR KDG |
| 1808609 | PKE | CAT 325D EXCAVATOR PKE |
| 1808610 | RJK | CAT 325D EXCAVATOR RJK |
| 1808611 | C9M | CAT 325D FM LL EXCAVATOR C9M |
| 1808612 | A3R | CAT 325D L EXCAVATOR A3R |
| 1808613 | AZP | CAT 325D L EXCAVATOR AZP |
| 1808614 | ERK | CAT 325D L EXCAVATOR ERK |
| 1808615 | GBR | CAT 325D L EXCAVATOR GBR |
| 1808616 | JCL | CAT 325D L EXCAVATOR JCL |
| 1808617 | KBE | CAT 325D L EXCAVATOR KBE |
| 1808618 | LAL | CAT 325D L EXCAVATOR LAL |
| 1808619 | MCL | CAT 325D L EXCAVATOR MCL |
| 1808620 | NAC | CAT 325D L EXCAVATOR NAC |
| 1808621 | PAL | CAT 325D L EXCAVATOR PAL |
| 1808622 | PEH | CAT 325D L EXCAVATOR PEH |
| 1808623 | SCR | CAT 325D L EXCAVATOR SCR |
| 1808624 | T2S | CAT 325D L EXCAVATOR T2S |
| 1808625 | Caterpillar 328 series Excavators | |
| 1808626 | BYH | CAT 328D LCR EXCAVATOR BYH |
| 1808627 | GTN | CAT 328D LCR EXCAVATOR GTN |
| 1808628 | MKR | CAT 328D LCR EXCAVATOR MKR |
| 1808629 | RMX | CAT 328D LCR EXCAVATOR RMX |
| 1808630 | SWF | CAT 328D LCR EXCAVATOR SWF |
| 1808631 | Caterpillar 329 series Excavators | |
| 1808632 | BYS | CAT 329D EXCAVATOR BYS |
| 1808633 | DTZ | CAT 329D EXCAVATOR DTZ |
| 1808634 | WDK | CAT 329D EXCAVATOR WDK |
| 1808635 | BFC | CAT 329D L EXCAVATOR BFC |
| 1808636 | CZF | CAT 329D L EXCAVATOR CZF |
| 1808637 | DJF | CAT 329D L EXCAVATOR DJF |
| 1808638 | J8D | CAT 329D L EXCAVATOR J8D |
| 1808639 | JHJ | CAT 329D L EXCAVATOR JHJ |
| 1808640 | L5G | CAT 329D L EXCAVATOR L5G |
| 1808641 | L5H | CAT 329D L EXCAVATOR L5H |
| 1808642 | LFW | CAT 329D L EXCAVATOR LFW |
| 1808643 | LGN | CAT 329D L EXCAVATOR LGN |
| 1808644 | MNB | CAT 329D L EXCAVATOR MNB |
| 1808645 | RSK | CAT 329D L EXCAVATOR RSK |
| 1808646 | TAY | CAT 329D L EXCAVATOR TAY |
| 1808647 | TPM | CAT 329D L EXCAVATOR TPM |
| 1808648 | WLT | CAT 329D L EXCAVATOR WLT |
| 1808649 | XDB | CAT 329D L EXCAVATOR XDB |
| 1808650 | YFW | CAT 329D L EXCAVATOR YFW |
| 1808651 | EBM | CAT 329D LN EXCAVATOR EBM |
| 1808652 | SCY | CAT 329D LN EXCAVATOR SCY |
| 1808653 | PLW | CAT 329E L EXCAVATOR PLW |
| 1808654 | TST | CAT 329E L EXCAVATOR TST |
| 1808655 | RLD | CAT 329E LN EXCAVATOR RLD |