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. Sometimes the full serial number is absolutely essential information also (modification is inside the prefix).
| ID | Model | Description |
| 1808764 | CAT 345 series Excavators | |
| 1808765 | 2NW | Caterpillar 345B EXCAVATOR 2NW |
| 1808766 | 2ZW | Caterpillar 345B EXCAVATOR 2ZW |
| 1808767 | 6MW | Caterpillar 345B EXCAVATOR 6MW |
| 1808768 | 6XS | Caterpillar 345B EXCAVATOR 6XS |
| 1808769 | 8KW | Caterpillar 345B EXCAVATOR 8KW |
| 1808770 | AMD | Caterpillar 345B EXCAVATOR AMD |
| 1808771 | AMJ | Caterpillar 345B EXCAVATOR AMJ |
| 1808772 | AMN | Caterpillar 345B EXCAVATOR AMN |
| 1808773 | AYR | Caterpillar 345B EXCAVATOR AYR |
| 1808774 | BFG | Caterpillar 345B EXCAVATOR BFG |
| 1808775 | CFM | Caterpillar 345B EXCAVATOR CFM |
| 1808776 | AGS | Caterpillar 345B II EXCAVATOR AGS |
| 1808777 | AKJ | Caterpillar 345B II EXCAVATOR AKJ |
| 1808778 | AKX | Caterpillar 345B II EXCAVATOR AKX |
| 1808779 | ALB | Caterpillar 345B II EXCAVATOR ALB |
| 1808780 | ALD | Caterpillar 345B II EXCAVATOR ALD |
| 1808781 | ALL | Caterpillar 345B II EXCAVATOR ALL |
| 1808782 | CCC | Caterpillar 345B II EXCAVATOR CCC |
| 1808783 | CDJ | Caterpillar 345B II EXCAVATOR CDJ |
| 1808784 | DCW | Caterpillar 345B II EXCAVATOR DCW |
| 1808785 | DET | Caterpillar 345B II EXCAVATOR DET |
| 1808786 | FEE | Caterpillar 345B II EXCAVATOR FEE |
| 1808787 | APB | Caterpillar 345B II MH EXCAVATOR APB |
| 1808788 | 2SW | Caterpillar 345B L EXCAVATOR 2SW |
| 1808789 | 3MW | Caterpillar 345B L EXCAVATOR 3MW |
| 1808790 | 4SS | Caterpillar 345B L EXCAVATOR 4SS |
| 1808791 | 5WS | Caterpillar 345B L EXCAVATOR 5WS |
| 1808792 | 7KS | Caterpillar 345B L EXCAVATOR 7KS |
| 1808793 | 8RW | Caterpillar 345B L EXCAVATOR 8RW |
| 1808794 | 9CW | Caterpillar 345B L EXCAVATOR 9CW |
| 1808795 | 9GS | Caterpillar 345B L EXCAVATOR 9GS |
| 1808796 | BWY | Caterpillar 345C EXCAVATOR BWY |
| 1808797 | DHP | Caterpillar 345C EXCAVATOR DHP |
| 1808798 | ELS | Caterpillar 345C EXCAVATOR ELS |
| 1808799 | ESD | Caterpillar 345C EXCAVATOR ESD |
| 1808800 | GBH | Caterpillar 345C EXCAVATOR GBH |
| 1808801 | GCL | Caterpillar 345C EXCAVATOR GCL |
| 1808802 | JAR | Caterpillar 345C EXCAVATOR JAR |
| 1808803 | MDC | Caterpillar 345C EXCAVATOR MDC |
| 1808804 | MTE | Caterpillar 345C EXCAVATOR MTE |
| 1808805 | PJW | Caterpillar 345C EXCAVATOR PJW |
| 1808806 | RFN | Caterpillar 345C EXCAVATOR RFN |
| 1808807 | TAJ | Caterpillar 345C EXCAVATOR TAJ |
| 1808808 | TBA | Caterpillar 345C EXCAVATOR TBA |
| 1808809 | TDG | Caterpillar 345C EXCAVATOR TDG |
| 1808810 | WDE | Caterpillar 345C EXCAVATOR WDE |
| 1808811 | FPC | Caterpillar 345C L EXCAVATOR FPC |
| 1808812 | GPH | Caterpillar 345C L EXCAVATOR GPH |
| 1808813 | L5B | Caterpillar 345C L EXCAVATOR L5B |
| 1808814 | L5L | Caterpillar 345C L EXCAVATOR L5L |
| 1808815 | LYS | Caterpillar 345C L EXCAVATOR LYS |
| 1808816 | S5M | Caterpillar 345C L EXCAVATOR S5M |
| 1808817 | SCN | Caterpillar 345C L EXCAVATOR SCN |
| 1808818 | SPC | Caterpillar 345C L EXCAVATOR SPC |
| 1808819 | D3S | Caterpillar 345C MH EXCAVATOR D3S |
| 1808820 | M2R | Caterpillar 345C MH EXCAVATOR M2R |
| 1808821 | BYW | Caterpillar 345D EXCAVATOR BYW |
| 1808822 | FES | Caterpillar 345D EXCAVATOR FES |
| 1808823 | L5R | Caterpillar 345D EXCAVATOR L5R |
| 1808824 | NEG | Caterpillar 345D EXCAVATOR NEG |
| 1808825 | BYC | Caterpillar 345D L EXCAVATOR BYC |
| 1808826 | DPA | Caterpillar 345D L EXCAVATOR DPA |
| 1808827 | EEH | Caterpillar 345D L EXCAVATOR EEH |
| 1808828 | HLC | Caterpillar 345D L EXCAVATOR HLC |
| 1808829 | JKN | Caterpillar 345D L EXCAVATOR JKN |
| 1808830 | KFH | Caterpillar 345D L EXCAVATOR KFH |
| 1808831 | MLK | Caterpillar 345D L EXCAVATOR MLK |
| 1808832 | PBT | Caterpillar 345D L EXCAVATOR PBT |
| 1808833 | RAE | Caterpillar 345D L EXCAVATOR RAE |
| 1808834 | RAJ | Caterpillar 345D L EXCAVATOR RAJ |
| 1808835 | RGD | Caterpillar 345D L EXCAVATOR RGD |
| 1808836 | RGG | Caterpillar 345D L EXCAVATOR RGG |
| 1808837 | YEE | Caterpillar 345D L EXCAVATOR YEE |
| 1808838 | LKY | Caterpillar 345D L VG EXCAVATOR LKY |
| 1808839 | NLM | Caterpillar 345D L VG EXCAVATOR NLM |
| 1808840 | CAT 349 series Excavators | |
| 1808841 | GKF | Caterpillar 349D EXCAVATOR GKF |
| 1808842 | MEN | Caterpillar 349D EXCAVATOR MEN |
| 1808843 | FLA | Caterpillar 349D L EXCAVATOR FLA |
| 1808844 | JGB | Caterpillar 349D L EXCAVATOR JGB |
| 1808845 | KHS | Caterpillar 349D L EXCAVATOR KHS |
| 1808846 | KLH | Caterpillar 349D L EXCAVATOR KLH |
| 1808847 | NNF | Caterpillar 349D L EXCAVATOR NNF |
| 1808848 | PZG | Caterpillar 349D L EXCAVATOR PZG |
| 1808849 | RBJ | Caterpillar 349D L EXCAVATOR RBJ |
| 1808850 | WTD | Caterpillar 349D L EXCAVATOR WTD |
| 1808851 | GAX | Caterpillar 349D2 EXCAVATOR GAX |
| 1808852 | PFD | Caterpillar 349D2 EXCAVATOR PFD |
| 1808853 | RAN | Caterpillar 349D2 EXCAVATOR RAN |
| 1808854 | YAG | Caterpillar 349D2 EXCAVATOR YAG |
| 1808855 | CE4 | Caterpillar 349D2 L EXCAVATOR CE4 |
| 1808856 | SDM | Caterpillar 349D2 L EXCAVATOR SDM |
| 1808857 | TAH | Caterpillar 349D2 L EXCAVATOR TAH |
| 1808858 | XAC | Caterpillar 349D2 L EXCAVATOR XAC |
| 1808859 | YAE | Caterpillar 349D2 L EXCAVATOR YAE |
| 1808860 | ZAE | Caterpillar 349D2 L EXCAVATOR ZAE |
| 1808861 | FJB | Caterpillar 349E EXCAVATOR FJB |
| 1808862 | RGH | Caterpillar 349E EXCAVATOR RGH |
| 1808863 | ETC | Caterpillar 349E L EXCAVATOR ETC |
| 1808864 | MPZ | Caterpillar 349E L EXCAVATOR MPZ |
| 1808865 | MZW | Caterpillar 349E L EXCAVATOR MZW |
| 1808866 | SPG | Caterpillar 349E L EXCAVATOR SPG |
| 1808867 | TFG | Caterpillar 349E L EXCAVATOR TFG |
| 1808868 | WHZ | Caterpillar 349E L EXCAVATOR WHZ |
| 1808869 | DGE | Caterpillar 349E L VG EXCAVATOR DGE |
| 1808870 | FEJ | Caterpillar 349E L VG EXCAVATOR FEJ |
| 1808871 | KCN | Caterpillar 349E L VG EXCAVATOR KCN |
| 1808872 | KFX | Caterpillar 349E L VG EXCAVATOR KFX |
| 1808873 | FKF | Caterpillar 349E MH EXCAVATOR FKF |
| 1808874 | BZ2 | Caterpillar 349F L EXCAVATOR BZ2 |
| 1808875 | HPD | Caterpillar 349F L EXCAVATOR HPD |
| 1808876 | KEA | Caterpillar 349F L EXCAVATOR KEA |
| 1808877 | RAX | Caterpillar 349F LXE EXCAVATOR RAX |
| 1808878 | SFG | Caterpillar 349F LXE EXCAVATOR SFG |
| 1808879 | CAT 350 series Excavators | |
| 1808880 | 2ZL | Caterpillar 350 EXCAVATOR 2ZL |
| 1808881 | 3ML | Caterpillar 350 EXCAVATOR 3ML |
| 1808882 | 7RK | Caterpillar 350 EXCAVATOR 7RK |
| 1808883 | 8HK | Caterpillar 350 EXCAVATOR 8HK |
| 1808884 | 8KZ | Caterpillar 350 L EXCAVATOR 8KZ |
| 1808885 | 9DK | Caterpillar 350 L EXCAVATOR 9DK |
| 1808886 | 9FL | Caterpillar 350 L EXCAVATOR 9FL |
| 1808887 | CAT 352 series Excavators | |
| 1808888 | MDR | Caterpillar 352F EXCAVATOR MDR |
| 1808889 | NDC | Caterpillar 352F EXCAVATOR NDC |
| 1808890 | XAL | Caterpillar 352F EXCAVATOR XAL |
| 1808891 | SD2 | Caterpillar 352F XE VG EXCAVATOR SD2 |
| 1808892 | XAJ | Caterpillar 352F XE VG EXCAVATOR XAJ |
| 1808893 | A9J | Caterpillar 352F-VG EXCAVATOR A9J |
| 1808894 | KBP | Caterpillar 352F-VG EXCAVATOR KBP |
| 1808895 | YEG | Caterpillar 352F-VG EXCAVATOR YEG |
| 1808896 | CAT 365 series Excavators | |
| 1808897 | 9PZ | Caterpillar 365B EXCAVATOR 9PZ |
| 1808898 | 9TZ | Caterpillar 365B EXCAVATOR 9TZ |
| 1808899 | BTH | Caterpillar 365B EXCAVATOR BTH |
| 1808900 | CFJ | Caterpillar 365B EXCAVATOR CFJ |
| 1808901 | CTY | Caterpillar 365B EXCAVATOR CTY |
| 1808902 | PEG | Caterpillar 365B EXCAVATOR PEG |
| 1808903 | SDL | Caterpillar 365B EXCAVATOR SDL |
| 1808904 | DER | Caterpillar 365B II EXCAVATOR DER |
| 1808905 | JMB | Caterpillar 365B II EXCAVATOR JMB |
| 1808906 | 4XZ | Caterpillar 365B L EXCAVATOR 4XZ |
| 1808907 | 9TZ | Caterpillar 365B L EXCAVATOR 9TZ |
| 1808908 | AGD | Caterpillar 365B L EXCAVATOR AGD |
| 1808909 | ELC | Caterpillar 365C EXCAVATOR ELC |
| 1808910 | FEN | Caterpillar 365C EXCAVATOR FEN |
| 1808911 | MCS | Caterpillar 365C EXCAVATOR MCS |
| 1808912 | MEM | Caterpillar 365C EXCAVATOR MEM |
| 1808913 | PAR | Caterpillar 365C EXCAVATOR PAR |
| 1808914 | MCY | Caterpillar 365C L EXCAVATOR MCY |
| 1808915 | GWC | Caterpillar 365C L MH EXCAVATOR GWC |
| 1808916 | CAT 374 series Excavators | |
| 1808917 | PAP | Caterpillar 374D L EXCAVATOR PAP |
| 1808918 | PAS | Caterpillar 374D L EXCAVATOR PAS |
| 1808919 | PAX | Caterpillar 374D L EXCAVATOR PAX |
| 1808920 | PJA | Caterpillar 374D L EXCAVATOR PJA |
| 1808921 | EBF | Caterpillar 374F EXCAVATOR EBF |
| 1808922 | AP4 | Caterpillar 374F L EXCAVATOR AP4 |
| 1808923 | AT2 | Caterpillar 374F L EXCAVATOR AT2 |
| 1808924 | DNM | Caterpillar 374F L EXCAVATOR DNM |
| 1808925 | MFL | Caterpillar 374F L EXCAVATOR MFL |
| 1808926 | NFJ | Caterpillar 374F L EXCAVATOR NFJ |
| 1808927 | CAT 375 series Excavators | |
| 1808928 | 6NK | Caterpillar 375 EXCAVATOR 6NK |
| 1808929 | 6RL | Caterpillar 375 EXCAVATOR 6RL |
| 1808930 | 8WJ | Caterpillar 375 EXCAVATOR 8WJ |
| 1808931 | 8XG | Caterpillar 375 EXCAVATOR 8XG |
| 1808932 | 1JM | Caterpillar 375 L EXCAVATOR 1JM |
| 1808933 | 9WL | Caterpillar 375 L EXCAVATOR 9WL |
| 1808934 | CAT 385 series Excavators | |
| 1808935 | ANS | Caterpillar 385B EXCAVATOR ANS |
| 1808936 | BKF | Caterpillar 385B EXCAVATOR BKF |
| 1808937 | BKX | Caterpillar 385B EXCAVATOR BKX |
| 1808938 | BLY | Caterpillar 385B EXCAVATOR BLY |
| 1808939 | CLS | Caterpillar 385B EXCAVATOR CLS |
| 1808940 | FDL | Caterpillar 385B EXCAVATOR FDL |
| 1808941 | MYA | Caterpillar 385B EXCAVATOR MYA |
| 1808942 | RCD | Caterpillar 385B EXCAVATOR RCD |
| 1808943 | JCM | Caterpillar 385C EXCAVATOR JCM |
| 1808944 | KBC | Caterpillar 385C EXCAVATOR KBC |
| 1808945 | KKK | Caterpillar 385C EXCAVATOR KKK |
| 1808946 | MNZ | Caterpillar 385C EXCAVATOR MNZ |
| 1808947 | EAM | Caterpillar 385C FS EXCAVATOR EAM |
| 1808948 | T2F | Caterpillar 385C FS EXCAVATOR T2F |
| 1808949 | EDA | Caterpillar 385C L EXCAVATOR EDA |
| 1808950 | KGB | Caterpillar 385C L EXCAVATOR KGB |
| 1808951 | SBE | Caterpillar 385C L EXCAVATOR SBE |
| 1808952 | T2E | Caterpillar 385C L EXCAVATOR T2E |
| 1808953 | WAW | Caterpillar 385C L MH EXCAVATOR WAW |
| 1808954 | CAT 390 series Excavators | |
| 1808955 | BYP | Caterpillar 390D EXCAVATOR BYP |
| 1808956 | KCZ | Caterpillar 390D EXCAVATOR KCZ |
| 1808957 | WAG | Caterpillar 390D L EXCAVATOR WAG |
| 1808958 | WAP | Caterpillar 390D L EXCAVATOR WAP |
| 1808959 | WBT | Caterpillar 390D L EXCAVATOR WBT |
| 1808960 | FEH | Caterpillar 390F EXCAVATOR FEH |
| 1808961 | GAY | Caterpillar 390F L EXCAVATOR GAY |
| 1808962 | HJD | Caterpillar 390F L EXCAVATOR HJD |
| 1808963 | HSM | Caterpillar 390F L EXCAVATOR HSM |
| 1808964 | MGF | Caterpillar 390F L EXCAVATOR MGF |
| 1808965 | TYE | Caterpillar 390F L EXCAVATOR TYE |
| 1808966 | N64 | Caterpillar 390F L OEM EXCAVATOR N64 |
| 1808967 | P4J | Caterpillar 390F L OEM EXCAVATOR P4J |
| 1808968 | CAT 538 series Excavators | |
| 1808969 | GMY | Caterpillar 538 EXCAVATOR GMY |
| 1808970 | HBS | Caterpillar 538 EXCAVATOR HBS |
| 1808971 | JEY | Caterpillar 538 EXCAVATOR JEY |
| 1808972 | KBJ | Caterpillar 538 EXCAVATOR KBJ |
| 1808973 | CAT 558 series Excavators | |
| 1808974 | F5L | Caterpillar 558 EXCAVATOR F5L |
| 1808975 | LRT | Caterpillar 558 EXCAVATOR LRT |
| 1808976 | CAT 568 series Excavators | |
| 1808977 | YJX | Caterpillar 568 FM EXCAVATOR YJX |
| 1808978 | BRB | Caterpillar 568 FM LL EXCAVATOR BRB |