Cat Engine and Generator Serial Number Prefix Identification

Every Caterpillar engine or generator carries a unique serial number, and the prefix on the serial number plate provides key information about the unit’s model, application, and configuration. By understanding the serial number prefix, technicians, operators, and parts personnel can quickly identify the correct engine or generator model, verify arrangement numbers, and ensure proper maintenance or parts ordering.

Cat Engine Serial Number Identification

The prefix often indicates the engine family, emission standard, and intended application, making it an essential tool for accurately tracing the history and specifications of a Cat power unit. This guide explains how to interpret the serial number prefix to reliably identify Caterpillar engines and generators.

Cat Engine and Generator Serial Number Identification

Cat Engine SN Prefix 01T - 5ZA

Prefix Model Prefix Model
01T D3400 Industrial Engine 3LW 3456 Industrial Engine
01Z 3208 Marine Engine 3LZ 3176B Industrial Engine
02B 3304 Industrial Engine 3MS 3512 Generator Set
02B D330C Industrial Engine 3NK G3412 Gas Engine
02Z 3208 Truck Engine 3NL 3176B Industrial Engine
03Z 3208 Industrial Engine 3NS 3516B Generator Set
04B 3304 Industrial Engine 3PC 3204 Industrial Engine
04B D330C Industrial Engine 3PS 3508 Marine Engine
04H D13000 Industrial Engine 3RC G3516 Gas Engine
05B 3304 Marine Engine 3RG 3306B Generator Set
05B D330C Marine Engine 3RJ 3116 Truck Engine
05E D13000 Industrial Engine 3RS 3512 Marine Engine
05V D315 Marine Engine 3SS 3516 Marine Engine
07Y G3304 Gas Engine 3TC 3304 Generator Set
09A D333C Industrial Engine 3TC 3304B Generator Set
10E 3304 Industrial Engine 3TR 3126 Industrial Engine
13E 3304 Marine Engine 3TS 3508 Marine Engine
13E 3304B Marine Engine 3WF SR4 Generator
15B D386 Generator Set 3WR G3408C Industrial Engine
17W 7231 Marine Transmission 3WS 3512 Marine Engine
1AJ 3126B Truck Engine 3XF G3606 Gas Engine
1BM 3306B Industrial Engine 3XS 3516B Marine Engine
1BW 3126 Truck Engine 3YF 3512 Generator Set
1DG 3306B Generator Set 3ZG 3003 Industrial Engine
1DG 3306BH Generator Set 3ZJ 3406B Truck Engine
1DW 3196 Industrial Engine 3ZJ 3406C Truck Engine
1FN 3616 Marine Engine 3ZW 3512B Locomotive Engine
1HZ 3516B Generator Set 40B D326F Marine Engine
1LG 3408B Marine Engine 40J D346 Marine Engine
1LM 3512 Industrial Engine 40S 3208 Truck Engine
1LS 3406C Generator Set 424 3024C Industrial Engine
1LW 3406E Truck Engine 42B D397D Marine Engine
1ML 3056 Industrial Engine 444 C4.4 Industrial Engine
1MM 3406E Truck Engine 44B D375D Marine Engine
1NJ 3116 Generator Set 46B D353C Industrial Engine
1NS 3304B Marine Engine 46B D353D Industrial Engine
1NW 3516B Generator Set 46B D353E Industrial Engine
1PD 3616 Generator Set 47B D353C Marine Engine
1PD 3616 Industrial Engine 47B D353D Marine Engine
1PD 3616 Locomotive Engine 47B D353E Marine Engine
1PD 3616 Marine Engine 49B D342C Industrial Engine
1PS 3304B Marine Engine 49C G399 Gas Engine
1PW 3512B Marine Engine 49Y 3512 Industrial Engine
1RG 3304 Gas Engine 4AW 3512B Generator Set
1RG G3304 Gas Engine 4BM 3406C Generator Set
1RK 3406 Gas Engine 4BW 3516B Marine Engine
1RK G3406 Gas Engine 4BZ 3412C Generator Set
1RS 3306B Marine Engine 4CG G3616 Gas Engine
1SK 3116 Marine Engine 4CK 3406B Truck Engine
1SS 3406C Marine Engine 4CK 3406C Truck Engine
1TS 3408C Marine Engine 4CR 3412E Industrial Engine
1TW 3508B Marine Engine 4DL G3306 Truck Engine
1WF SR4 Generator 4DR 3512 Generator Set
1WM 3126 Truck Engine 4EK G3516 Gas Engine
1WZ CPT372 Pumper 4ES 3126 Truck Engine
1YB 7211 Marine Transmission 4EZ 3126 Marine Engine
1YF 3304B Generator Set 4FD 3406 Gas Engine
1YG G3612 Gas Engine 4FD G3406 Gas Engine
1YN C12 Truck Engine 4GB 7251 Marine Transmission
1ZB 7221 Marine Transmission 4GF 3014 Industrial Engine
1ZD 3608 Marine Engine 4GM 3508B Generator Set
1ZF 3508 Generator Set 4JK 3406B Generator Set
1ZG 3114 Industrial Engine 4JK 3406C Generator Set
1ZJ 3126 Marine Engine 4KC 3512 Gas Engine
20B D364 Marine Engine 4KC G3512 Gas Engine
23B D337 Marine Engine 4KG 3116 Marine Engine
23C 3306 Industrial Engine 4KR 3114 Industrial Engine
23C D333C Industrial Engine 4MD SR4 Generator
23Z 3508 Generator Set 4MG 3406B Truck Engine
24Z 3512 Generator Set 4MJ 3516 Marine Engine
25Z 3516 Generator Set 4PC 3304 Generator Set
27Z 3516 Industrial Engine 4PG 3116 Industrial Engine
28V 3408 Truck Engine 4PM 3406B Generator Set
28V 3408B Truck Engine 4RF 3024 Industrial Engine
28Z 3516 Vehicular Engine 4RG 3406B Generator Set
29A 3208 Generator Set 4RG 3406C Generator Set
29Z 3516 Marine Engine 4TB 3406B Marine Engine
2AF 3512 Industrial Engine 4TN 3512B Marine Engine
2AJ 3306B Generator Set 4TZ SCT673 Pumper
2AM 3406C Generator Set 4WB 3306 Industrial Engine
2AW 3176C Industrial Engine 4WD G3508 Gas Engine
2AZ 3306C Truck Engine 4WF G3608 Gas Engine
2BG 3408B Generator Set 4XB 3304B Industrial Engine
2BK 3116 Truck Engine 4XD 3013 Industrial Engine
2BM 3508B Marine Engine 4XF 3516 Generator Set
2CW 3116 Truck Engine 4ZK 3054 Generator Set
2ED SR4 Generator 4ZR 3406C Generator Set
2EK 3406B Truck Engine 4ZS G3606B Industrial Engine
2EZ 3512B Marine Engine 50B D342C Marine Engine
2FR 3116 Truck Engine 50Y 3512 Marine Engine
2FW 3516B Marine Engine 51Y 3512 Vehicular Engine
2GW 3512B Marine Engine 51Z 3208 Truck Engine
2HG 3208 Generator Set 54B 1676 Truck Engine
2HW 3508B Generator Set 54E 3181 Marine Transmission
2JF G3508 Gas Engine 56K 7155 Heavy-Duty Transmission
2JW 3516B Generator Set 57B D330A Marine Engine
2KK 3304B Generator Set 57K D348 Vehicular Engine
2KS C12 Truck Engine 57V 3160 Generator Set
2LZ SPS342 Pumper 57V 3160 Industrial Engine
2MR 3116 Industrial Engine 57V 3160 Marine Engine
2MW 3618 Marine Engine 57V 1160 Truck Engine
2MZ 3406C Industrial Engine 59B D333A Marine Engine
2PB 7271 Marine Transmission 5AA SR4 Generator
2PN C10 Truck Engine 5AW 3512B Generator Set
2PW 3054 Generator Set 5BA SR4 Generator
2RD 3512B Marine Engine 5CA SR4 Generator
2SG 3116 Generator Set 5CD 3208 Truck Engine
2TB 3204 Industrial Engine 5CK SR4 Generator
2TD 3516B Marine Engine 5DA SR4 Generator
2TJ G3508 Generator Set 5DS 3406E Truck Engine
2TM 3306B Generator Set 5DZ 3176C Industrial Engine
2TS 3516 Generator Set 5EA SR4 Generator
2WB 3406B Generator Set 5EF 3114 Industrial Engine
2WD SR4 Generator 5EK 3406E Truck Engine
2WG 3116 Industrial Engine 5EN 3116 Industrial Engine
2WJ 3412 Generator Set 5FA SR4 Generator
2WK 3512 Locomotive Engine 5FL PM3412 Power Module
2WS 3406E Truck Engine 5GA SR4 Generator
2XR 3196 Marine Engine 5GL 3126B Truck Engine
2YG 3176 Truck Engine 5GZ 3306B Industrial Engine
2ZC 3306 Generator Set 5HA SR4 Generator
304 3054E Industrial Engine 5JA SR4 Generator
30A 3208 Generator Set 5JC 3306 Generator Set
30Z 5650 Industrial Engine 5JC 3306B Generator Set
311 3011C Industrial Engine 5JD G3512 Gas Engine
313 3013C Industrial Engine 5JG 3114 Generator Set
31B D342 Industrial Engine 5JJ 3412E Machine Engine
32B D342 Marine Engine 5JZ 3116 Truck Engine
32B D342C Marine Engine 5KA SR4 Generator
32R D349 Vehicular Engine 5KD 3306B Truck Engine
32Y 3208 Truck Engine 5KJ 3406B Truck Engine
334 3054C Industrial Engine 5KJ 3406C Truck Engine
33B D343 Marine Engine 5KW 3508B Generator Set
344 3044C Industrial Engine 5LA SR4 Generator
34Z D379B Generator Set 5MA SR4 Generator
356 3056E Industrial Engine 5MF 3054B Industrial Engine
35B D399 Industrial Engine 5MJ 3516 Marine Engine
35Z D398B Generator Set 5NA SR4 Generator
36B 1140 Truck Engine 5NW G3406 Industrial Engine
36J D348 Industrial Engine 5PA SR4 Generator
36W 7271 Marine Transmission 5PG 3608 Gen Set (Military)
36Z D399 Generator Set 5PN G3516 Gas Engine
37Y 3304 Gas Engine 5PS 3508B Locomotive Engine
37Y G3304 Gas Engine 5PW 3508 Generator Set
38B D337F Marine Engine 5RA SR4 Generator
38J D348 Marine Engine 5RM 3116 Truck Engine
38S 3412 Industrial Engine 5SA SR4 Generator
39E 7241 Marine Transmission 5SJ 3516 Generator Set
39J D346 Industrial Engine 5TA SR4 Generator
3CF 3306 Gas Engine 5TD SR4 Generator
3CF G3304 Gas Engine 5TS 3116 Industrial Engine
3CS C10 Truck Engine 5UA SR4 Generator
3CW 3516B Marine Engine 5VA SR4 Generator
3CZ SPT342 Pumper 5WA SR4 Generator
3DM 3508B Marine Engine 5XA SR4 Generator
3DW 3508B Marine Engine 5XM 3508 Generator Set
3EF SR4 Generator 5XN 3176 Truck Engine
3ER 3406C Industrial Engine 5XS 3508B Reman Engine
3GS 3126B Marine Engine 5XZ SPT343 Pumper
3GW 3056 Generator Set 5YA SR4 Generator
3HM 3508 Marine Engine 5YF 3208 Generator Set
3JK 3412 Marine Engine 5YG 3406B Truck Engine
3JS 3516 Generator Set 5YL 3114 Truck Engine
3KS 3306C Truck Engine 5YS 3054 Industrial Engine
3LS 3508B Generator Set 5ZA SR4 Generator

Cat Engine Identification

Cat Engine SN Prefix 60B - BPJ

Prefix Model Prefix Model
60B D336 Marine Engine 83Z 3304 Generator Set
60M 3412 Marine Engine 83Z 3304B Generator Set
61P D349 Industrial Engine 84Z 3306 / 3306B Marine Engine
62B D343 Industrial Engine 85Z 3306 Generator Set
62M D333C Industrial Engine 86B D330A Marine Engine
62P D349 Marine Engine 88B D333A Marine Engine
62U D333C Industrial Engine 88V 3150 Generator Set
62W 3208 Truck Engine 88V 3150 Industrial Engine
63B D320A Industrial Engine 88V 3150 Truck Engine
63Z 3306 Truck Engine 89B 7261 Marine Transmission
63Z 3306B Truck Engine 89V 1145 Generator Set
64B G353D Gas Engine 89V 3145 Generator Set
64Z 3306 Industrial Engine 89V 1145 Truck Engine
65B 1693 Truck Engine 8AR 3412C Industrial Engine
65P 3145 Generator Set 8AZ 3406E Generator Set
65Z 3512 Industrial Engine 8BZ G3516 Generator Set
666 C6.6 Industrial Engine 8CN 3516B Marine Engine
66B D398 Industrial Engine 8DF 3512B Industrial Engine
66B D398B Industrial Engine 8EM 3512B Marine Engine
66D 3306 Industrial Engine 8FD SR4 Generator
66D D333C Industrial Engine 8FS 3406C Generator Set
66P 3150 Generator Set 8GK SR4 Generator
66X 7211 Marine Transmission 8HF SR4 Generator
66Z 3512 Marine Engine 8HW 3126 Truck Engine
67B D398A Marine Engine 8JJ 3306B Generator Set
67B D398B Marine Engine 8KN 3516B Marine Engine
67D 3306 Marine Engine 8LD G3516 Gas Engine
67D D333C Marine Engine 8LL 3608 Marine Engine
67P 3160 Generator Set 8LW G3412 Industrial Engine
67U 3408 Industrial Engine 8NM 3126 Marine Engine
67U 3408B Industrial Engine 8NS 3306B Generator Set
67Z 3512 Generator Set 8NW 3516B Generator Set
68B D379 Industrial Engine 8PN 3406C Truck Engine
68B D379B Industrial Engine 8PW G3516 Industrial Engine
68D G3304 Gas Engine 8RB 3606 Generator Set
68D G333C Gas Engine 8RB 3606 Industrial Engine
68Z 3508 Industrial Engine 8RB 3606 Locomotive Engine
69B D379A Marine Engine 8RB 3606 Marine Engine
69B D379B Marine Engine 8RG 3408B Marine Engine
69D 1673C Truck Engine 8RM 3512B Generator Set
69D 3306 Truck Engine 8SB 3406 Truck Engine
69Z 3508 Marine Engine 8SZ 3126 Truck Engine
6AA SR4 Generator 8TC 3406B Truck Engine
6AF 3114 Generator Set 8TL 3508 Marine Engine
6BA SR4 Generator 8TW 3516 Generator Set
6BR 3406E Industrial Engine 8WL 3116 Truck Engine
6BW 3176C Marine Engine 8XL 3304B Marine Engine
6CA SR4 Generator 8YF C12 Truck Engine
6DA SR4 Generator 8YL 3126B Truck Engine
6DC 3204 Industrial Engine 8YR G3408 Industrial Engine
6EA SR4 Generator 8YS C10 Truck Engine
6FA SR4 Generator 8ZD SR4 Generator
6FK 3054 Industrial Engine 8ZZ SPS343 Pumper
6FW G3408 Industrial Engine 90N 3208 Industrial Engine
6GA SR4 Generator 90U 3406 Industrial Engine
6GF SR4 Generator 91B D399 Marine Engine
6GW 3512B Generator Set 91U 3406 Marine Engine
6HA SR4 Generator 92U 3406 Truck Engine
6HN 3516B Generator Set 93B D334 Marine Engine
6HZ 3516B Locomotive Engine 94B 1674 Truck Engine
6JA SR4 Generator 95B 1160 Truck Engine
6JW G3512 Industrial Engine 95Y 3508 Industrial Engine
6LA SR4 Generator 96B 1150 Truck Engine
6LB 7261 Marine Transmission 96Y 3508 Marine Engine
6MA SR4 Generator 97B 1145 Truck Engine
6MC 3608 Generator Set 97N G343 Gas Engine
6MC 3608 Industrial Engine 97Y 3508 Vehicular Engine
6MC 3608 Locomotive Engine 98M 3160 Industrial Engine
6MC 3608 Marine Engine 98N D346 Vehicular Engine
6MK 3126 Marine Engine 98X 7221 Marine Transmission
6MS 3126 Industrial Engine 99U 3408 Marine Engine
6NA SR4 Generator 99U 3408B Marine Engine
6NB G3408 Gas Engine 9AB SR4 Generator
6NR 3054 Truck Engine 9AN 3516B Marine Engine
6NZ C15 Truck Engine 9AW G3508 Industrial Engine
6PA SR4 Generator 9BR 3412C Marine Engine
6PK SR4 Generator 9BZ 3456 Generator Set
6PM 3512 Generator Set 9CF SR4 Generator
6PN 3508B Generator Set 9CJ 3116 Truck Engine
6PZ 3126 Truck Engine 9CK 3176B Truck Engine
6RA SR4 Generator 9DG C9 Truck Engine
6RJ 3408B Gas Engine 9DS 3306B Generator Set
6RW 3126 Truck Engine 9EP 3412C Generator Set
6RZ SPF343 Pumper 9ER 3408C Industrial Engine
6SA SR4 Generator 9ES 3406C Generator Set
6SR 3126 Marine Engine 9FR 3612 Marine Engine
6SS 3512B Reman Engine 9GK 3116 Truck Engine
6TB 3406B Industrial Engine 9HB 3406 Industrial Engine
6TJ 3508 Locomotive Engine 9HK 3304B Generator Set
6TS 3406E Truck Engine 9HP C12 Marine Engine
6WA SR4 Generator 9KF 3516 Locomotive Engine
6WN 3512B Generator Set 9KS 3412E Marine Engine
6WW 3512 Generator Set 9LL 3114 Truck Engine
6YB 3304 Generator Set 9LN 3116 Truck Engine
6ZA SR4 Generator 9NN 3406E Generator Set
6ZM G3412 Gas Engine 9NR 3306B Generator Set
70B 1673 Truck Engine 9NS C12 Truck Engine
70R 3306 Industrial Engine 9NZ C15 Truck Engine
70Z 3508 Generator Set 9PL 3406B Generator Set
714 HT400 Pumper 9PW 3412E Marine Engine
715 SPP101 Pumper 9RC 3612 Generator Set
71B G342C Gas Engine 9RC 3612 Industrial Engine
71Z 3516 Industrial Engine 9RC 3612 Locomotive Engine
72B G379 Gas Engine 9RC 3612 Marine Engine
72B G379A Gas Engine 9RR G3412 Generator Set
72S 7155 Heavy-Duty Transmission 9SL 3306B Marine Engine
72Z 3516 Marine Engine 9SM C12 Truck Engine
73B G398 Gas Engine 9SZ 3126E Truck Engine
73Z 3516 Generator Set 9TD 3408B Industrial Engine
74B 1673 Truck Engine 9TG G3508 Gas Engine
74E 3192 Marine Transmission 9TL 3306C Truck Engine
74E 7251 Marine Transmission 9WC 3208 Industrial Engine
75B D398 Industrial Engine 9WF 3516B Industrial Engine
75B D398B Industrial Engine 9WK 3176B Marine Engine
75V 3208 Marine Engine 9WN 3508 Marine Engine
75Z 3406 Generator Set 9WR 3406E Marine Engine
76B D379 Industrial Engine 9XF 3412 Industrial Engine
76B D379B Industrial Engine 9XM 3408C Industrial Engine
76R 1673C Truck Engine 9YN 3116 Truck Engine
76R 3306 Truck Engine 9ZF 3126B Marine Engine
77B D353E Industrial Engine 9ZR 3126 Industrial Engine
78B 1673B Truck Engine AAG 3512B Marine Engine
78Z 3408 Generator Set AKB C10 Truck Engine
78Z 3408B Generator Set ALS C12 Truck Engine
78Z 3408C Generator Set B1A 3412C Reman Engine
7AF 3508B Industrial Engine B5G 3516B Marine Engine
7AG 3116 Truck Engine B5R C15 Truck Engine
7AK 3056 Generator Set B8D 3306B Generator Set
7AS 3126B Truck Engine B9P G3520C Generator Set
7BF SR4 Generator BAG 3508B Marine Engine
7BL 3412 Marine Engine BAK 3412C Generator Set
7CZ C16 Truck Engine BAX 3412C Generator Set
7DB G3412 Gas Engine BAZ G3408C Generator Set
7DS 3516B Reman Engine BCK 3516B Locomotive Engine
7EB 3204 Industrial Engine BCS 3412C Industrial Engine
7EF 3034 Industrial Engine BCW 3412C Generator Set
7EZ G3516B Generator Set BCX C10 Industrial Engine
7FB 3406B Truck Engine BCY C12 Generator Set
7HB 3306 Generator Set BDL C12 Industrial Engine
7HG 3412 Marine Engine BDN C18 Industrial Engine
7HJ 3116 Truck Engine BDT 3412 Industrial Engine
7HM 3512B Marine Engine BDZ 3126B Industrial Engine
7HS 3116 Truck Engine BEJ 3126B Industrial Engine
7JB 3306B Industrial Engine BEM C15 Industrial Engine
7JL 3116 Truck Engine BEN G3608 Industrial Engine
7JZ 3126 Truck Engine BFD 3408B Reman Engine
7KF 3306 Generator Set BFF 3408 Reman Engine
7KM 3516 Generator Set BFM C16 Industrial Engine
7LG 3176 Truck Engine BFT 3412E Industrial Engine
7LZ 3126 Truck Engine BGA 3456 Generator Set
7MS 3056 Industrial Engine BGW G3520B Generator Set
7NJ G3512 Gas Engine BGX 3508 Generator Set
7PR 3408E Industrial Engine BKD 3126B Truck Engine
7RJ 3306C Truck Engine BKE G3612 Industrial Engine
7RN 3516B Generator Set BKS 3412 Reman Engine
7SF 3116 Truck Engine BKY 3408E Reman Engine
7SM 3508B Marine Engine BLB G3616 Industrial Engine
7SZ G3512 Generator Set BLF 3512B Generator Set
7WR 3608 Industrial Engine BLJ 3412 Reman Engine
7XC 3406B Truck Engine BLM PM3508 Power Module
80B D333B Marine Engine BMB 3516B Generator Set
81Z 3412 Generator Set BNF 3412E Reman Engine
81Z 3412C Generator Set BNR PM3512 Power Module
82B D330B Marine Engine BPD PM3516 Power Module
83B 1673 Truck Engine BPJ 3516B Generator Set

Cat Generator Identification

Cat Engine SN Prefix BPX - ZYD

Prefix Model Prefix Model
BPX 3508B Industrial Engine KNS 3516B Reman Engine
BPY PM3508 Power Module KPS 3406C Generator Set
BRC 3512B Industrial Engine L1K C4.4 Generator Set
BRF PM3512 Power Module LBM C7 Truck Engine
BRK 3512B Generator Set LDL C280-6 Marine Engine
BRN 3512B Marine Engine LEE C13 Truck Engine
BTB 3508B Reman Engine LEF 3126B Truck Engine
BTR 3508B Reman Engine LEK 3516B Generator Set
BWA 3508B Reman Engine LGK C13 Industrial Engine
BXS C15 Truck Engine LLA 3512C Petroleum Industry Engine
C1G 3456 Generator Set LLB 3512C Petroleum Industry Engine
C1J C18 Marine Engine LLC 3508C Petroleum Industry Engine
C1M C1.6 Industrial Engine LLE 3508C Petroleum Industry Engine
C1Z C12 Marine Engine LLF 3512C Petroleum Industry Engine
C2G 3406C Generator Set LPD 3508B Generator Set
C2T 3456 Generator Set LRW 3306B Generator Set
C3G 3456 Generator Set LRX 3406C Generator Set
C3M C1.1 Industrial Engine LRY 3412C Generator Set
C4G 3456 Generator Set MAD G3520C Generator Set
C4M C2.2 Industrial Engine MBD C9 Industrial Engine
C5E C15 Generator Set MBJ C10 Truck Engine
C5G 3406C Generator Set MBL C12 Truck Engine
C5H C15 Generator Set MBN C15 Truck Engine
C5L C15 Generator Set MDP C18 Truck Engine
C5M C0.5 Industrial Engine MED C32 Power Module
C5N C1.5 Industrial Engine MEP C18 Truck Engine
C6C C18 Generator Set MGS C18 Generator Set
C6F C0.5 Industrial Engine MHP C15 Truck Engine
C6H C0.5 Industrial Engine MKH 3512B Marine Engine
C7B C7 Marine Engine MMC C4.4 Generator Set
C7D C7 Marine Engine MRG 3512B Marine Engine
C7M C0.7 Industrial Engine MSK 3516B Reman Engine
C7S C7 Truck Engine MSX 3516B Reman Engine
C7X C7 Marine Engine MTB C9 Truck Engine
C7Z C7 Marine Engine MXS C15 Truck Engine
C8G 3406C Generator Set N4F G3304 Industrial Engine
C9A C9 Marine Engine NAX C18 Marine Engine
C9B C9 Marine Engine NAY C18 Marine Engine
C9S C9 Truck Engine NDT C280-8 Marine Engine
CAC PM3516 Power Module NKB C280-16 Marine Engine
CAH 3456 Generator Set NPH C7 Truck Engine
CAJ PM3412 Power Module NPM 3512B Reman Engine
CAL 3516 Generator Set NSC 3512B Generator Set
CAN 3516B Industrial Engine NXS C15 Truck Engine
CAW 3508 Generator Set NZA 3612 Marine Engine
CBB 3508B Industrial Engine PAG 3516B Marine Engine
CBN 3516B Marine Engine PBR 3516B Generator Set
CBX 3456 Generator Set PES 3516C Petroleum Industry Engine
CCB 3456 Generator Set PFH 3406C Generator Set
CDE 3516B Marine Engine PKA C280-8 Marine Engine
CEY G3516B Generator Set PPS PP3516 Generator Set
CFD PMG3516 Power Module PTC 3516B Generator Set
CHN 3054 Generator Set PTD 3516 Generator Set
CJP C18 Truck Engine PTF 3512B Generator Set
CKH C18 Marine Engine PTG 3512 Generator Set
CKK 3126 Industrial Engine PTH 3508C Generator Set
CKM 3126E Truck Engine PTJ 3508B Generator Set
CKP C9 Truck Engine PTK 3508C Generator Set
CKS 3056 Marine Engine PTL 3412C Generator Set
CLJ C9 Industrial Engine PTM 3512B Generator Set
CLX C30 Marine Engine PTN 3508B Generator Set
CMC 3512B Generator Set PWG 3512B Industrial Engine
CMD 3516 Generator Set R1A 3512C Petroleum Industry Engine
CME G3516B Generator Set R7A G3412 Generator Set
CMJ 3512 Generator Set R7E G3406 Generator Set
CNB 3508B Generator Set RDW C280-12 Marine Engine
CND 3512B Reman Engine REA 3412D Marine Engine
CNF 3508 Generator Set RKT 3516 Generator Set
CNR G3306 Generator Set RLA C15 Marine Engine
CPA 3516B Generator Set RLR 3412C Generator Set
CPD C12 Truck Engine RMN 3616 Marine Engine
CPG G3516 Generator Set RMS 3512C Generator Set
CPJ G3508 Generator Set RNC C32 Marine Engine
CPP 3034 Marine Engine RTY 3412C Generator Set
CPS G3508 Generator Set RXB C32 Marine Engine
CPW 3516B Reman Engine S1M C4.4 Generator Set
CPY G3508 Generator Set S2A 3508B Marine Engine
CRN G3512 Generator Set S2B 3508B Marine Engine
CRP 3126E Truck Engine S2D 3508B Marine Engine
CSB SBF214 Pumper S2E 3508B Marine Engine
CSC G3516B Generator Set S2F 3508B Marine Engine
CSH 3054B Marine Engine S2G 3512B Marine Engine
CSM 3116 Truck Engine S2H 3512B Marine Engine
CSN C9 Marine Engine S2J 3512B Marine Engine
CSP G3512 Generator Set S2K 3512B Marine Engine
CSZ G3516 Generator Set S2L 3512B Marine Engine
CWD G3520B Generator Set S2M 3512B Marine Engine
CWW G3520C Generator Set S2N 3512B Marine Engine
CWY G3520C Generator Set S2P 3516B Marine Engine
CYK 3054 Marine Engine S2R 3516B Marine Engine
CYN C18 Marine Engine S2S 3516B Marine Engine
DCD 3126B Industrial Engine S2T 3516B Marine Engine
DCS 3126B Industrial Engine S2W 3516B Marine Engine
DED 3304B Generator Set S2X 3516B Marine Engine
DJN 3412C Generator Set S2Y 3516B Marine Engine
DKE C18 Generator Set S2Z 3516B Marine Engine
DLA 3408 Reman Engine SAP C7 Truck Engine
DLR G3508 Gas Engine SBG 3512C Generator Set
DPF 3126E Truck Engine SBJ 3516C Generator Set
DWB C27 Generator Set SBK 3516C Generator Set
E3J C3.3 Industrial Engine SCB C280-6 Marine Engine
ECP 3408E Reman Engine SDP C15 Truck Engine
EFA 3306B Generator Set SDW 3512B Reman Engine
EGH C15 Truck Engine SJB C9 Generator Set
EJG C18 Industrial Engine SLY G3516E Generator Set
EKW C18 Generator Set SMP C32 Petroleum Industry Engine
EPE 3456 Generator Set SNX 3056 Generator Set
ETK C9 Truck Engine SRB C9 Truck Engine
FDE 3512B Generator Set SSR G3512E Generator Set
FDN 3516B Generator Set STD C18 Generator Set
FDR 3512 Generator Set STM C18 Generator Set
FDX 3516B Generator Set STR C27 Generator Set
FFG 3512B Marine Engine SXC C32 Generator Set
FML C7 Truck Engine SXY G3520E Generator Set
FMM C7 Truck Engine T2X 3516C Locomotive Engine
G1P 3011C Industrial Engine TAF C1.5 Generator Set
G3E 3126E Truck Engine TAG C2.2 Generator Set
G3P 3013C Industrial Engine TAK 3516B Generator Set
G4C C18 Generator Set TAM 3408C Generator Set
G4P 3024C Industrial Engine TCN 3054 Generator Set
G6X G3306 Industrial Engine TDX C280-16 Marine Engine
G7M C2.2 Industrial Engine TFT 3412C Generator Set
G7N C1.5 Industrial Engine TGC 3412 Generator Set
G8M C1.1 Industrial Engine TJB G3516C Generator Set
GAR 3516B Generator Set TJC G3516C Generator Set
GAS G3516E Generator Set TLD C32 Industrial Engine
GET G3520B Industrial Engine TME C12 Truck Engine
GHJ 3456 Generator Set TSJ C280-12 Marine Engine
GLS C11 Industrial Engine TTA 3508C Marine Engine
GNS G3512 Gas Engine TTB 3508C Marine Engine
GSB G3516C Generator Set TWM C27 Industrial Engine
GZG G3520E Generator Set W1A C16 Truck Engine
GZH G3520E Generator Set WAX C7 Truck Engine
GZJ G3520C Generator Set WDR C32 Generator Set
GZK G3520C Generator Set WJH C18 Industrial Engine
GZL G3520C Generator Set WPM G3508 Gas Engine
GZM G3520C Generator Set WPN G3508 Gas Engine
GZN G3520C Generator Set WPP G3512 Gas Engine
GZP G3520B Generator Set WPR G3512 Gas Engine
GZR 3516 Generator Set WPS G3516 Gas Engine
GZS 3516B Generator Set WPT G3516 Gas Engine
GZT 3516B Generator Set WPW G3516 Gas Engine
GZX 3516 Generator Set X3R C9 Generator Set
GZY 3516B Generator Set X4R C15 Generator Set
GZZ G3516C Generator Set X6X C18 Power Module
HAL G3520E Generator Set X9X C9 Marine Engine
HAT G3520C Generator Set YPG C7 Truck Engine
HEP 3126E Truck Engine Z2A 3126B Petroleum Industry Engine
JAM C13 Truck Engine Z2B C10 Industrial Engine
JAS C15 Industrial Engine Z2C C15 Petroleum Industry Engine
JAW C2.2 Generator Set Z2D 3412E Petroleum Industry Engine
JCA G3306 Generator Set Z9X C9 Marine Engine
JLW C9 Industrial Engine ZAB 3508 Generator Set
JRA C7 Industrial Engine ZAD 3508B Generator Set
JRE C15 Industrial Engine ZAF 3512 Generator Set
JSC C9 Industrial Engine ZAH 3512B Generator Set
JTF C7 Industrial Engine ZAJ 3512B Generator Set
KAL C7 Truck Engine ZAL 3516 Generator Set
KAM 3508B Reman Engine ZAP 3516B Generator Set
KAP G3412 Generator Set ZAR 3516B Generator Set
KAR G3406 Generator Set ZAZ G3516 Generator Set
KCA C11 Truck Engine ZBA G3516 Generator Set
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Cat Truck Engine Identification

Identifying the correct serial number on a Caterpillar engine or generator is essential for finding accurate parts, service information, and technical specifications. Every Cat power unit, whether an industrial engine, truck engine, marine engine, or generator set - carries a unique serial number plus additional identifiers such as the Modification Number, Arrangement Number, OEM Number and Performance Specification for complete gensets.

Cat Industrial Engine Identification

The serial number is typically referenced on the plate by the label, “serial number” or abbreviated version, such as S/N or SER. NO. Now that you've identified your serial number, you can look up parts for your engine by model and serial number or from official CAT's Parts Manuals.

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