MACK Truck
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| Year Model or Engine | Cyl. Dia. | No. Cyl. | Piston Rings |
| Set No. | Qty & Width |
| Comp | Oil |
| EN11 Eng. | 3 3/16 | 6 | 2C4116
4116
| 18 - 1/8 | 6 - 1/4 |
| EN12 Eng. Comp. Ring on Skirt | 3 5/16 | 6 | 2C5092
5092
| 24 - 1/8 | 6 - 1/4 |
| EN253 FO Eng. | 3 1/2 | 6 | 2C5012
| 18 - 1/8 | 12 - 3/16 |
| FO Eng. | 3 1/2 | 6 | 2C5012
| 18 - 1/8 | 12 - 3/16 |
| CU Eng. 5 Ring Piston | 3 7/8 | 6 | 2C4064
4064
| 18 - 1/8 | 12 - 3/16 |
| EN354 Eng. | 3 7/8 | 6 | 2C4064
4064
| 18 - 1/8 | 12 - 3/16 |
| BC, CE, EN300 Engs. 5 Ring Piston | 4.000 | 6 | 2C5033
| 18 - 1/8 | 12 - 3/16 |
| BC, CE, EN330 Engs. 4 Ring Piston | 4.000 | 6 | 2C4007
| 18 - 1/8 | 6 - 3/16 |
| EN331, 377 Engs. A30H | 4.000 | 6 | 2C5388
| 6 - 3/32
12 - 1/8 | 12 - 3/16 |
| EN405 Eng. Late 5 Ring Piston | 4.000 | 6 | 2C5033
| 18 - 1/8 | 12 - 3/16 |
| EN415 Eng. | 4.000 | 6 | 2C5033
| 18 - 1/8 | 12 - 3/16 |
| FU Eng. 5 Ring Piston | 4.000 | 6 | 2C5033
| 18 - 1/8 | 12 - 3/16 |
| EN401, EN402 Engs. | 4 1/16 | 6 | 2C5242
| 18 - 3/32 | 12 - 3/16 |
| EN431A Eng. | 4 1/8 | 6 | 2C5155
| 6 - 3/32
12 - 1/8 | 12 - 3/16 |
| EN464, EN464A, B, 510A, B, C Engs. | 4 7/16 | 6 | 2C5271
| 12 - 3/32 | 12 - 3/16 |
| BJ, BK, CT Engs. 4 Ring Piston | 4 1/2 | 6 | 2C4056
| 18 - 1/8 | 6 - 3/16 |
CT Eng.
5 Ring Piston | 4 1/2 | 6 | 2C5081
5081
| 18 - 1/8 | 12 - 3/16 |
EN525 Eng.
5 Ring Piston | 4 1/2 | 6 | 2C5081
5081
| 18 - 1/8 | 12 - 3/16 |
| EN540 Eng. | 4 9/16 | 6 | 2C6371
| 12 - 3/32 | 12 - 3/16 |
| EN707, EY Eng. | 5.000 | 6 | 2C5050
| 18 - 1/8
6 - 3/16 | 6 - 3/16 |
| EN707, A, B, C, ENF707C, EY Engs. | 5.000 | 6 | 2C5550
| 6 - 3/32
12 - 1/8 | 12 - 3/16 |
| (FOR ENGINES OTHER THAN MACK)(Refer to engine listing by make and model) (H) | | 0 | | | |
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