| 2420021-2 | Piston pin | Alco / MLW | | |
| 24200212-2 | Piston pin with sleeve | Alco / MLW | | |
| 24200413 | Piston single bolt steel cap (also DLW 10142733, 10142732, 10142605, 10142731) | Alco / MLW | | |
| 24200424 | Miscellaneous engine parts | Alco / MLW | | |
| 2420046-5 | Piston flat top 5 groove | Alco / MLW | | |
| 2420049 | Steel caped (crown head) | Alco / MLW | | |
| 2420051-1 | Piston ring set standard size | Alco / MLW | | |
| 24200512 | Piston ring set standard size | Alco / MLW | | |
| 24200512-1 | Piston ring set standard (5 ring per set) | Alco / MLW | | |
| 24200517 | Consisting of five ring in one set | Alco / MLW | | |
| 2420052 | Piston ring set standard size | Alco / MLW | | |
| 2420055-1 | Piston ring set standard size | Alco / MLW | | |
| 2420056 | Piston ring set standard size | Alco / MLW | | |
| 2420058 | Piston ring set standard size | Alco / MLW | | |
| 2421017-1 | Taper face comp. ring | Alco / MLW | | |
| 2421018 | Compression piston ring (taper face) 0.030 oversize | Alco / MLW | | |
| 24210210 | Scraper piston ring | Alco / MLW | | |
| 24210211 | Compression piston ring (taper face) 0.015 versize | Alco / MLW | | |
| 24210212 | Compression piston ring (square face) 0.015 oversize | Alco / MLW | | |
| 24210216 | Compression piston ring (square face) 0.030 over size | Alco / MLW | | |
| 24210217 | Compression piston ring (taper face) 0.030 oversize | Alco / MLW | | |
| 24210218 | Compression piston ring, chrome plated (square face) 0.015 oversize | Alco / MLW | | |
| 24210219 | Compression piston ring (taper face) 0.015 o/s width | Alco / MLW | | |
| 2421022-2 | Scraper piston ring | Alco / MLW | | |
| 24210223 | Conformable scraper piston ring | Alco / MLW | | |
| 24210232 | Barrel face comp. piston ring | Alco / MLW | | |
| 24210233 | Taper face comp. piston ring | Alco / MLW | | |
| 24210234 | Ring compression (barrel face) 0.015 oversize | Alco / MLW | | |
| 24210235 | Ring, compression (barrel face) 0.030 oversize | Alco / MLW | | |
| 24210236 | Ring compression (taper face) 0.015 oversize | Alco / MLW | | |
| 24210237 | Ring, compression (taper face) 0.030 oversize | Alco / MLW | | |
| 24210240 | Square face compression plasma piston ring | Alco / MLW | | |
| 2421024-1 | Sq.face chrome plated comp piston ring | Alco / MLW | | |
| 2421025 | Compression piston ring, chrome plated (square face) 0.030 o/s width | Alco / MLW | | |
| 2421028-1 | Comression piston ring square face | Alco / MLW | | |
| 2421028-2 | Sq face comp. piston ring | Alco / MLW | | |
| 2421029-1 | Taper face comp. piston ring | Alco / MLW | | |
| 2421071 | Sleeve bushing | Alco / MLW | | |