Suppliers of quality earthmoving replacement parts
Rotating Group
A piston pump is made up of a rotating group barrel that rotates around a shaft, and seven to nine pistons are installed in a cylinder block with brass shoes attached. With each revolution of the cylinder block, the pistons travel inside the bore. The flow is generated in this way. During service, it is recommended that all pistons be replaced if they are to be changed. Depending on your needs, we can sell each of these components separately or in a complete group.
Additional Information
Our Caterpillar aftermarket rotating group products include but are not limited to the part numbers below. We sell other Hydraulic Parts too. Click the links here to view these products.
| Engine Model/Application | Barrel Part No. | Piston Part No. | |
|---|---|---|---|
| 345B, 385C, 120H, 143H | 1559136 | 1559112 (9) | |
| 120H, 135H, 140H | 1588966 | 2959689 (9) SET | |
| 12G, 130G, 140G | 9J8660 | 8J2022 (9) | |
| 12G, 14G, D6H | 9T7774 | 9T7765 (9) | |
| 14G, 16G, 225, 245 | 9J2417 | 1U2738 (9) | |
| D8R, D9R | 9T8448 | 9T8452 (9) | |
| 215, 215B | 9J3522 | 8J2037 (9) | |
| 225B, 793D | 9T3370 | 9T3371 (7) | |
| 307C, 4M40 | 1949987 | 1076666 (9) SET | |
| 318B | 1709959 | 1858979 (9) SET | |
| 318BL | 1709960 | 1858979 (9) SET | |
| 320, 320B, 320L | 1184053 | Included w/ Barrel | |
| 320, 320B, 320L | 1184054 | Included w/ Barrel | |
| 320, 320L | 5I8631 | 5I8632 (9) | |
| 320B, 325B | 874783 | 0995713 (7) | |
| 320B, 322C, 325D | 1347134 | 1475860 (9) SET | |
| 320C, 320CL | 1733496 | 1915709 (9) SET | |
| 320C, 320CL | 1733498 | 1915709 (9) SET | |
| 322C, 325C | 1948371 | 1884210 (9) SET | |
| 322C, 325C | 1948374 | 1884210 (9) SET | |
| 325, 325L | 7Y4209 | 4I8834 | |
| 325, 325L, 330L | 1111116 | 4I6448 (9) SET | |
| 325B | 1336777 | 1475860 (9) SET | |
| 330, 330L | 5I4311 | 5I8401 (7) | |
| 330, 330L | 856259 | 5I4171 (9) SET | |
| 330C, 345B, 522B | 1884097 | 2835980 (7) | |
| 330D, 345C | 2478710 | 2959691 (9) SET | |
| 336F, 340F, 349D | 1884164 | 3349982 (9) SET | |
| 345B | 1709976 | 2959687 (9) | |
| 350, 350L | 7I8179 | 7I8178 (9) SET | |
| 350, 350L | 7I8180 | 7I8178 (9) SET | |
| 416D, 420D, 430D | 1960226 | 6E6151 (9) | |
| 416E, 422E, 428E | 1683380 | 1683384 (9) | |
| 426, D4 | 9T3026 | 9T3018 (9) | |
| 426B, D11R | 6E4007 | 6E6151 (9) | |
| 446B | 9T7757 | 9T7761 (9) SET | |
| 446B, 545C | 1165305 | 1165298 (9) | |
| 623F, 623G | 9T1687 | 1656969 (7) | |
| 834K, 836K , 962M, D6T | 2667836 | 2334880 (9) | |
| 914G, 939C, D4C | 1331848 | 1261400 (9) | |
| 938G | 9T8250 | 9T8249 (9) | |
| 938H, 962H, 966H, 972H | 2560083 | 1884210 (9) SET | |
| 963D, D7E, D8T | 2717599 | 6E4358 (9) | |
| 980M, 982M | 2861674 | 1970079 (9) | |
| 992, 994 | 9J8667 | 4T3122 (9) | |
| 924F, 928G, 988F | 9T3863 | 9T3868 (9) SET | |
| D6H, D6H LGP | 9T7729 | 9T7731 (9) | |
| D7R | 1410828 | 9T4180 (9) | |
| 627G, D8R | 1838446 | 6E4358 | |
| E180, E240 | 4I9472 | 4I9469 (SET) | |
| E200B, EL200B | 996342 | 0963989 (9) SET | |
| E180, E240 | 4I9473 | 0963989 (9) SET |