| Part Number | Description | Centac Model |
| P1405340-00302 | TubroBlend 32 compressor oil equivalent to Ingersoll Rand Techtrol Gold. 55 gallon drum. | 4C |
| P1405340-00301 | TubroBlend 32 compressor oil equivalent to Ingersoll Rand Techtrol Gold. 5 gallon pail. | 4C |
| MAINT-4C125 | Aftermarket Overhaul Kit. | 4C125 / 150 |
| MAINT-4C90110 | Aftermarket Overhaul Kit. | 4C90 / 110 |
| 7X12728 | Aftermarket Air Cooler | 4C |
| 177D6 | Aftermarket Bullgear Bearing | 4C125 |
| 1X18443 | Aftermarket Bullgear Seal | 4C125 |
| 1X18444 | Aftermarket Seal Installation Tool | 4C125 |
| 3X21 | Aftermarket Air Seal | 4C125 |
| 5X276 | Aftermarket Thrust Bearing | 4C125 |
| 807C6-1 | Aftermarket Oil Seal | 4C125 |
| C1067 | Aftermarket Gasket Kit | 4C125 |
| 1CS038 | 1st Cooler Clean & Rep. | 4C125 - 4C164 |
| 1CS039 | 2nd Cooler Clean & Repair | 4C125 - 4C165 |
| 1CS041 | 4th Cooler Clean & Repair | 4C125 - 4C167 |
| 1RS039 | 1st Rotor Clean & Balance | 4C125 - 4C168 |
| 1RS040 | 2nd Rotor Clean & Balance | 4C125 - 4C169 |
| 1RS041 | 3rd Rotor Clean & Balance | 4C125 - 4C170 |
| 1RS042 | 4th Rotor Clean & Balance | 4C125 - 4C171 |
| 5X12436 | Aftermarket Third Stage Plain Bearing | 4C125 / 150 |
| 5X12437 | Aftermarket Fourth Stage Plain Bearing | 4C125 / 150 |
| 5X12438 | Aftermarket First Stage Plain Bearing | 4C125 / 150 |
| 5X12439 | Aftermarket Second Stage Plain Bearing | 4C125 / 150 |
| 7X1436 | Aftermarket First Stage Thrust Bearing | 4C125 / 150 |
| 177D6 | Aftermarket Bullgear Bearing | 4C90 |
| 1X18443 | Aftermarket Bullgear Seal | 4C90 |
| 1X18444 | Aftermarket Seal Installation Tool | 4C90 |
| 3X21 | Aftermarket Air Seal | 4C90 |
| 807C6-1 | Aftermarket Oil Seal | 4C90 |
| C1067 | Aftermarket Gasket Kit | 4C90 |
| 1CS034 | 1st Cooler Clean & Rep. | 4C90 - 4C121 |
| 1CS035 | 2nd Cooler Clean & Repair | 4C90 - 4C122 |
| 1CS036 | 3rd Cooler Clean & Repair | 4C90 - 4C123 |
| 1CS037 | 4th Cooler Clean & Repair | 4C90 - 4C124 |
| 1RS035 | 1st Rotor Clean & Balance | 4C90 - 4C125 |
| 1RS036 | 2nd Rotor Clean & Balance | 4C90 - 4C126 |
| 1RS037 | 3rd Rotor Clean & Balance | 4C90 - 4C127 |
| 1RS038 | 4th Rotor Clean & Balance | 4C90 - 4C128 |
| 5X1410 | Aftermarket Fourth Stage Plain Bearing | 4C90-110 |
| 5X246 | Aftermarket First Stage Plain Bearing | 4C90-110 |
| 5X276 | Aftermarket Thrust Bearing | 4C90-110 |