| Part | Manufacturer | OEM Part # | Price | Notes |
| Fluid Pan Gasket |
| THM-125C/3T40 |
| Gasket | GMO | 8678168 | 17.86 | Contact Dealer for most current part and price information. |
| THM440-T4 & HM4T60 |
| Gasket | GMO | 8656396 | 8.51 | Contact Dealer for most current part and price information. |
| Case Cover Gasket |
| THM-125C/3T40 |
| Gasket Kit | GMO | 8631979 | 24.16 | Contact Dealer for most current part and price information. |
| Gasket & Seal Kit |
| THM-125C/3T40 | GMO | 8631914 | 126.26 | Contact Dealer for most current part and price information. |
| Gasket Kit, With Seals |
| THM440-T4 & HM4T60 |
| 1ST Design | GMO | 8644915 | 68.00 | Contact Dealer for most current part and price information. |
| 2ND Design | GMO | 8646942 | 156.67 | Contact Dealer for most current part and price information. |