| Part | Manufacturer | OEM Part # | Price | Notes |
| Fluid Pan Gasket |
| THM 400 |
| Gasket | GMO | 8655625 | 9.84 | Contact Dealer for most current part and price information. |
| THM-700-R4/4L60 |
| Gasket | GMO | 8654799 | 9.42 | Contact Dealer for most current part and price information. |
| Valve Body Gasket Kit |
| THM 400 |
| Gasket | GMO | 8670393 | 9.94 | Contact Dealer for most current part and price information. |
GMO | 8670447 | 12.72 | Order By Description. | | Extension Housing Seal |
| THM 400 |
| Oil Seal | GMO | 8655031 | 8.48 | |
| THM-700-R4/4L60 |
| Extension, With Bush & Seal | GMO | 8667634 | 56.75 | Contact Dealer for most current part and price information. |
| Seal | GMO | 8673526 | 8.55 | Order Number & Color |
| Extension Housing Gasket |
| THM 400 |
| Gasket | GMO | 8624709 | 8.48 | |
| Oil Pump Seal |
| THM 400 |
| Oil Seal | GMO | 24210605 | 7.93 | |
| Governor Cover Gasket |
| THM 400 | GMO | 8670381 | 4.32 | |
| Gasket & Seal Kit |
| THM-700-R4/4L60 | GMO | 24201804 | 158.99 | Contact Dealer for most current part and price information. |