| Part | Manufacturer | OEM Part # | Price | Notes |
| Fluid Pan Gasket |
| THM-125 (3T40) |
| Pan Gasket | GMO | 8678168 | 17.86 | Contact Dealer for most current part and price information. |
| 4T60E, 4T65E |
| Oil Pan Gasket | GMO | 24204624 | 49.88 | |
| Valve Body Gasket Kit |
| THM-125 (3T40) |
| Gasket | GMO | 8652506 | 6.75 | Contact Dealer for most current part and price information. |
| 4T60E, 4T65E |
| Gasket Kit | GMO | 8651925 | 8.41 | |
| Gasket |
| Part Of Gasket Kit. |
| Transaxle Side Oil Seals |
| 4T60E, 4T65E |
| Axle Oil Seal | GMO | 8666007 | 8.48 | Contact Dealer for most current part and price information. |
| Case Cover Gasket |
| THM-125 (3T40) |
| Pan Gasket | GMO | 8678169 | 13.58 | |
| Gasket | GMO | 8631979 | 24.16 | Contact Dealer for most current part and price information. |
| 4T60E, 4T65E |
| Side Cover Gasket Kit | GMO | 8644902 | 47.94 | All Converters Are Remanufactured, Order By Description. |
| Extension Housing Gasket |
| 4T60E, 4T65E |
| Seal | GMO | 8651419 | 8.09 | |
| Gasket Kit |
| THM-125 (3T40) | GMO | 8631914 | 126.26 | Contact Dealer for most current part and price information. |
| Gasket Kit, With Seals |
| 4T60E, 4T65E | GMO | 24204811 | 227.19 | Contact Dealer for most current part and price information. |
| Overhaul Gasket Kit |
| THM-125 (3T40) | GMO | 8665960 | 240.82 | Contact Dealer for most current part and price information. |