| Part | Manufacturer | OEM Part # | Price | Notes |
| 3T40 |
| Case | GMO | 8653918 | 649.96 | |
| Valve Body Cover | GMO | 8677084 | 53.99 | Contact Dealer for most current part and price information. |
| Cover With Sleeve | GMO | 8653969 | 347.60 | Contact Dealer for most current part and price information. |
| Case Assembly | GMO | 8653918 | 649.96 | |
| 4T60 |
| Case, With Bushing | GMO | 8668985 | 792.22 | |
GMO | 8668985 | 792.22 | | | Cover | GMO | 8685537 | 120.92 | Contact Dealer for most current part and price information. |
| Case | GMO | 8668985 | 792.22 | |
| 4T60E |
| Case | GMO | 8651931 | 986.51 | |
GMO | 8651931 | 986.51 | | | Case Side Cover | GMO | 8685537 | 120.92 | Contact Dealer for most current part and price information. |