| Part | Manufacturer | OEM Part # | Price | Notes |
| Trans Gasket & Seal Kit | GMO | 8635977 | 131.00 | Contact Dealer for most current part and price information. |
| Trans Overhaul Kit | GMO | 8635978 | 203.00 | Contact Dealer for most current part and price information. |
| Trans Snap Ring Kit | GMO | 8635912 | 7.05 | Contact Dealer for most current part and price information. |
| Snap Ring Kit |
| THM 325-4L, 4 Speed | GMO | 8635912 | 7.05 | Contact Dealer for most current part and price information. |
| Seal & Gasket Repair Kit |
| THM 325-4L, 4 Speed | GMO | 8635977 | 131.00 | Contact Dealer for most current part and price information. |
| Overhaul Kit |
| THM 325-4L, 4 Speed | GMO | 8635978 | 203.00 | Contact Dealer for most current part and price information. |