| Part | Manufacturer | OEM Part # | Price | Notes |
| Fluid Pan Gasket |
| THM 200 & 200C - 3 Speed |
| Gasket | GMO | 8648529 | 4.42 | Contact Dealer for most current part and price information. |
| THM 200-4R, 4 Speed |
| Gasket | GMO | 8657387 | 8.67 | Contact Dealer for most current part and price information. |
| THM 250, 250C, 350 & 350C |
| Gasket | GMO | 25504700 | 7.00 | Contact Dealer for most current part and price information. |
| THM 700-R4 |
| Gasket | GMO | 8642360 | 7.79 | Contact Dealer for most current part and price information. |
| Extension Housing Seal |
| THM 200-4R, 4 Speed |
| Oil Seal | GMO | 8673526 | 8.55 | Order Number & Color |
| THM 200 & 200C - 3 Speed |
| Oil Seal | GMO | 8673526 | 8.55 | Order Number & Color |
| THM 250, 250C, 350 & 350C |
| Seal | GMO | 8673526 | 8.55 | Order Number & Color |
| THM 700-R4 |
| Seal | GMO | 8673526 | 8.55 | Order Number & Color |
| Extension Housing Gasket |
| THM 250, 250C, 350 & 350C |
| Seal | GMO | 1358899 | 2.89 | |
| Oil Pump Seal |
| THM 200 & 200C - 3 Speed | GMO | 8630921 | 0.00 | |
GMO | 8630921 | 0.00 | | | THM 200-4R, 4 Speed |
| Seal | GMO | 8630921 | 0.00 | |
| THM 250, 250C, 350 & 350C |
| Oil Seal | GMO | 6261413 | 2.82 | |
| THM 700-R4 |
| Seal | GMO | 8630921 | 0.00 | |
GMO | 8630921 | 0.00 | |