| Part | Manufacturer | OEM Part # | Price | Notes |
| Extension Housing Gasket |
| 4 Speed |
| Warner & Muncie |
| Gasket | GMO | 10147919 | 5.50 | Contact Dealer for most current part and price information. For those Not Listed, Order By the Year Number Of Teeth & Color. |
| Case Gasket |
| 4 Speed |
| Warner & Muncie |
| Gasket | GMO | 10147920 | 5.34 | Contact Dealer for most current part and price information. |
| M1984-88 | GMO | 12524261 | 6.92 | Contact Dealer for most current part and price information. Order By Size. |
| Without M18 | GMO | 14024319 | 0.00 | |
| With M18 | GMO | 14024318 | 751.00 | Order By Size. |
| 70mm |
| Gasket | GMO | 7316448 | 0.00 | |
| Case Cover Gasket |
| 4 Speed |
| Warner & Muncie |
| Gasket | GMO | 3709316 | 2.63 | Contact Dealer for most current part and price information. Order By Size. |
| Extension Housing Seal |
| 4 Speed |
| Warner & Muncie |
| Seal | GMO | 14053338 | 14.09 | Contact Dealer for most current part and price information. |
| 70mm |
| Seal | GMO | 8673526 | 8.55 | Order Number & Color |
| Bell Housing Gasket |
| 4 Speed |
| 70mm |
| Gasket | GMO | 7316456 | 5.20 | Contact Dealer for most current part and price information. |
| Overhaul Gasket Kit |
| 4 Speed |
| Without Warner | GMO | 3886338 | 13.69 | |
| With Warner | GMO | 3960199 | 9.03 | Contact Dealer for most current part and price information. |