| Part | Manufacturer | OEM Part # | Price | Notes |
| New Process 261 |
| Extension Housing |
| Part Of Rear Case. |
| Rear Case |
| Without 6 Speed Manual | GMO | 12473226 | 414.12 | |
| Front Case |
| Without 6 Speed Manual | GMO | 12473204 | 630.66 | |
| 136, 236, 246 |
| Case |
| Front Half | GMO | 12474948 | 844.21 | |
| Rear Half | GMO | 12474949 | 496.37 | |
| 241, 243 |
| Extension Housing | GMO | 15665311 | 168.00 | |
| Rear Case |
| With 4 Speed Auto | GMO | 15547435 | 249.23 | |
| Front Case | GMO | 12384941 | 486.65 | Contact Dealer for most current part and price information. |
| 1370, 4401 & 4470 |
| Extension Housing |
| Fixed | GMO | 15580308 | 143.36 | |
| Dual Rear Wheels | GMO | 15635149 | 220.50 | Contact Dealer for most current part and price information. |
| Rear Case | GMO | 15662232 | 482.08 | |
| Front Case | GMO | 12544065 | 691.29 | Contact Dealer for most current part and price information. |