| Part | Manufacturer | OEM Part # | Price | Notes |
| THM 180 |
| Speed Drive Gear | GMO | 90064073 | 10.38 | Contact Dealer for most current part and price information. Order By Color. |
| THM 200 & 200C - 3 Speed |
| Speedo Driven Gear |
| 18 Teeth | GMO | 3987918 | 7.07 | Parts & Prices For Estimating Purposes. Order Number & Color. |
| 35 Teeth | GMO | 9780628 | 10.89 | Parts & Prices For Estimating Purposes. Order Number & Color. |
| 40 Teeth | GMO | 1362048 | 8.28 | Contact Dealer for most current part and price information. Parts & Prices For Estimating Purposes. Order Number & Color. |
| 45 Teeth | GMO | 9775187 | 8.28 | Contact Dealer for most current part and price information. Parts & Prices For Estimating Purposes. Order Number & Color. |
| Speedo Drive Gear |
| 18 Teeth | GMO | 8623316 | 7.60 | Contact Dealer for most current part and price information. |
| 19 Teeth | GMO | 8628891 | 6.30 | Contact Dealer for most current part and price information. |
| 20 Teeth | GMO | 8628894 | 5.83 | |
| 21 Teeth | GMO | 8679984 | 29.06 | Contact Dealer for most current part and price information. |