| Part | Manufacturer | OEM Part # | Price | Notes |
| 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. |
| THM 200-4R, 4 Speed |
| Speedo Driven Gear |
| Order By Description |
| THM 250, 250C, 350 & 350C |
| Speedo Driven Gear |
| 18 Teeth | GMO | 3987918 | 7.07 | Parts & Prices For Estimating Purposes. Order Number & Color. |
| 19 Teeth | GMO | 3987919 | 7.07 | Order Number & Color |
| 20 Teeth | GMO | 3987920 | 7.07 | |
| 21 Teeth | GMO | 3987921 | 7.07 | Order By Gear Ratio. |
| Speedo Drive Gear |
| Order By Description |
| THM 700-R4 |
| Speedo Driven Gear |
| Order By Description |
| Speedo Drive Gear |
| Order By Description |