| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes |
| Replace |
| 3T40 | 10.8 | 8.0 | A | Includes: R&I Transaxle. |
| NOTE |
| With Compressed Natural Gas, Add | 0.5 | 0.4 | A | |
| 4T40E |
| Drive Gear | 12.7 | 9.3 | A | Includes: R&I Transaxle. |
| NOTE |
| With Compressed Natural Gas, Add | 0.5 | 0.4 | A | |
| With AC, Add | 1.2 | 1.1 | A | |
| Driven Gear | 12.7 | 9.3 | A | Includes: R&I Transaxle. |
| NOTE |
| With Compressed Natural Gas, Add | 0.5 | 0.4 | A | |
| With AC, Add | 1.2 | 1.1 | A | |
| Drive Chain | 12.7 | 9.3 | A | Includes: R&I Transaxle. |
| NOTE |
| With Compressed Natural Gas, Add | 0.5 | 0.4 | A | |
| With AC, Add | 1.2 | 1.1 | A | |
| Drive Sprocket Support | 13.7 | 10.0 | A | Includes: R&I Transaxle. |
| NOTE |
| With Compressed Natural Gas, Add | 0.5 | 0.4 | A | |
| With AC, Add | 1.2 | 1.1 | A | |