Seals and Gaskets: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| NP241 | ||||
| Input Shaft Seal | 1.7 | 0.0 | B | |
| NOTE | ||||
| With Skid Plate, Add | 0.4 | 0.2 | B | |
| Output Shaft Seal | ||||
| Front | 1.1 | 0.0 | B | |
| Rear | 1.3 | 0.0 | B | |
| Rear Seal | 1.7 | 1.2 | B | |
| NP231 Non-Synchro, NV231 | ||||
| Input Shaft Seal | 1.8 | 0.0 | B | |
| Output Shaft Seal | 1.7 | 1.2 | B | |
| Front Seal | 0.9 | 0.6 | B |