Air Injection Check Valve: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| Exhaust Manifold Mounted | 0.6 | 0.5 | B | |
| To Converter | 0.5 | 0.4 | B |
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| Exhaust Manifold Mounted | 0.6 | 0.5 | B | |
| To Converter | 0.5 | 0.4 | B |