Valve Spring: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| Dual Timing Chain | ||||
| 323 | ||||
| One | 13.7 | 9.6 | B | |
| All Cylinders | 16.7 | 11.8 | B | |
| 328i | ||||
| One Cylinder | 9.4 | 7.8 | B | |
| All Cylinders | 11.6 | 9.7 | B | |
| 328iC, is, Ci | ||||
| One Cylinder | 9.5 | 7.9 | B | |
| All Cylinders | 11.8 | 9.8 | B | |
| M3 | ||||
| Convertible | ||||
| Manual Trans | ||||
| One | 13.7 | 9.7 | B | |
| All | 16.7 | 11.8 | B | |
| Auto Trans | ||||
| One | 13.7 | 9.8 | B | |
| All | 16.7 | 11.9 | B | |
| Coupe | ||||
| One | 13.7 | 9.7 | B | |
| All | 16.7 | 11.8 | B |