Cylinder head with lid, BMW, N63O1, B40, B44
| Cylinder head height: Original dimension | mm | 134.00 ± 0.05 |
| Machining limit | mm | 133.70 ± 0.05 |
| Valve guides are not available as replacement parts. | ||
| Inner diameter of installed valve guide | ||
| Original intake valve | mm | 6.00... 6.02 |
| Original exhaust valve | mm | 6.00... 6.02 |
| Tilt clearance, maximum (wear between valve and valve guide) |
mm | 0.06...0.22 |
| Bearing of camshaft Guide bearing (width) |
mm | 13.99... 14.04 |