Cylinder Head and Oil Pan

The engine oil pan is made up of two cast aluminum sections. The primary section incorporates strengthening ribs at strategic attachment points. As with other BMW engines, this feature creates a "unitized" engine/transmission assembly which reduces flex, vibration and noise.



The cylinder head cover provides ease of service and effective noise reduction. All cylinder head contact points are rubber insulated. A "Stop" incorporated into the holddown bolt shank base prevents insulator grommet distortion from overtightening.
A spark plug cable removal tool is stored in the spark plug recess within the cylinder head cover.



Further, an insulation baffle and the crankcase gas liquid/vapor separator act as a barrier for valve train operating noises.