•  Both camshafts run without camshaft bearings on five mountings in the upper part of the cylinder head.

•  The exhaust camshaft directly drives the vacuum pump, which engages in a groove on the connecting flange of the camshaft.

•  The sprockets are shrunk-fit onto the shaft spigots. Each of the two sprockets has two thrust surfaces for axial guidance of the camshafts.

•  The sprockets and thrust surfaces are integrated into a single component. The axial guidance of the camshafts is achieved by inserting the camshafts into the corresponding recesses in the upper part of the cylinder head.