The cover of a head of the block of cylinders is made of aluminum alloy thanks to what has small weight and possesses high sound-absorbing characteristics. On a cover there is an inflow for installation of the sensor of provision of a cam-shaft which is located in its back part. In a cover of a head of the block of cylinders of L3 engines there is an opening for installation of the oil operating valve (OCV)
(fig. 2.3).