The cylinder block is made of cast iron, the cylinder head and the coolant pump housing are made of aluminum alloy. The forged steel crankshaft is supported by five bearings.
The piston is cast from a special aluminum alloy and is connected by a floating piston pin to the connecting rod. Piston rings are cast iron. The first ring has a barrel-shaped outer surface and internal chamfers, the second ring has a conical outer surface with an undercut. The oil scraper ring is composite, scraper type with a spring expander.
In the cylinder head are tent-type combustion chambers. The inlet and outlet valves are made of heat resistant steel. The valves are driven by rocker arms. To automatically adjust the clearance in the valve drive, hydraulic compensators are installed.
The cast camshaft is supported by five (intake valve shaft) or six (exhaust valve shaft) bearings and secured with covers. The camshafts are driven from the crankshaft by a toothed belt. The belt tension is regulated by an automatic tensioner.
The engine is balanced by the forces of inertia of the second order by two additional shafts. Balance shafts are top left and bottom right (view from the timing belt) and are driven by a toothed belt from the crankshaft, the belt tension is maintained by a special roller.