Crank mechanism parts:
A - engines of all models of cars except "320" and "320i";
B - engines of cars of the models "320" and "320i"
1 — crankshaft; 2 — crankshaft main bearing shells; 3 — middle main bearing shells; 4 - segment keys; 5 — connecting rod; 6 — connecting rod bearing shells; 7 — connecting rod upper head bushings; 8 — piston; 9 — piston pin; 10 — oil scraper ring; 11 - lower compression ring; 12 - Upper compression ring; 13 — crankshaft pulley; 14 — toothed pulley of the crankshaft (until November 1978.); 15 — toothed pulley of the crankshaft (since November 1978.); 16 — flywheel; 17 — leading flange on cars with automatic transmission; 18 - cylindrical pin; 19 - pins on cars with automatic transmission; 20 — centering bearing of the primary shaft of the gearbox; 21 - felt ring; 22 - needle bearing; 23 — bushing.