Engine with the letter designation BSW
BSW 1 - Radiator; 2 - Oil radiator; 3 - Coolant temperature regulator; 4 - Liquid cooling system pump; 5 - Cylinder block; 6 - Equalizing tank; 7 - Upper coolant pipe, bolted to cylinder head cover; 8 - Connecting pipe, on the cylinder head; 9 - Heat exchanger of the heating system; 10 - Connecting pipes, heat exchanger of the heating system; 11 - Cooler of the EG recirculation system, after replacement, change the entire filling volume of the coolant; 12 - Coolant pipe; 13 - Quick-acting coupling
Engine with the letter designation BLS
BLS 1 - Equalizing tank; 2 - Coolant hose; 3 - Cylinder block; 4 - Cooler of the EG recirculation system, after replacement, change the entire filling volume of the coolant; 5 - Heat exchanger of the heating system; 6 - Oil radiator; 7 - Radiator; 8 - Liquid cooling system pump