The first Detroit Diesel 71 series engines appeared in 1938. Their very successful design has not lost its relevance today, although Detroit Diesel 71 series engines have been modernized more than once. The size of the working volume of the cylinder remained unchanged: for each of them there are 71 cubic meters. inch.
Depending on the modification, modern Detroit Diesel 71 series engines have:
Detroit Diesel 71 Series IL engines feature a reduced profile design. This is indicated by the letter L. The V marker indicates the V-configuration of the arrangement of the cylinders.