These are the characteristics of the 912 W:

Air-cooled 3-, 4-, 5- and 6-cylinder in-line engines.
DEUTZ-two-stage combustion.
PTOs via gear, flywheel and v-belt pulley.
High torque at low speed.
Modular system with single cylinder arrangement and high degree of parts commonality.
Customized component system with many different peripheral parts.
Extremely compact design.