The cylindrical pin, code 06.22020-1214.0, is a precision alignment and positioning element used throughout the MAN L21/31 engine assembly. Designed to ensure exact component placement, it maintains structural alignment between mating parts such as bearing caps, housings, and structural casings. Manufactured from hardened steel to withstand shear forces and vibration, this pin plays a crucial role in maintaining dimensional accuracy and long-term mechanical stability. Though compact in size, it is fundamental to ensuring repeatable assembly quality and reliable engine performance under demanding marine and industrial operating conditions.