This document pertains to the 821 Wheel Loader, a robust piece of equipment designed for demanding operational environments. While specific production years are not detailed, this parts catalog provides comprehensive coverage for the entire machine, including detailed engine components. Its engineering is focused on reliability and efficient performance, making it a valuable asset for various industrial and construction applications. This English-language parts catalog, spanning 580 pages, offers detailed parts explosions and exploded views to facilitate accurate part identification. It is an essential resource for servicing, rebuilding, and repairing the 821 Wheel Loader. The manual's primary purpose is to assist users in identifying and sourcing the correct replacement parts, ensuring the machine's continued optimal function and longevity.