The Cat Certified Rebuild Program offers a like-new component with a like-new warranty and a new serial number, all at a reasonable cost of a comparable new component. The program starts with a complete machine inspection. Then the machine is completely disassembled and rebuilt from the ground up to include all Cat product updates. More than 350 tests and inspections (plus the automatic replacement of more than 7,000 parts) ensure the same high level of quality as a new Cat machine. Uses CAT REMAN Parts when available.
https://www.cat.com/en_US/support/maintenance/certified-rebuild.html