REMANUFACTURING CATERPILLAR ENERGY SOLUTIONS X-CHANGE The X-Change program is a parts replacement program for medium and large MWM branded engines and a perfect example of circular economy principles. By remanufacturing and selling X-Change parts, engines and gensets, customers benefit from quick and cost-effective overhauls and repair services on-site. This maximizes uptime of the power and heat-generating power plants for both MWM and Cat branded product lines. The replaced parts that reached the initial serviceable lifetime are returned to Caterpillar Energy Solutions where they are cleaned, disassembled, inspected and remanufactured to like- new condition. Technology updates that reduce emissions and increase efficiency while improving reliability are included. In this way significant lifecycle extension, including greenhouse gas emission reduction, is achieved. CATERPILLAR DEFENSE During disaster response or aid delivery, amid surge or rapid deployment, in wartime or peacetime, Caterpillar Defense responds to each operation’s needs, including offering solutions that extend the lifecycle of products. Through the military Service Life Extension Program, Cat dealers give machines a complete second lifecycle at a fraction of new replacement cost. We also have Caterpillar trained, qualified technicians who conduct repairs on military bases and customize replacement parts to local needs. CAT CERTIFIED REBUILD In the same spirit as Cat Reman, Cat Certified Rebuild programs increase the lifespan of equipment by providing customers with product updates at a fraction of the cost of buying a new machine, enabling us to extend the life of materials. A complete Cat Certified Rebuild includes more than 350 tests and inspections, automatic replacement or reconditioning of approximately 7,000 parts and a like-new machine warranty. Trained dealer service professionals perform rebuild work using genuine equipment and parts while incorporating the latest engineering updates. Caterpillar provides information, data, training and service tools to help dealers decide which parts to reuse to achieve the expected longevity of rebuilt components. Since 1985, Caterpillar and our dealers have rebuilt more than 37,000 machines, powertrains and components. 38CATERPILLAR 2021 SUSTAINABILITY REPORT