This thesis examines how net-zero strategies can be translated into operational supply chain actions in the off-highway manufacturing sector. Although corporate climate commitments have increased significantly, their practical implementation remains challenging in industrial contexts characterised by complex products, long life cycles, limited production volumes and fragmented global supplier networks. The off-highway sector provides a relevant setting for this investigation. Production relies heavily on carbon-intensive materials and upstream industrial processes, resulting in a large share of emissions being concentrated in Scope 3 categories, outside the direct control of original equipment manufacturers (OEMs). Therefore, addressing decarbonisation in this context cannot rely solely on improving internal efficiency, but requires engagement with suppliers and closer coordination along the whole supply chain.