The Chelsea 489DFMAX-56XD is a 489 Series mechanical power take-off designed for heavy-duty transmission-driven auxiliary power applications. This 8-bolt PTO is configured with a Detroit/Daimler DT12-style mounting option, MA input option, no-pressure lube option, double-acting air shift without installation kit, and XD standard driveline output. The XD output uses a 1-1/4" keyed shaft with a 5/16" key, making this PTO suitable for remote/driveline-mounted auxiliary equipment setups.