The CaseIH Steiger 645 Quadtrac is a powerful articulated crawler tractor introduced in 2024 as part of the Steiger Quadtrac Series. It features a turbocharged 12.9L 6-cylinder FPT Cursor 13 diesel engine delivering up to 689.4 hp gross power. The tractor uses a 17-speed full power shift PowerDrive transmission and offers advanced articulated power steering. It is equipped with a closed center hydraulic system with multiple pump flow options and a rear IVN hitch with substantial lift capacity. The Steiger 645 Quadtrac is designed for heavy-duty farming applications requiring high power and traction.