The Claas 01428331 is a genuine OEM tensioner pulley designed for optimal performance in Claas combine harvesters (Lexion, Tucano series), forage harvesters (Jaguar series), and tractors (Xerion series). This critical component ensures proper belt tension, contributing to the efficient operation and longevity of your machinery's drive systems. With an outer diameter of 100 mm, an inner diameter of 17 mm, and a width of 25 mm, it meets stringent Claas specifications for reliable fit and function.