The Krone 002509091 Tension Pulley Arm is an original equipment manufacturer (OEM) spare part designed for Krone BiG M series self-propelled mowers. This essential component maintains proper belt tension, crucial for the efficient and reliable operation of the machine's drive systems. Manufactured to Krone's stringent quality standards, it ensures durability and precise fitment, extending the lifespan of associated belts and pulleys. Compatible with models such as BiG M 400, BiG M 420, BiG M 450, and BiG M 500.