The Kubota 1J09421780 Piston Kit is a genuine OEM replacement part designed for Kubota D902 and Z602 diesel engines. This kit features a 0.25mm oversize piston, crucial for engine rebuilds where cylinders have been bored. It ensures precise fitment and restores original compression and power, maintaining the reliability and efficiency of your Kubota machinery. Manufactured to Kubota's stringent quality standards, this piston kit is essential for proper engine maintenance and repair.