The Kubota K5243-71830 is an authentic OEM 42-inch left-side mower blade designed for optimal cutting performance and durability. This genuine replacement part ensures a precise fit and reliable operation for compatible Kubota lawn tractors and zero-turn mowers, including models such as the GR2000, GR2010, GR2100, GR2110, T1870, T2080, T2290, Z121SKH, and Z122R. Manufactured to Kubota's strict quality standards, this blade provides efficient grass cutting and maintains the integrity of your mowing deck.