The STIHL 11380302003 Piston is an original equipment manufacturer (OEM) replacement part, specifically designed with a 50mm diameter. This high-quality piston ensures optimal engine performance and durability for various STIHL chainsaw models, including the MS 441, MS 441 C, MS 461, and MS 461 R. Manufactured to STIHL's rigorous standards, it provides a precise fit and reliable operation, crucial for maintaining the efficiency and lifespan of your equipment. This piston is a critical component for engine repair and maintenance.