The Stihl PF12400 clutch drum sprocket is a vital component designed for various Stihl chainsaws, including the MS250, MS230, MS210, 025, 023, and 021 models. Featuring a 6-tooth sprocket with a 3/8" pitch, this durable part ensures efficient power transfer from the engine to the saw chain, providing reliable cutting performance. It is an essential replacement part for maintaining optimal chainsaw operation and is an equivalent to Stihl OEM part 11236402003.