This came off of a Stihl RB400 with very low hrs. It got water in the cylinder and rusted the cylinder wall. This is an OEM part and is made specifically for the RB400 however it may work on other machines as well. The engine is a Kohler SH270 which shares a lot of parts with the SH265 but does have some differences. Please check that this part will work with your machine before purchase.