Features： 1、 Fitment: Air cleaner is replacement for Stihl MS210 MS230 MS250 021 023 025 chainsaw, and replace part number is 1123 120 1613. 2、 Material: Air filter and spark plug are made of plastic and steel material, wear resistant, high strength and durable. 3、 Performance: Professional manufacturing, exquisite workmanship, high accuracy, high efficiency, stable performance and high reliability. 4、Original Standard: According to original standard, you can directly replace the old or broken chainsaw air filter, has a long service time. 5、Simple Installation: The installation is simple, no complicated operation is required, convenient for using, save your time and energy. Specification： Item Type: Air Filter Material: Plastic, steel Weight: Approx. 75g/2.65oz Replace Part Number: 1123 120 1613. Fitment: Replacement for Stihl MS210 MS230 MS250 021 023 025 chainsaw Package List： 2 xAir Filter 1 x Spark Plug