This genuine Stihl air filter is a crucial part that prevents dirt, dust and debris from entering the engine. This type of air filter is made with a panel of flocked material that ensures fine particles of dust and debris don't make their way into the engine. Part number 1127 120 1621 is for use on select Stihl 029, 030, 031, 039, MS 290, MS 310 and MS 390 chainsaw models.
Chainsaws: 029, 030, 031, 039, MS 290, MS 310, MS 390