NWP Air Filter (Heavy Duty 2) for Stihl MS440, 441, 460, 461, 661, 880 (Replaces 0000 150 4402)

Replacement air filters from NWP. Heavy duty air filters give you the highest performance for your Stihl chainsaws, due to their large surface area. These filters have a cloth pre filter, which catches the larger material, and a foam filled core, which catches the fine material. Heavy Duty filters work very well (which is a good thing), but tend to ice up in sub freezing conditions. We recommend using a nylon mesh filter air filter when sawing in frozen conditions. These air filters are oil-less. Filters can load up quickly, so be sure to have a couple of spares handy.