The MaxFlow® filter kit to fit Stihl® Models MS661, MS660C-M, MS661R C-M chainsaws with the polyolefin HD2 filter. Kit includes everything you need to convert your saw: Two High flow, washable foam elements, (one green for standard cutting and one white for extreme cutting conditions), Maxflow cage, custom backing plate and an OEM style close fit rain cover.
This helps your saw breath better during prolonged use in adverse conditions, resulting in smoother running and more power. Unlike pleated filters, MaxFlow filter elements are washable and re-usable so they last longer and cost less. Foam elements do require the use of foam filter oil (sold separately).
For more than 30 years MaxFlow® filters have featured ONE PIECE foam elements with no glued seams to fall apart.
MaxFlow filter kit replaces the Polyolefin HD2 Stihl Pleated Air Filter P/N: 1144 140 4400
