100 PK Rotary 15855 Air Filter Panel Fits Stihl 4180-141-0300B FS111 FS131 FS91 by Rotary $615.95 Save -4% 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart PRODUCT DESCRIPTION Brand New 100 PK Rotary 15855 Air Filter Panel Fits Stihl 4180-141-0300B FS111 FS131 FS91... Genuine Rotary Part # 15855