Oregon 49-443 Primer Bulb Lawn Mower Replacement Part Oregon 49-443 Replacement Primer Bulb For many Poulan chain saws Models include 222, 255, 262, 1900, 1950, 2025, 2050, 2075, 2055, 2150, 2155, 2175, 2250, 2350, 2375, 2450, 2550, BH2160, BH2660, PP220, PP221, PP230, PP260, PPB1634, PPB1838, SM4018 Replaces Poulan 530071835, 530047213