Part Number: 74957

Fits: Fits Stihl 031, 032 , 028, 038, MS380, MS381, FS420, FS360, FS500, FS550, FS550L, BR320, BR400, BR320L, BR340, BR420, BR420C, BR380, SR320, SR400, SR340 & SR420. Replaces: 9640 003 1340

Size: 13mm x 22mm x 5mm