Air filter brush cutter blower hedge trimmer compatible HUSQVARNA PARTNER HUSQVARNA models K750 PARTNER models: K750 PRE-FILTER AVAILABLE WITH CODE 40270865 Code: 40270864 Original code: 544 18 16-02 , 544 18 16-01 , 506 36 72-02 , 506 38 75-02 SR m