Help needed with stihl fs250r trimmer

[bottlefed89]

Hey I have a trimmer that has a broken piston ring I need to replace. . . I have had my local shop order me a ring set 4 times now, and they have never been correct... Any stihl techs out there have the power to give me the correct part number??
thanks
greg

 

[Lakeside53]

The number I see is 4119 034 3003, 40mmx1.5mm

Hard to see any confusion - there is only one ring type for the FS250.