You can install this oil level control (also called oil level glass) if your original oil level control is broken or yellowed. Exchange it when you do your next oil change. Sometimes it is easier to break the glass of the old oil level control in order to remove it.
R13 F650GS 00- (0172,0182)
R13 F650GS 04- (0175,0185)
R13 F650GS Dakar 00- (0173,0183)
R13 F650GS Dakar 04- (0176,0186)
Ring (metal cap) beneath steering head bearing in OEM...