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.
Outer diameter: 40mm
K26 R900RT 05-09 SF (0367,0387)
K26 R900RT 10-13 SF (0330,0340)
K26 R1200RT 05-09 (0368,0388)
K26 R1200RT 10-13 (0430,0440)