Moto Guzzi spacer for many uses including on air filter housing for California 2. 

8 mm long x 8.16 mm OD, 6.2 mm ID

Sold each.

Guzzi part number 91180607

Consult your parts manual for proper fitment.

Happy to combine shipping with other items. Items usually ship out within 1 day after payment. If you have any questions or need more pictures just let us know.