REVERSE GEAR UNIT

Canon YG9-0365-000 Reverse Gear Unit is a replacement lens part for the EF 70-200 mm f/2.8L IS II USM. Canon’s parts catalog identifies it by this exact number as a reverse gear unit, making it a specific component for lens servicing.

The catalog lists three of these units in the lens parts list. A specialist parts retailer also lists the part for the EF 70-200 2.8 L USM and EF 70-200 2.8 L IS USM lenses, as well as the IS II USM version.

This listing concerns the gear unit itself; the sources do not specify additional contents or dimensions.