Canon XA4-9170-409 EF-EOS Screws
Canon YG2-2062 Power Diaphragm
Genuine Canon power diaphragm assembly for the EF 24-70 2.8 L USM lenses. Made by Canon Japan. Unfortunately, this part has been discontinued and is no longer available.
TechNote. Many times the issue you may have with your lens points to the power diaphragm unit, when actually the FPC (flexible printed circuit) has broken and needs replacement. In stock here.
Canon YA2-4183 Lens Collar
Canon YA2-4147 Lock Knob
Canon YB2-5697 Shaft Screw
Canon YB2-0019 Window Tape
Canon YA2-1788 Frame Nut
Canon YA2-1765 Cam Barrel
Genuine Canon cam barrel for the EF 50 1.4 USM lenses. 2 types of cam barrels are available. The new style barrel is reinforced at the area most easily damaged when the lens is impacted or dropped. That is the only difference. If you replace a damaged cam barrel with the revised unit, the cam followers YA2-1777 should also be replaced, available here. If you are installing the old style barrel, no upgraded parts are required. We still have plenty of the old style barrels in stock. Made by Canon Japan.
Use option to select New or Old style part.
Canon XA1-7170-407 EF-EOS Screws
Canon XA1-7170-307 EF EF-S EOS Screws
Canon CY1-2497 Lens Mount
Genuine Canon lens mount for the EF 180 3.5 L Macro, EF 300 4.0 L IS USM, EF 400 5.6 L USM, EF 70-200 2.8 L IS USM, EF 70-200 2.8 L USM, and other EF lenses. Made by Canon Japan. See the detail chart below for the proper place to measure your lens mount. Then choose from the most popular sizes. We stock the most common mount 2.10. We can order other available sizes.
Canon YA2-2062 EF Collar
Canon Screws EF CA2-4924
Canon YA2-0596 EF Screws
Canon YF2-2073 Lens Mount
Canon CY1-4292 Lock Unit “E” Clip
USCamera "E" clip for the hood lock unit shaft for the ET-120, ET-138, ET-155, and ET-160 hoods. Package of 2 clips. Made in Japan. If you need the screws that retain the hood lock unit on the lens hood, go here. Need a complete new lock unit?
Canon CA2-4923 Brass Collar
Genuine Canon brass collar for the EF 100-400 4.5-5.6L IS USM lens. Made by Canon Japan. The screw required to retain this collar is available here.
Use the choose an option and select from available sizes.
Use the choose an option and select from available sizes. 
Canon YG2-2169 Power-Diaphragm FPC
Canon CA1-9407 EOS Screws
