Request replacement parts for white plastic corner window Sash Cam

A handy person from San Carlos, CA says:
July 8, 2023
Hi. Just bought a house with old aluminum frame single pane glass dual hung windows and trying to repair them. On 2 of the windows the upper right white plastic corner window Sash Cam is broken. See pictures of another window with the white sash cam (not broken). If you could tell me what the correct replacement part is that would be great. I don't know who the window manufacturer is or even how old the windows are. I would guess they are likely 40+ years old? Thank you, Kevin
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Bob from SWISCO responded:
July 9, 2023

Thanks for writing in. Based off appearance alone, our 18-052 Top Sash Guide comes to mind. Review the diagrams below, compare to your undamaged guide, and let me know if anything differs, and if so, by how much.

Alternate view of 18-052
Alternate view of 18-052
Alternate view of 18-052
Alternate view of 18-052
A handy person from San Carlos, CA says:
July 14, 2023
Thank you for your response. Unfortunately the 18-052 Top Sash Guide is close but not the correct part and slightly too small. See my attached pictures and LMK if you know what the correct part is. Thank you for your help.
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Paul from SWISCO responded:
July 14, 2023

Thanks for getting back to us. Unfortunately, I've been unable to find a good match for this top sash guide based on the dimensions provided. Of all the parts in our inventory, the only product that has any chance of working is our 18-052. If that didn't fit, then we don't have anything better.

I am very sorry for the inconvenience .
Top Sash Guide, 3/4"
Top Sash Guide, 3/4"
18-052
$1.99
Sash Carrier, 15/16"
Sash Carrier, 15/16"
18-185
$1.37
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How to Replace a Top Sash Guide [1080p]
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