Arm replacement left window

A quick learner from Massachusetts, USA says:
Hi:
I just want to be sure I am ordering the right parts. I am looking to replace the arm and guide. I believe these are what I need based on the pictures above -
Arm
https://www.swisco.com/EntryGard-Operator-9-1_2-inch-Arm-Left-Handed/pd/Casement-Window-Replacement-Operators/39-031

guide
https://www.swisco.com/11-3_8-inch-Entrygard-Track/pd/Replacement-Window-Operator-Tracks/39-505
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Casey from SWISCO responded:

Hello,

The operator in your photos resembles the 39-032 EntryGard operator with the gears on the right side of the base. You'll also need to confirm that the dimensions shown below match up to your assembly, paying close attention to the length of the shorter link arm. 

You are also correct that the 39-031 and 39-032 are compatible with the 39-505 track. Thanks for posting! 

Dimensions for 39-032
Dimensions for 39-032

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