Plastic guides in window track just above tilt latch

A quick learner from New Baden illinois says:
Years of sun exposure has made theses "guides?" brittle. Don't know how to shop for replacements.
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Jasmine from SWISCO responded:

Thanks for posting! The part you are searching for appears to be the coil support for a coil balance assembly. Yours reminds me of the 15-205 3/8" Egress Coil Triple Support. To confirm that this is the right fit, take a look over the dimensions shown below.

Alternate view of 15-205
Alternate view of 15-205

Alternate image for 15-205
Alternate image for 15-205

How to replace a window coil balance
How to replace a window coil balance
VIDEO
WATCH >
How to Replace a Triple Coil Balance System
How to Replace a Triple Coil Balance System
VIDEO
WATCH >
How to Replace a Window Tilt Latch
How to Replace a Window Tilt Latch
VIDEO
WATCH >
Anatomy of a tilt window
Anatomy of a tilt window
VIDEO
WATCH >
How to Replace Damaged Pivot bars
How to Replace Damaged Pivot bars
VIDEO
WATCH >
Removing a Triple Coil Window Balance
Removing a Triple Coil Window Balance
GUIDE
READ >
Styles of Tilt Window Latches
Styles of Tilt Window Latches
GUIDE
READ >
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