Range Burner Cap and/orTrim ring(are both needed?)

The stove has been in storage for a while and now we cannot find the burner caps (listed as Part #AP2125864) or Trim rings (listed as part #2125989). Are both of these parts needed before we use the stove? And the next question is are they really $23.00 and $39.00 apiece?

Just before using the surface burners. Them missing shouldn’t affect oven operation or use.

Currently the site says $23 and $[SIZE=“3”]29[/SIZE] respectively for those items.

LINK > AP2125989 Burner Cap
LINK > AP2123864 Burner Trim Ring

JFYI

Dan O.
www.Appliance411.com
The Appliance Information Site

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Does the burner require both the Cap and the trim ring? Thank you so much for the reply. ShirleyL.