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Part# 11-03917
MFR Model# 8497K1


Prevents inadvertent operation of the switch. Switch can be operated only when the spring-loaded guard is lifted up. Returning guard to the down position forces the switch lever to the off position. Single-hole type for neck-mount switches such as AN3021 and AN3027. Three-hole type for panel-mounted switches such as AN3023. Color: Red.

California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


  • 1-Hole Switchguard: 5/8" W x 1-5/8" L. 1/2" Hole


EXCELLENT! Exact Mil spec match to what is already in my aircraft. Positive powerful closing snap. Disregard the other reviews on here that say the size isnt right for a Mil spec toggle switch, It is. It works perfectly, and closes fully. A mil spec toggle should be set to the proper height using the screws to adjust during install. I have these in my aircraft and they are exactly right. No dremel needed. Just set the proper switch height.

July 10, 2022

Keiji K Verified Purchase


November 5, 2021

Bad design. Does not cover threaded neck of toggle switch. Dremeled and dremeled but it still looks half-open. Disappointing.

Paul P Verified Purchase


February 24, 2022

These are supposed to match with the AN3021, not so much. The guard is too narrow for the toggle so in does not really fit over the handle when closed. Looks very unprofessional.

Steve W
January 14, 2019


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Will this work to guard a switch on as well as off?

No, this switch guard is intended to prevent inadvertent operation of the switch.

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