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AML Q4509 Sealed Beam Bulb

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Part# 11-12157
MFR Model# AML-Q4509


This sealed beam is 12-13 volt, 100 watts and is 4 1/2" in Diameter.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


  • 12-13 Volts
  • 100 Watts
  • 4 1/2" Diameter
  • 114 MM
  • Frequently Purchased With
  • Customers Also Viewed


Well see how long they last, but their useful life is longer than the non-quartz lights I was using, and they seem to be much brighter as well. Exact fit for my 172.

Phil S
November 30, 2020

Quartz unit much better than original, arrived on time an not broken....

Mike C
October 19, 2017

I installed the landing light and it works great. The first light came through broken in transit. Aircraft Spruce immediately replaced it with another light. VERY PLEASED with customer service!

George P
May 4, 2017


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: The terminals on back of this AML Q4509 lamp do not appear to be labelled with pos and neg identifications. Does polarity matter with installation?

The polarity does not matter on this unit.

Q: Are these AML Q4509 bulbs FAA Approved or PMA parts?

No, this does not carry any certifications on their own. Replacement bulbs can be covered under the airframe STC for certified install. Please check with your A&P to determine if these can legally installed in your aircraft.

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