Part# 11-03530
MFR Model# 4581
Bulb #VoltsWattsPAR #Part No.


Galaxy Landing Light Bulbs
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


It is what is advertised.

Walden A
January 2, 2020

Purchased a Galaxy 4313 for installation on a Bonanza A36 Taxi Light. The outside diameter on the Galaxy bulb is 4.440 while the OD on an original GE 4313 is 4.340. The Galaxy may not fit because the tolerance is not the same as the GE bulb. Otherwise looks like a good, robust part, for applications where size isn't such a factor.

Matthew A
July 14, 2014

does not come with the screws needed to put on wires for connection. STAY AWAY! original screws will not work, good luck if you buy this thing. obsecure size for thread

February 21, 2018

Purchased two Galaxy 4553 28V landing lights to replace GE4553 bulbs. The Galaxy lights have three bumps on the back and a curved front lens. GE bulb has a flat front lens and single bump for indexing on the back. The Galaxy 4553 bulb will not fit where a GE4553 bulb was installed. Do not buy as a replacement for the GE bulb

Charlie G
June 3, 2015


Please note,'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. 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: Are the Galaxy 4594 landing light bulbs FAA/PMA approved?

Per the manufacturer, no they are not FAA Approved.

Q: Please advise if the Galaxy 4591 is FAA approved?

While the Galaxy 4591 is a great landing light, it is not FAA approved.

Q: Are the 4509Q landing lights FAA /PMA approved?

No, they do not hold a FAA/PMA approval.

Q: What are bulb diameters for #4313 and #4522?

The 4313 bulb is a PAR36 bulb, with a diameter of approximately 4-1/2 inches. The 4522 bulb is a PAR46 bulb, with a diameter of approximately 6 inches.

Q: What is the diameter of 4509Q?

4.5 inches diameter.