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Aluminum Cooling Louvers

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Part# 08-07625


These aluminum cooling louvers are custom made and designed to improve the cooling of your engine compartment on your experimental aircraft. They are simple to install, and will dramatically lower your CHT temps, as well as your oil temperature.

The standard size of the aluminum plate is 12 long and 5 wide, and the outside flange can be trimmed to fit your application. There are a total of 9 louver slots which aid in cooling.
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  • 12 X 5 X .032 thick
  • 9 louver slots


Worked Perfect! Thank you!

Dale E Verified Purchase


June 7, 2021

Nice and simple, worked great for fender vents on the race car

Wallace S
November 27, 2020

This product is very high quality and works well. Brought my CHT temperatures down and they look really nice too!

May 27, 2020

These are well made and worked perfectly for my application

Terry S
May 25, 2020

Delivered as promised and looked great, can’t wait to install on my 1961 Shasta Trailer.

Rick C
April 23, 2020

Very high quality item. These are made from a soft grade aluminum to avoid cracking. Not sure what previous poster is talking about, but I have used about 10 of these over the past 5 years and they have always been excellent quality and easy to install.

January 23, 2020

Ive used a bunch of these louvers. They work great and are very high quality.

January 21, 2020

These are cheaply made. Every louver has cracks from stamping. I probably will not use. I am going to make some from scratch.

October 5, 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: What spec aluminum are the cooling louvers made of?

These are made of 5052 soft grade non-structural aluminum.

Q: what is the size of the 9 louver slots, (size of each louver)?

They are 3" wide and 13/16" deep.

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