Part# 09-01620
MFR Model# HS594015


Use to clean, brighten and transform badly corroded aluminum to its natural appearance.


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Alumiprep is outstanding. It cleans aluminum perfectly. Takes the paint off and makes a much better surface to prime. It is amazing how dirty parts are. Ones that look clean arent. This stuff does the trick, but it is shipped hazardous. It was expensive and slow to receive. Order early if you need it.

Jimmy K Verified Purchase


August 3, 2023

As advertised.

Deb-co E Verified Purchase


June 24, 2022

Works quickly and thoroughly. Used to prep machined aluminum parts prior to alodine 1201 treatment and the results were outstanding.

David L
May 29, 2020

Worked great! Had a spider from an older HE3 Whirlpool Front Load washer go bad. Got a good used one that needed a good cleaning. Afterwards a basic wash in C-IC 33 AERO to remove whatever it removes :-) and water no longer beaded, and coated it in enamel to protect against corrosion as recommended by other techs. Well see how long this one lasts!

Chip C
June 29, 2019

Excellent service

Jose Z
December 20, 2018

Good chemical to preclean aluminum prior to painting to remove oxidation. Best shipping prices.

Wade E
March 22, 2018

Done what was expected, Cleaned very well.

Larry P
March 12, 2017

works really well diluted per instructions

Dennis F
April 27, 2016

I have not used it much but from what I see it is very effective.

Gordon Z
September 28, 2020

Product performed as expected & received in good condition. The only thing I would suggest, is if a product is not stocked or out of stock & has to be brought in from a supplier, informing the customer of a delivery date should be done, I had to telephone to find out the date the expected delivery to your warehouse was.

Bob D
July 24, 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: How many square feet will a gallon of the Alumiprep cover?

Generally, a gallon of Alumiprep will cover an estimated 450 square feet.

Q: Is there a tech process bulletin available for Alumiprep No. 33?

The technical process bulletin for Alumiprep 33 is part # 09-00679. It is free of charge and can be found in the "Accessories" tab on this web page.

Q: What is the useful shelf life of Bondrite C-IC 33 AERO (formerly Alumiprep 33)?

This product has a twelve month shelf life from the day the container is opened, but no longer than 24 months from the date of manufacture total.

Q: Can this product be used to spot treat corrosion on a painted aircraft without disturbing the nearby paint?

The material is recommended to be used on bare aluminum. Test panels would need to be done to see if it would disturb the type of paint on your project.

Q: How long after rinsing do you have to prime parts?

As soon as the metal is fully dry and free of moisture you can apply primer.

Q: What is the shelf life of the BONDERITE C-IC 33 AERO - FORMERLY ALUMIPREP 33?

This product has a twelve month shelf life from the day the container is opened, but no longer than 24 months from the date of manufacture total

Q: Will Alumaprep damage existing anodize?

The answer is yes. This is phosphoric acid and of you applied to an anodized surface, yes, there is a major risk of damaging the anodized surface.

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