Part# 09-02992-12
MFR Model# 20012


Corrosion Block is a clean fluid that actively protects metal using advanced polar bonding chemistry. Synthetic additives in Corrosion Block completely penetrate corrosion cells…replacing the salt water which is then allowed to evaporate. Corrosion Block’s hydrophobic film remains to further protect the metal acting like an “OFF SWITCH” for corrosion.

Corrosion Block’s unique properties work especially well on all electrical components including the LED lighting, and GPS systems found in today’s trucks. Treating wire harnesses, connectors, battery posts, and other components a few times a year will prevent costly down time…increasing productivity and profitability. Other proven applications for Corrosion Block include tank straps, and aluminum wheel and hubs.
California Prop 65 Warning Symbol

WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.


  • Prevents galvanic corrosion/ all metals
  • Protects electronic components
  • Moisture proofs battery connections
  • Fast acting penatrant/lubricating
  • Non-Toxic Non-Flammable


Have been using this product for years. Works on almost any project that needs a lot of protection. I dont use anything else

John M
May 10, 2021

I use it in my fishing reels for the gears for saltwater reels and it good

October 6, 2020

This is an amazing product, I have used it for years to protect boat electronics and loosening corroded screws and bolts. This was also the best price on the internet.

Pat C
August 24, 2020

This thing really works. After using it in the airplanes, I took it home to spray in our enclosed trailers hinges. It is used as storage and the hinges were rusted, causing the tail gate and side door to be hard to open. After soaking them with Corrosion Block, they free up and there is no resistance anymore. I couldnt believe it. I have never had the opportunity to appreciate this product full capabilities because any airplane parts would have been replaced long before getting any closer to the shape of those hinges. BTW, for years I have been spraying those hinges with WD-40 and LPS. So, they havent been neglected at all. After heavy corrosion sets in, neither WD-40 nor LPS cant address the issue anymore.

98x, L
April 25, 2020

Delivered fast

September 19, 2019

Shipped fast.

August 11, 2019

Been using acf50 and corrosion block for many years now,,dont use anything else,it is the best product out there!! Penetrant,protectant,,used on plane and motorcycles,industrial applications Randy Oregon

Randy E
January 17, 2019

Great product. Excellent price!

Paul H
February 19, 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: Which is the best application system for this Corrosion Block?

ACF-50 has applicators to use with their products. We have added them as "Accessories" to this webpage.

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