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AN4062-1 Dehydrator Plugs 18MM

$16.75/Each
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Part# AN4062-1
MFR Model# MS27215-2

Overview

These plugs are used to prevent rust and corrosion in engines while in storage. Contain silica gel which turns from blue to pink when moisture is absorbed. Reusable and refillable. The pink silica gel may be reactivated (after removing from reservoir) by heating for 16 hours at 250F.

DISCOUNT: LESS 10% ON 25, 15% ON 50, 20% ON 100.

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Reviews

Great indicator for engine preservation as well as easy to change out with dried desiccant. Wish they sold replacement rubber gaskets for them.

Dennis O Verified Purchase

DEHYDRATOR PLUG 18 MM AN4062-1

April 26, 2022

Have not installed yet

Russell W Verified Purchase

DEHYDRATOR PLUG 18 MM AN4062-1

February 15, 2022

I ordered these because they are rechargeable and my plane will be out of commission due to some damage. As others have said the threads are to big and you need to run them through a 8 x 1.5mm die to get them to screw in correctly.

Mike E Verified Purchase

DEHYDRATOR PLUG 18 MM AN4062-1

January 24, 2022

Looks like itll work just fine. Havent installed yet, so cant speak to the fit of the threads, but worse case I can just chase them with a die.

Martin D Verified Purchase

DEHYDRATOR PLUG 18 MM AN4062-1

December 22, 2021

Works as advertised. Install by hand with a sparkplug socket they do not break.

Bob M Verified Purchase

DEHYDRATOR PLUG 18 MM AN4062-1

December 11, 2021

The Dehydrator plugs perform as expected. Very good product.

Scott K
February 16, 2021

The ones I purchased many years ago are great. No problems screwing them in the spark plug holes. I dont know about the latest versions and the present day quality control. The main things Im disappointed with is, the lack of parts for them especially the rubber gaskets, as they dont seem to last especially when exposed to oil.

Bob
December 23, 2020

Just what I needed for the time between installing the exhaust on my experimental aircraft and first engine start. Gives some peace of mind as the clock ticks.

Mark E
February 28, 2019

John R
March 8, 2018

Used this dehydrator plug to replace the ones that came with the Tanis kit. Far superior quality, easy to refill dehydrator with fresh desiccant when needed. Definitely recommend this for engine preservation.

Dennis O
June 13, 2017

Q&A

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: Do the dehydrator plugs come with silica gel/desiccant or do you have to buy it separately?

The AN4062-1 Dehydrator plugs come with the silica gel / desiccant. It is sold separately in case customers need more gel but already have the plugs.

Q: What size are the threads for the dehydrator plugs?

The thread size is 18mm threads.

Q: Do you have 14 mm dehydrator plugs?

No. We do not stock 14MM dehydrator plugs, but if you let our sales staff know how many you need, we can try to special order them for you.

Q: Will I need 8 or is 4 sufficient?

It is our belief you would want one in every spark plug hole, but that would depend on the engine manual recommendations.

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