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CYLINDER BASE NUT WRENCHES 64942 / 64943

From $67.75 to $102.85
Description Part No. Price Buy
1/2" Allen Head Hex Wrench
Lycoming 64942
64942
$67.75
Quantity
3/8" Allen Head Hex Wrech
Lycoming 64943
64943
$67.75
Quantity
Cylinder Base Nut Wrenches Set
Lycoming 64942 & 64943
12-04722
$102.85
Quantity
Subtotal $0.00
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Overview

For lycoming engines
For socket type nuts (internal wrenching)
Standard 1/2" square female drive end
Made from alloy steel forgings, heat-treated for maximum toughness.

Reviews

I chose to backorder the wrenches, and Aircraft Spruce sent them as soon as they got some inventory. Very good quality wrenches. I bought these NEW from Aircraft Spruce for LESS than used ones selling on eBay. Thank you!

John B
January 6, 2018

Hello, this was an odd order to begin with. The wrenches were not in the US Inventory so had to be ordered from overseas. I waited around 2 1/2 months but Customer Service sent me updates to let me know changes to the est ship dates and when the Wrenches were actually on a ship headed my way and any other updates. I was impressed with this. When my wrench set finally arrived I discovered that the set contained 2 ea of the same wrench but one package had been misidentified, thus the reason for 4 stars. I do not believe this was the fault of AS&S but rather the supplier on the other end. As someone who worked Quality Control for many years, this one would have been tough to spot unless you were looking for it. Customer Service was notified and the proper wrench was sent out immediately. I am satisfied with my order however, this error did cost me some time in repackaging / shipping my return for the credit on the replacement wrench. I will use Aircraft Spruce & Specialty again for my Aviation supplies in the future.

Don S
February 24, 2021

Took a little while, only way to get a narrow deck cylinder with lycoming base nuts off. Quality seems good

Gary G
February 24, 2021

I purchased the two wrench set for a narrow deck O-320. Neither wrench have the clearance needed to engage the socket cylinder head bolts. They will have to be modified. Disappointed.

R H
May 16, 2019

Q&A

Q: What are the size of these 2 wrenches? (64942 & 64943)

The 64942 has a 1/2" allen head hex, and the 64943 has a 3/8" allen head hex.

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