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Home / Engine Parts / Exhaust Components / Studs /CAD Plated Steel Exhaust Studs For Lycoming Engines - 31C12
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CAD Plated Steel Exhaust Studs For Lycoming Engines - 31C12

11 Reviews 2 Answered Questions
$9.50/Piece
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Part# 08-06279
MFR Model# 31C-12

Overview

These high quality exhaust studs are produced from cad plated steel in 5/16 x 18 standard thread size and length is 1.5" and are a direct replacement for the Lycoming part number 31C12 stud. These studs DO NOT feature a safety wire hole (refer to p/n 08-06780 for safety wire hole feature). FAA approved for all Lycoming engines from 0-235 through 0-540.
   
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Reviews

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Perfect fit for my Lyc io-320

Bob R Verified Purchase

Lycoming Stud 31C-12
November 30, 2023

White B Verified Purchase

Lycoming Stud 31C-12
November 10, 2023

David K Verified Purchase

Lycoming Stud 31C-12
June 9, 2023

Pw S Verified Purchase

Lycoming Stud 31C-12
February 16, 2023

What a stud

Mike H Verified Purchase

Lycoming Stud 31C-12
April 8, 2022

Just what I needed and received it earlier than expected. Thanks

Fred B Verified Purchase

Lycoming Stud 31C-12
March 8, 2022

Mark B Verified Purchase

Lycoming Stud 31C-12
October 16, 2021

Great quality.

Robert K Verified Purchase

Lycoming Stud 31C-12
May 28, 2021

No question on the high quality of this stud. Although when I installed, some studs were too short to install washers. I wish they offered a stud 0.24 longer.

Tyler D
October 26, 2020

These bolts had a different thread pitch on each side. One as advertised and called out in the parts manual for the part number and the other side was completely different. Unusable for my alternator installation in lycoming O320 e2a.

Charles Verified Purchase

Lycoming Stud 31C-12
August 22, 2023

Q&A

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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 is the weight of this STUD with PN: 31C-12?

Approx 0.26 lbs.

Q: Are these studs standard 18 thread on both ends?

Yes, 5/16-18 on both ends.

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