SUPERIOR SL-STD-2209 SCREW, 5/16 - 24 X 1.75

Part# 08-12038
MFR Model# SL-STD-2209
Vendor Part NumberQuantity NeededDescriptionPart Number
SL-STD-22091Crankshaft Gear Bolt 08-12038


Lycoming engines are the culmination of hundreds of parts improvements made over the last six decades.

In Accordance with Textron-Lycoming Mandatory Service Bulletin 240R
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -

  • Frequently Purchased With
  • Customers Also Viewed


Good Quality

Guy F Verified Purchase

SUPERIOR SL-STD-2209 SCREW, 5/16 - 24 X 1.75

October 20, 2023

Product as advertised.

David M
January 11, 2021

as described

Mark M
April 23, 2020

What I ordered and on time!

April 9, 2020

What an you say about flat washers? They are flat, round and the correct diameter. Thanks.

Julicher A
January 28, 2020

Great Product

John D
November 21, 2019

What expected

August 24, 2019

especially like the e mail reciept

David W
August 30, 2018

Great parts and great price Ive been using Superior for years and have no problem using them as replacement for OEM

William B
April 20, 2018

Perfect and the best price I can find

William B
April 20, 2018


Please note,'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. 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.