Part# 08-11934
MFR Model# SL74241A


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: 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.

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we have been using them for decades with no problems.

Darryl F
March 26, 2021

The pin (& caps) were a perfect fit and came packaged with a light coating of wax and wrapped in wax paper it was completely protected from the elements!

Paul A
January 25, 2021

SUPER fast delivery, Superior quality. I give number one.

Ales B
January 5, 2021

Well packed, exactly what I asked for, high quality parts, very nice looking. They arrived rapidly as expected.

Kevin F
April 23, 2020

no problems OEM quality

Roger P
April 23, 2020

Parts arrived on time and with no damage. Aircraft Spruce is awesome !! Thanks, Matt

December 6, 2019

Intake gasket SL71973 a good replacement for Lycoming gasket 71973, my mechanic and IA recommended it. The gaskets are working for me. A one time use gasket.

David P
October 8, 2019

My first cylinder install and went very well, though, I recommend buying new nuts along with the cylinder purchase. Difficulty installing rocker arms transferred over from old piston, but prevailed. Insure you have Manufacturers Overhaul manual in your mind before doing and have available.

Chinookflight L
October 9, 2018

This item looks es expected, nothing specil to coment

Pilatus A
March 6, 2017

We were sent the wrong rings. Gave the model number of the engine and what material the cyl was made of. They told us what rings we needed.

August 14, 2020


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: Does Millennium cylinder assembly SL36006W-A20P, your part number 08-11749, come with the piston and ring?

Yes, this assembly comes with the piston and ring.

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