Part# 08-10871
MFR Model# MS9018-05/2-52
Vendor Part NumberQuantity NeededDescriptionPart Number
MS9018-05/2-52 + 2Helicoil08-10871


Uniform hardness all the way through the steel barrel walls which allows the barrel to provide even wear while withstanding extreme cylinder temperatures and pressures.

Exhaust and intake ports are volumetrically matched to maximum output and performance.

Increased port wall thickness - eliminates problems with warping and cracking.

Computer-generated head fin configuration - deliver more uniform heat transfer and fewer "hot" spots.

Manufactured from the most advanced alloys available - exceed industry standard for strength and porosity.

+ Included with stud assembly.
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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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

very helpful staff

Todd S
August 3, 2020

Part arrived on time, and was packaged very well.

Buell P
April 29, 2020

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

they are all flat and round lol

Dwain H
March 7, 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

Exactly what I ordered. Quick delivery.

Mel N
August 14, 2019


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.

Q: What material is this Superior air parts SL75906 Lycoming rocker box gasket made of Cork or Silicone? I need silicone type. What part no. for order?

It is cork. We have them in silicone, part number 08-01314.