Part# 08-10908-4
MFR Model# SA10200-A20P 4 KT


NOTE: These are swaged type cylinders, if you need removable push rods please order part # 07-12522.

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.

Note: Item does not include piston pin or rocker arms.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


Engine Configurations
C125 -2
C145 -2, -2H
O-200 -A, -B
O-300 -A, -B,C, -D


Parts per Assembly

  • 1 - Guide, NI-Resist (SA10205)
  • 1 - Guide, Int. (SA10209)
  • 1 - Insert, Exh. (SA2106)
  • 1 - Seat, Int. (SA641793)
  • 2 - Helicoil (MS9018-05/2-52)
  • 2 - Housing, Push Rod (SA21284)
  • 4 - Bushing, Rocker Shaft (SA22949 M05)
  • 2 - Stud (SA401870)
  • 2 - Stud (SA402151)
  • 1 - Plug (MS20913-1)
  • 1 - Cylinder Stud (SA10200-A1)
  • 1 - Cover, Valve (SA40762)
  • 1 - Valve, Exh. (SA10204)
  • 4 - Lock (SA21361)
  • 1 - Retainer (SA24026)
  • 2 - Spring (SA24031)
  • 1 - Retainer, Valve Spring (SA24044)
  • 2 - Spring, Valve (SA625957)
  • 2 - Spring (SA625958)
  • 2 - Seat, Valve Spring (SA625961)
  • 1 - Valve, Int. (SA641792)
  • 1 - Shaft, Rocker Valve (SA21153)
  • 1 - Piston (SA530348)
  • 1 - Seal (21477)
  • 1 - Gasket (SA22250)
  • 1 - Gasket (SA530162)
  • 2 - Connector Push Rod (SA539840)
  • 2 - Gasket (SA632837)
  • 1 - Gasket (SA530928)
  • 1 - Ring (SA2000)
  • 2 - Ring (SA1000)
  • 1 - Ring (SA10206)
  • Frequently Purchased With
  • Customers Also Viewed


High quality product. Looks like a new engine and runs great.

Neil P Verified Purchase


March 19, 2023

I ordered a Millenium cylinder for 0300D Continental engine. I was very satisified I got them in such a short time. I am happy. Thank you.

Dennis N
May 7, 2021

arrived in good condition

Richard Y
January 25, 2021

Installed on a Cessna 150 with the 0-200 engine. So far no problems with a little over 3 hours flight time on new cylinder.

July 2, 2020

We are in the process of restoring a 1962 Cessna 172C. The O300 power plant runs well but is getting tired. We used Superior Millenium cylinders for the top overhaul. The quality and workmanship is exceptional. Very pleased with the purchase.

Matthew W
March 7, 2020

First cylinder I have every purchased. Glad I didnt go rebuilt. These are very well made. Complete less rockers and piston pin.

Tom W
September 18, 2019

I have used these cyl.s before and found them to be very well constructed. Quick delivery

Larry S
October 26, 2018

Jake S
August 8, 2018

High quality, all new parts, at a price not much more than rebuilt, fast delivery, this purchase is a no-brainer.

Fred G
March 18, 2018

I’ve always read that millenium Cylinders were the best. Just put 4 on my c-85 and one of them had a stuck valve from an incorrectly sized valve guide. It’s been 2 weeks of trying to get a new cylinder from Millenium because they refused to allow an exchange with spruce and they still have not even mailed the cylinder. Multiple messages have been left and they don’t even return the call. They may be good cylinder but good luck if you have any problems with them!!!

November 18, 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: What are the differences between SA10200-A20P, -A21P, and -A22P?

The difference is in the engine application:

  • SA10200-A20P is for Continental O-200-A, B; C-125-2, C-145-2, -2H; O-300A, B, C, D
  • SA10200-A21P is for Continental C-75, 85
  • SA10200-A22P is for Continental C-90

Q: Is this Superior Millennium Cylinder SA10200-A20P with valve complete with the piston and piston rings?

Yes, the product listed on this page is a complete, assembled cylinder. It will come with the piston and ring.

Q: The picture doesn't show push rod shroud tubes. Do they not come with those installed?

Yes, it does come with the shroud tubes installed.

Q: What is the weight of the Superior Millennium Cylinder SA10200-A20P kit?

These are approximately 35 lbs.

Q: Is there a gasket kit included with the Superior cylinder SA10200-A20P?

Yes. It comes with the complete gasket set to replace all gaskets / seals during removal / replacement.

Q: Does this Superior cylinder come with a wrist pin? If not, what is the part number?

This cylinder does not come with a piston pin. The part number for the pin is 08-11143.

Q: Does the SA10200-A20P come with pushrods and valve covers?

Yes, it will come with a valve cover, push rod housing and push rod connector.

Q: Does the Superior Millenium Cylinders SA10200-A20P ring need to be set or are they ready to go?

We do not install the ring sets in the cylinders when we ship them. The rings will have to be gapped in accordance with Superior Air Parts Service Letter L05-09.

Q: Is the Millennium cylinder identical to the original Continental cylinder? I need to replace just one cylinder, is that OK to do?

Yes, the application is exactly the same. They are manufactured two different places, but the fit and form is the same. Yes, you can just replace one cylinder, although it is common when replacing one to replace the entire set.

Q: Can these be retrofit with the Real Gaskets pushrod tube mod?

Yes, they will work.