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 |
Superior SL7401-Sc Ring Set Single Cylinder
we have been using them for decades with no problems.
These look just like the ones on my engine. The last time I needed these, it was a pain waiting to get them. These are inexpensive enough to have some on hand just in case
Superior SL7401-Sc Ring Set Single Cylinder
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No. They are sold individually, for 4 quantity 4 needs to be ordered.