(4) Textron Lycoming aircraft engine pistons,  8:5 high compression ratio.

Part nunber 75089, alternate 14D23912. 

The pistons are approved for Lycoming aircraft engine 320, 360 and 540 series.  

Could be used on airboat, homebuilt, experimental engines.

Please review your parts manual for specific application. 

The listing is for all four pistons as pictured.

 email if you have questions or need additional pictures.