What are the 3 rings on a piston?

The Perkins piston rings are composed of three rings. They are the upper compression ring, then the central compression ring and finally the oil control ring. These parts are relatively small in size, but play an important role in the main cylinder block of your engine.


Link copied to

Get Virtual or In-Home Service

  1. Free expert virtual diagnosis

  2. $50 for a remote fix. No fix? No charge.

  3. Get a pro to help in person