Looking for a quality piston ring set for your 7.3 Powerstroke? Look no further than the Mahle S41768.020! These rings are .020 over and perfect for bore sizes of 4.13 inches. They're also super durable, with a thickness of 0.172 inches. Plus, they're sold individually, so you can get exactly the number of sets you need. Get your engine running like new again with the Mahle S41768.020 Piston Ring Set!