The MAHLE S41940 Piston Ring Set is a direct replacement for the compromised piston rings in your 2003-2007 Ford 6.0L PowerStroke. The Piston Ring Set is made from OE quality materials and maintains an OEM performance.
The "S" in the part number refers to "SINGLE" - if you need an entire SET - then we offer a set of 8 kits that is cheaper than buying 8 individuals.
