Looking for a top quality piston ring set that will help maintain factory performance in your 5.9 Cummins? Look no further than Clevite's S42170.020 Piston Ring Set! This set includes rings for a single cylinder and is made from OE quality materials, so you can rest assured it will meet or exceed your expectations. Plus, with a purchase of six sets you'll have everything you need to do a complete job. Order your Clevite S42170.020 Piston Ring Set today!