A 6.7 Cummins bored 0.020 inch over will not seal with standard rings. Clevite S42409.020 is the ring set in that inch oversize. It fits a 2013-2018 6.7.

• Type: Piston ring set in the 0.020 inch oversize. The Mahle size list says 0.020 inch oversize, not a millimeter oversize.
• Size: 0.020 inch oversize bore. Standard rings under S42409 will not fit this bore.
• Part number: Clevite S42409.020. OE numbers include 4309385 and 4309399.
• Fitment: 6.7 Cummins, 2013-2018.
• Does not fit: A standard bore, a 0.040 inch bore, or a 5.9 ring set. Confirm you have one set per piston you are ringing.
• Not in the box: The piston, pin, and bearings are not included.

Order today to secure your replacement. Measure the bore and confirm you need 0.020 inch oversize rings, not standard.