Fits: 2007.5-2021 Dodge 6.7L Cummins (Equipped with 68RFE Transmission)The Sun Coast Billet Snap Ring Retainer can help stop catastrophic damage in the Transmission in your 2007.5-2021 Dodge 6.7L Cummins. It is not uncommon find the under drive balance piston snap ring blown off inside the 68RF..