Upgrade your transmission maintenance with DAMYPRD's premium O-ring kit specifically engineered for Dodge Ram diesel trucks. This complete seal set features industrial-grade nitrile rubber that outperforms standard materials, providing exceptional resistance to transmission fluid degradation and high-pressure conditions. Each component is CNC-machined to match exact OEM dimensions, ensuring leak-free performance in 68RFE transmission systems. The kit includes 6 critical seals for cooler line connections, pre-lubricated for effortless installation. Whether you're repairing a leak or performing preventive maintenance, this set delivers factory-grade reliability for your 6.7L Cummins-powered Ram 2500/3500. All parts undergo rigorous pressure testing (up to 300 PSI) and thermal cycling validation (-40°F to 300°F) to guarantee durability in extreme operating conditions.