Valve Seal Set Viton Dodge Gen-3 Hemi 09-21

The Valve Seal Set Viton Dodge Gen-3 Hemi 09-21 from COMP CAMS is engineered for serious Hemi engine builders and performance enthusiasts who demand reliability in high-output applications. Valve seals are critical components that prevent oil from leaking past the valve stems into the combustion chamber—a common wear issue on performance engines subjected to aggressive cam profiles, high RPM operation, and extended track or street use. This COMP CAMS set delivers OEM-quality sealing specifically calibrated for the Gen-3 Hemi platform's valve geometry and thermal demands.

Manufactured from Viton fluoroelastomer, these seals resist degradation from elevated temperatures, aggressive oil additives, and the extreme thermal cycling that occurs during sustained high-RPM operation. Viton's chemical resistance and durability significantly outperform standard Nitrile compounds, making it the go-to material for forced-induction builds, nitrous applications, and extreme street engines. The valve seal set ensures a precise fit on the valve stems of your Hemi cylinder head, maintaining consistent oil control across the full RPM range and reducing blow-by gases that compromise engine efficiency and longevity.

This set is engineered for 2009–2021 Dodge Gen-3 Hemi engines, including all displacement variants and OHV configurations used in trucks, Challengers, Chargers, and performance crate builds. Installation requires valve spring removal and stem preparation as part of a full cylinder head assembly or rebuild—a task best suited for experienced builders or professional machine shops with press equipment. Whether you're refreshing seals on a tired performance engine or building a fresh Hemi from the ground up, COMP CAMS valve seals deliver the reliability and thermal stability needed to keep oil consumption low and engine longevity high.