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The Sinister Diesel Coolant Reservoir (Degas) Cap is a direct-replacement cap for 2013–2019 Dodge Ram 2500/3500 trucks with the 6.7L Cummins. It matches factory function while adding Sinister styling and an interior pressure relief system. CNC-machined from T6-6061 billet aluminum, the cap is rated for 21 PSI and is offered in gray or Sinister Blue as a durable, attractive upgrade.
Sinister Diesel 13-19 Cummins 6.7L Coolant Reservoir (Degas) Cap
