Sinister Diesel 2017-Current 6.7L Powerstroke, Coolant Reservoir (Degas) Cap – SD-DC-6.7P-17


Product Highlights:

This new Coolant Reservoir (Degas) Cap functions like a factory cap, but features custom Sinister Diesel looks. The cap fits Sinister Coolant Reservoirs for 2017-Current Powerstroke engines. It is made from CNC machined, solid billet T6-6061 aluminum with an interior pressure relief system, so it will continue to function even in case of a gasket failure. Available in gray or Sinister Blue, this cap looks as good as it works!

Vehicle Fitment

2017-Current Ford Powerstroke 6.7L

Key Features

  • Available in Anodized Sinister Blue or Gray
  • CNC Machined from T6-6061 Billet Aluminum
  • Etched Sinister Diesel Logo
  • Replacement for failure-prone factory cap
  • Fits 2017-Current Powerstroke Coolant Reservoir (Degas) Cap
  • Lifetime Sinister Diesel Warranty
  • Rated at 21psi


  • (1) Sinister Diesel Coolant Reservoir (Degas) Cap

*Special Order. Please allow for additional shipping time.