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!
- 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