Sinister Diesel Degas Bottle Cap (SDDC67P17) for 2017-2019 Powerstroke 6.7L

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The Sinister Diesel Coolant Reservoir Cap fits 2017-2019 Powerstroke engines and offers a custom design while functioning like a factory cap. Made from CNC-machined T6-6061 billet aluminum, it includes an interior pressure relief system for reliability. Available in gray or Sinister Blue, it combines durability with a stylish look.

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Description

This new Coolant Reservoir (Degas) Cap functions like a factory cap, but features custom Sinister Diesel looks. The cap fits Sinister Coolant Reservoirs for 2017-2019 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!

Additional information
Weight 1 lbs
Dimensions 5 × 5 × 5 in
Manufacturer

Fitment

Fitment

2019 Ford F-250 6.7L

2019 Ford F-350 6.7L

2018 Ford F-250 6.7L

2018 Ford F-350 6.7L

2017 Ford F-250 6.7L

2017 Ford F-350 6.7L

Features

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 2017-2019 Powerstroke Coolant Reservoir (Degas) Cap
  • Rated at 21psi
  • 1 Year Warranty
Includes

Includes

  • (1) Sinister Diesel Coolant Reservoir (Degas) Cap
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About brand
Sinister Diesel builds performance and reliability parts for diesel trucks. The company focuses on cooling, durability, and proper fitment. Sinister Diesel performance parts support daily driving, towing, and work use. Sinister designs cooling systems, charge pipes, and fuel system components. These parts help manage heat and reduce stress on the engine. Better cooling supports consistent performance under load. Truck owners trust the brand for dependable upgrades. These parts perform well in real-world driving conditions.
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