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The Sinister Diesel coolant reservoir degas bottle cap for 2017–2019 Ford Powerstroke applications provides a direct-fit replacement in blue. It restores proper sealing and pressure control at the coolant neck while adding a visible engine-bay accent. Use it when replacing a worn or cracked cap to maintain coolant system integrity and help prevent leaks during normal operation.
Sinister Diesel 17-19 Ford Powerstroke Coolant Reservoir Degas Bottle Cap - Blue
