The Sinister Diesel coolant reservoir degas bottle cap in blue fits 1994+ Ford Powerstroke diesel applications and replaces the factory cap on the coolant reservoir. Offered as an engine-bay appearance and replacement item, it provides a direct-fit option for Powerstroke owners seeking a color-matched cap for the degas bottle in their engine bay.
Sinister Diesel 1994+ Ford Powerstroke Coolant Reservoir Degas Bottle Cap - Blue