This Coolant Reservoir (Degas) Cap from Sinister Diesel is made to replace the factory cap on 2020 and later Ford Powerstroke 6.7L coolant reservoirs. It restores the reservoir seal and pressure control function while providing a finished appearance in place of the OEM cap, offered as a single direct-replacement unit for affected Powerstroke models.
Sinister Diesel 20+ Ford Powerstroke 6.7L Coolant Reservoir (Degas) Cap