Motorad Engine Coolant Reservoir Cap,Radiator Cap P/N:ST13R
Hold the correct pressure in your truck's cooling system with the Motorad Coolant Reservoir Cap (T5R). This steel pressure cap seals the coolant reservoir and, through its built-in relief and vacuum valves, helps maintain proper cooling-system pressure so the coolant's boiling point stays raised and coolant can return as the system cools. It fits many vehicles, among them the 2017-2021 Ford F-350 Super Duty, 2011-2015 Ford F-450 Super Duty and 2011-2015 Ford F-550 Super Duty — see the "Vehicles it fits" section for the full list.
If a cap that no longer holds pressure or fails to seal is the cause of coolant loss, overheating, or a low-coolant warning, the T5R replaces it with a cap designed to seal and regulate pressure.
Interchange: 703-5619
7035619 · BC3Z8100A · BC3Z8100B · 10268 · 7505 · 9T5R
This part cross-references / interchanges with the following part numbers:
What does this cap do?
It seals the coolant reservoir and, through its relief and vacuum valves, helps maintain proper cooling-system pressure so coolant can expand and return as the system heats and cools.
Will the T5R fit my truck?
It's a direct-fit replacement for the listed applications, among them the 2017-2021 Ford F-350 Super Duty, 2011-2015 Ford F-450 Super Duty and 2011-2015 Ford F-550 Super Duty. Check the "Vehicles it fits" section for your exact vehicle.
Is this an engine coolant reservoir cap?
Yes. It is cataloged under that name and may also appear as a radiator cap for the same component.
What is the cap made of?
It is a steel cap built to OE specifications and 100% tested for proper pressure operation.
What are signs the cap may need replacing?
Coolant loss, overheating, or a low-coolant warning can indicate a cap that no longer holds pressure. Diagnose the cause first, since these symptoms have other possible sources.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.