Ford Transit Custom Water Coolant Reservoir Bottle Cover Cap DG93-8101-AA

Ford Transit Custom Water Coolant Reservoir Bottle Cover Cap is an original cooling system component from the Expansion tanks group, designed for use in Ford vehicles. It ensures a tight seal for the reservoir, pressure stabilization, and safe operation of the cooling system under demanding operating conditions. This is a practical service solution for users who want to maintain factory engine performance parameters.

Specifications and technical data

• SKU: DG938101AA
• Mark: Ford
• Condition: Used
• OEM Part Number: DG938101AA
• Substitutable numbers: DG938101AA, DG93 8101 AA, DG93-8101-AA, 302320494, 302 320 494
• Category: Expansion & Overflow Tanks

Purpose and function in the cooling system

The coolant reservoir cap in the Ford Transit Custom is responsible for controlling pressure in the cooling system and maintaining the proper tightness of the entire circuit. A correctly selected component of this type:

• prevents uncontrolled coolant loss,
• stabilizes engine operating conditions under variable loads,
• reduces the risk of engine overheating,
• supports uniform coolant circulation throughout the system.

Thanks to the use of an original Ford line solution, the cap works with the factory expansion tank and other cooling system components without the need for modifications.

Technical characteristics and fitment

The presented cap has been designed as a component compatible with the factory coolant expansion tank in the Ford Transit Custom. The properly selected seal geometry and thread design allow for secure seating on the reservoir and repeatable tightening during service procedures.

Its original Ford origin helps maintain compliance with the operating pressure parameters specified by the vehicle manufacturer. The product has an assigned OEM part number and associated interchangeable numbers, which facilitates compatibility verification via VIN or catalog number in professional parts catalogs.

Component condition and service application

The coolant reservoir cap is offered as a used part, making it a cost-effective solution for budget repairs or replacing a damaged component in a Ford Transit Custom. This type of component is particularly useful in situations where the existing cap shows signs of wear, such as leaks, problems with maintaining pressure, or visible mechanical damage.

Replacing the cap is one of the simpler service tasks in the cooling system area, and using an original component allows for reducing the risk of mismatch, which is typical for aftermarket parts of uncertain origin.

Benefits of using an original Ford cap

Using an original reservoir cap in a Ford Transit Custom brings a number of practical benefits:

• Compatibility with the factory cooling system – fitment to the original reservoir and the operating parameters specified by the manufacturer.
• Stable thermal conditions – proper pressure maintenance in the system promotes uniform engine cooling.
• Hassle-free installation – no need for modifications or the use of additional adapters.
• Possibility of verification by OEM number and interchangeable numbers – facilitates the selection of the correct component for a specific vehicle version.

For workshops and individual users, this means predictable cooling system behavior and a reduction in the risk of failure resulting from the use of an inappropriate component.

Part selection by OEM number and technical support

When selecting cooling system components, such as a reservoir cap, it is crucial to use the OEM part number and associated interchangeable numbers. This allows for precise matching of the component to a specific engine version and vehicle model year, which has a direct impact on operational reliability.

If you are interested in a broader context of selecting original parts by catalog number, methods of verification by VIN, and practical tips regarding engine operation, it is worth reading the article: Audi five-cylinder engine – legend and selection of used OEM parts. The information contained therein helps to understand how important proper component identification is in modern vehicles.

Related Ford cooling system components

If you are planning a comprehensive repair or upgrade of the cooling system area in your Ford and need other elements from the same group, such as expansion tanks, caps, or related mounting elements, check the available parts in the Ford expansion tanks category.