Ford Transit Mk7 Engine Oil Filler Cap Cover Screw 2503811 YS4G-6766-HA

Ford Transit Mk7 Engine Oil Filler Cap Cover Screw is a component from the Oil drain and filler caps and dipsticks group, designed to tightly seal the oil filler opening in the power unit. A properly selected cap ensures stable pressure in the lubrication system, limits oil evaporation, and protects the engine against the ingress of external contaminants. This is a practical service solution for Ford users looking for a proven, original used component.

Specifications and technical data

• SKU: 2503811
• Mark: Ford
• Condition: Used
• OEM Part Number: 2503811
• Substitutable numbers: 2503811, YS4G-6766-HA, YS4G6766HA
• Part type: Oil Filler Cap
• Category: Oil Drain Plugs, Filler Caps & Dipsticks

Purpose and function of the oil filler cap

Ford Transit Mk7 Engine Oil Filler Cap Cover Screw is responsible for securely closing the oil filler neck in the valve cover or engine housing. A correctly selected cap:

• prevents oil leaks during engine operation,
• limits the ingress of dust, moisture, and other contaminants into the engine,
• supports the maintenance of stable operating conditions for the lubrication system,
• minimizes the risk of engine bay contamination with oil.

For intensively used commercial vehicles, such as the Transit, a functional oil filler cap is an essential element of preventive maintenance.

Benefits of using an original Ford component

The original cap from the Oil drain and filler caps and dipsticks group ensures a perfect fit for the factory Ford engine cover without the need for modifications. As a result:

• the thread and diameter comply with the manufacturer's factory requirements,
• the seal operates within the range intended by the designers,
• installation and removal during oil service are quick and repeatable,
• compatibility with original engine accessory components is maintained.

A used, original component helps maintain the structural integrity of the power unit, which is particularly important in vehicles operating daily in fleet or delivery conditions.

Installation and operational characteristics

The oil filler cap from this part group is designed as a service element that the user or mechanic can remove by hand during an oil change or lubrication check. In practice, this means:

• intuitive installation in place of the factory cap,
• the ability to unscrew and tighten repeatedly without specialized tools,
• stable positioning after tightening, without play or uncontrolled rotation,
• easy verification of correct seating after every oil service.

Choosing a cap that meets the manufacturer's requirements reduces the risk of leaks that could lead to engine bay contamination or a drop in oil levels between service intervals.

Importance of lubrication system tightness

A functional oil filler cap has a direct impact on engine operating conditions. Maintaining the proper level and cleanliness of the oil supports the durability of the bearings, camshaft, and other components working under friction. Combined with regular oil and filter changes, a properly functioning cap:

• helps reduce engine wear,
• supports stable engine operation across the full load range,
• reduces the risk of failures resulting from insufficient lubrication.

For commercial vehicle users, where downtime generates real costs, maintaining the tightness of the lubrication system is a key element of operational management.

Service expansion within Ford caps and dipsticks

If you are planning a comprehensive repair or upgrade of the engine area in your Ford and need other elements from the same group, such as oil drain plugs, filler caps, or dipsticks, check the available parts in the Ford oil drain and filler caps and dipsticks category.

Technical support and engine operation

When performing oil-related work, it is also worth paying attention to the general condition of the power unit and its operating temperature. Engine overheating accelerates oil degradation, which may require more frequent checks of the oil level and condition. To better understand the relationship between operating temperature and unit durability, the following article will be helpful: Engine cooling system – overheating, repair, and used radiators.