Mercedes W204 Engine Oil Filler Cap Cover A0000101485

Mercedes W204 Engine Oil Filler Cap Cover is an original component from the Fuel filler flaps and caps group, designed for use in Mercedes vehicles. It ensures a tight seal of the oil filler, stabilizes the lubrication system operation, and reduces the risk of leaks and contaminants entering the engine.

Specifications and technical data

• SKU: A0000101485
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0000101485
• Substitutable numbers: A0000101485, A 000 010 14 85
• Category: Fuel Tank Caps

Purpose and technical function

Mercedes W204 Engine Oil Filler Cap Cover is a service component responsible for securely closing the oil filler neck in the engine unit. A properly selected cap stabilizes the pressure in the upper part of the engine, limits oil evaporation, and protects against the ingress of dust, moisture, and other contaminants into the lubrication system.

The original Mercedes origin ensures the maintenance of the correct sealing geometry, appropriate material hardness, and compatibility with the thread and seat in the valve cover. As a result, the cap works in accordance with factory engine tolerances, which is essential for long-term operation.

Construction and fitment to the lubrication system

The oil filler cap from this reference has been designed as a component mounted directly into the filler seat, using the factory mounting system. The design provides:

• a precisely shaped sealing surface,
• a stable grip for easy tightening and loosening,
• a properly selected material resistant to temperature and contact with engine oil.

This solution ensures a repeatable, tight closure after every service, which translates into trouble-free operation of the lubrication system.

Condition and service application

The item is offered in used condition, which allows for an economical replacement of a damaged or missing cap while maintaining the manufacturer's original specifications. This is a practical solution in situations where the existing cap has cracked, the seal has worn out, or it was lost during an oil service.

Replacing the cap is a low-complexity service task, possible to perform both in a professional workshop and at home, provided that basic cleanliness rules are maintained around the oil filler area.

Benefits of using an original Mercedes cap

Using an original oil filler cap in a Mercedes W204 provides a number of practical benefits:

• maintaining the factory tightness of the lubrication system,
• reducing the risk of engine bay contamination from leaking oil,
• maintaining compliance with the vehicle manufacturer's requirements,
• visual consistency of the engine bay with other OEM components.

For users who value technically correct and factory-compliant solutions, the original oil filler cap is a reasonable alternative to replacements with uncertain parameters.

If you are planning a comprehensive repair or upgrade of the fuel and lubrication system area in your Mercedes and need other components from the same group, such as filler caps, protective flaps, or additional closing elements, check the available parts in the Mercedes fuel filler flaps and caps category.

Technical support and service knowledge

When selecting components related to the fuel and lubrication system, it is worth using reliable sources of knowledge. Practical information on diagnostics, selection by factory numbers, and operating principles can be found in the article "Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration", which organizes key service issues.

If you are interested in a broader context of using used components in premium class cars, it is also worth reading the market analysis in the material on the growing popularity of used originals for brands such as Mercedes, where technical and economic arguments for such a choice are discussed.