Mercedes W205 W213 Oil Filler Cap OM654 Oil Filler Cover Diesel A0000180200

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W205 W213 Oil Filler Cap OM654 Oil Filler Cover Diesel is an original lubrication system component designed for Mercedes diesel engines. This precisely manufactured cap ensures a tight seal of the oil filler, which reduces the risk of leaks and contamination in the engine compartment. By using a factory-original solution, you receive a part with reliable fitment, predictable durability, and compliance with the requirements of the OM654 unit.

Specifications and technical data

• SKU: A0000180200
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0000180200
• Substitutable numbers: A0000180200, A 000 018 02 00
• Fuel type: Diesel
• Category: Oil Drain Plugs, Filler Caps & Dipsticks

Purpose and function of the oil filler cap

The oil filler cap in a diesel engine plays a key role in maintaining the proper operating conditions of the power unit. It is responsible for:

• tightly sealing the oil filler opening in the engine cover,
• reducing oil evaporation and contamination in the engine compartment,
• maintaining stable pressure and cleanliness within the lubrication system,
• providing safe access to the filler during periodic oil changes.

In the case of modern diesel units, such as the OM654, using the correct cap is important for maintaining the proper operating parameters of the diesel engine and the convenience of service maintenance.

Compatibility with OM654 diesel engines

The presented cap has been designed for Mercedes diesel units, including the modern OM654 engine used in models such as the C-Class (W205) and E-Class (W213). This means:

• factory fitment to the oil filler socket in the valve cover,
• proper cooperation with the diesel engine lubrication system,
• preservation of original geometry and ergonomics during oil top-ups.

Thanks to this, the cap can be used both during standard service maintenance and during power unit repairs where compliance with Mercedes factory solutions is required.

Component characteristics and benefits of use

As a component from the Oil drain and filler caps and dipsticks group, this oil filler cap has been developed for stable operation in high-temperature conditions and contact with engine oil. Using an original solution ensures:

• secure seating in the filler socket without play or excessive seal wear,
• easy installation and removal during oil changes or top-ups,
• consistent engine compartment appearance with other OEM components,
• reduced risk of leaks typical of replacements with imprecise dimensions.

The product is offered as a used original component, which allows you to combine the benefits of factory fitment with an attractive price compared to new parts.

Practical application in service and operation

Replacing the oil filler cap is recommended, among other situations, when the existing component shows signs of mechanical damage, seal wear, or leaks. In service practice, this type of cap is used during:

• repairs of the OM654 unit after oil leaks in the upper part of the engine,
• comprehensive maintenance of the lubrication system in Mercedes diesel engines,
• restoring the original configuration after using unsuitable replacements.

By maintaining the factory design, the cap supports stable operation of the lubrication system, which is important for the durability of the diesel engine and the comfort of daily operation.

Lubrication system expansion and selection of related components

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

To better understand the impact of proper lubrication system maintenance and operating temperature on the service life of the power unit, it is worth reading the practical tips regarding engine cooling and protection described in the article Engine cooling system – overheating, repair, and used radiators.