Oil Dipstick Mercedes W204 C207 W212 C320 CDI Engine Guide Tube Pipe A6420101166

Oil Dipstick Mercedes W204 C207 W212 C320 CDI Engine Guide Tube Pipe is an original lubrication system component designed for Diesel engines of this series. The precisely guided tube ensures proper seating of the dipstick, thereby providing a reliable oil level reading, which has a direct impact on engine safety and durability. This is a practical solution for users who want to restore the factory functionality of the lubrication system in their Mercedes.

Specifications and technical data

• SKU: A6420101166-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420101166
• Substitutable numbers: A6420101166, A 642 010 11 66, A 642 010 10 66, A6420101066
• Fuel type: Diesel
• Category: Oil Drain Plugs, Filler Caps & Dipsticks

Purpose and function in the lubrication system

The oil dipstick tube in a diesel engine is responsible for the stable guidance of the oil level indicator and for sealing it as it exits the engine block. In Mercedes W204, C207, W212, and C320 CDI models, this component works with the factory dipstick, enabling:

• accurate measurement of the engine's operating oil level,
• easy, repeatable oil level checks during vehicle operation,
• maintenance of the correct dipstick guidance geometry relative to the oil pan.

This allows the driver to monitor the lubrication status on an ongoing basis, which is particularly important in modern diesel units that are sensitive to oil shortages.

Benefits of using an original dipstick tube

Using a dedicated dipstick tube in a Mercedes with a diesel engine helps avoid problems typical of aftermarket replacements with imprecise dimensions. The most important advantages include:

• Secure fit to the engine block – correct positioning relative to oil channels and the oil pan.
• Stable dipstick guidance – no risk of jamming, reading errors, or rubbing against internal components.
• Maintenance of the factory lubrication system geometry – important for service and diagnostics.
• Trouble-free oil level checking even during frequent inspections.

By choosing this component, you restore the lubrication system to the configuration intended by the manufacturer, which promotes stable engine operation.

Product characteristics and condition

The engine oil dipstick tube offered in this listing comes from a Mercedes vehicle and is classified in the Oil drain and filler plugs and dipsticks group. The product is used, which means it may show signs of previous use, but it retains the functionality necessary for continued use in a vehicle.

For owners of models with diesel engines, this is a practical service solution, allowing for an economical replacement of a damaged or missing tube while maintaining the original design of the lubrication system.

Selection and vehicle compatibility

To correctly select the dipstick tube for a specific car, it is worth paying attention to:

• body model (W204, C207, W212, C320 CDI),
• engine type – in this case Diesel,
• compatibility with the factory lubrication system of the given engine.

The component has an assigned OEM part number and corresponding interchangeable numbers, which facilitates compatibility verification in service catalogs and parts selection systems. Additionally, in our database, the product is marked with an SKU identifier, which allows for quick searching in the store's offer.

Related components and service knowledge

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 oil drain plugs, oil filler caps, or measuring dipsticks, check the available parts in the Oil drain and filler plugs and dipsticks Mercedes category.

When working on the lubrication system and engine operating temperatures, it is also worth ensuring the efficiency of the cooling system. Practical tips regarding the impact of the oil cooler and cooling system on engine longevity can be found in the article: Engine cooling system – overheating, repair, and used radiators.