BMW E60 E61 LCI M5 E63 M6 Oil Filler Neck Cylinder Head 7834112

BMW E60 E61 LCI M5 E63 M6 Oil Filler Neck Cylinder Head is an original component from the Oil drain and filler caps and dipsticks group, designed for the lubrication system in BMW sports models. Thanks to its factory geometry, the filler neck ensures precise oil flow guidance and stable seating of the filler cap, which facilitates maintenance and reduces the risk of engine bay contamination. This is a practical solution for users who want to maintain the structural integrity of the powertrain and use parts that comply with BMW factory standards.

Specifications and technical data

• SKU: 7834112-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7834112
• Substitutable numbers: 11127834112, 7834112
• Part type: Oil Filler Cap
• Category: Oil Drain Plugs, Filler Caps & Dipsticks

Purpose and function of the oil filler neck

The presented filler neck is a component of the lubrication system, responsible for the safe and convenient refilling of engine oil. Its tasks include:

• guiding oil directly into the engine,
• providing a stable mounting point for the filler cap,
• reducing splashing and leaks during top-ups,
• maintaining a seal in the valve cover area.

Thanks to its fitment for specific generations of M5 and M6 models, the filler neck works with the factory lubrication system, which helps maintain the correct operating parameters of the powertrain.

Benefits of using an original BMW component

Using an original oil filler neck to replace a worn or damaged component allows you to maintain the consistency of the engine structure. Factory fitment translates into correct cap positioning, no stress at the mounting point, and predictable behavior during operation. This is particularly important in high-performance units used in M versions, where the lubrication system operates under demanding conditions.

The element from this group is a good choice for service work related to the valve cover, seals, or lubrication system inspection. Replacing a worn filler neck helps reduce minor leaks, makes adding oil easier, and improves service ergonomics.

Part condition and practical application

The offered filler neck comes from disassembly and is marked as a used part, which allows for economical repair while maintaining the original BMW specification. This type of component is particularly useful for:

• repairs after mechanical damage to the old filler neck,
• renovation of the powertrain in M5 and M6 models,
• completing missing lubrication system components after previous modifications.

Choosing a used, original filler neck is a reasonable compromise between cost and maintaining compliance with the factory engine design.

Integration with the lubrication system and diagnostics

When replacing the oil filler neck, it is worth paying attention to the general condition of the lubrication system – the tightness of the valve cover, the condition of the seals, and the quality of the oil used. It is good practice to combine the installation of the filler neck with a check for potential leaks in the upper part of the engine. For cars driven dynamically, regular monitoring of the oil level and the condition of the filler components has a direct impact on the durability of the powertrain.

To better understand how individual components affect engine longevity, it is worth reading the guide material regarding operating temperature and lubrication – practical tips can be found in the article Engine cooling system – overheating, repair and used radiators.

Expanding service within the BMW lubrication system

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