Mercedes Sprinter W910 OM651 Oil Filler Neck Cylinder Head Pipe Cap A6510106621

Mercedes Sprinter W910 OM651 Oil Filler Neck Cylinder Head Pipe Cap is an original lubrication system component designed for the precise delivery of engine oil in OM651 power units. Thanks to its factory geometry and perfect fit for the Sprinter W910 design, this component ensures stable oil routing and convenient service access during engine maintenance.

Specifications and technical data

• SKU: A6510106621
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510106621
• Substitutable numbers: A6510106621, A 651 010 66 21
• Category: Oil Drain Plugs, Filler Caps & Dipsticks

Purpose and function in the lubrication system

The oil filler neck in the OM651 engine is responsible for the safe and controlled replenishment of lubricant, minimizing the risk of contamination and oil spills on engine accessories. The properly profiled pipe directs oil directly into the engine unit, supporting the correct operation of the lubrication system in the Mercedes Sprinter W910.

The original design ensures:

• secure mounting at the factory points of the OM651 engine,
• proper oil routing without kinks or restrictions,
• easy access during periodic oil changes and top-ups.

Benefits of using an original oil filler neck

Using a component that complies with factory specifications is crucial for the durability of the power unit. A properly selected oil filler neck reduces the risk of leaks, accidental oil splashing, and installation problems associated with aftermarket parts of uncertain origin.

The main advantages include:

• Compatibility with the OM651 engine – geometry and diameter matched to the factory lubrication system of the Sprinter W910.
• Stable mounting – the pipe operates in the position intended by the manufacturer, without stress or uncontrolled vibrations.
• Convenient service maintenance – easy access to the filler point during oil changes or routine top-ups.

Category characteristics: Oil drain plugs, filler caps, and dipsticks

Components in the Oil drain plugs, filler caps, and dipsticks group are responsible for sealing, level control, and safe oil routing within the engine. The oil filler neck in the Mercedes Sprinter W910 works in conjunction with other lubrication system components, such as the drain plug or dipstick, to create a cohesive engine oil management system.

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

Used condition and selecting the right part

The presented oil filler neck is offered as a used part, which allows you to combine original quality with an attractive purchase price. Before installation, it is recommended to perform a standard visual inspection and check the mounting points and sealing seats for compatibility with your specific OM651 engine.

To select the correct component for a specific version of the Sprinter W910, it is worth using the manufacturer's markings and interchangeable numbers visible in the technical specifications section – this helps avoid installation issues and ensures full compatibility with the factory lubrication system.

Technical support and service knowledge

The proper condition of the lubrication and oil cooling system has a direct impact on the lifespan of the power unit. In the context of operating diesel engines, it is worth paying attention to the relationship between oil operating temperature and its ability to protect moving parts. More practical information on the impact of temperature and auxiliary systems on the durability of the power unit can be found in the article "Engine cooling system – overheating, repair, and used radiators", which discusses, among other things, the importance of proper oil cooling in modern designs.