Mercedes Vito W639 OM651 Vent Pipe Cylinder Head Breather Line Hose A6510100382

Mercedes Vito W639 OM651 Vent Pipe Cylinder Head Breather Line Hose is an original crankcase ventilation system component, responsible for the controlled discharge of gases from the cylinder head chamber in the OM651 engine. Thanks to its precise fit for the powertrain in Mercedes W639 models, it ensures stable engine operation and reduces the risk of leaks in the ventilation system.

Specifications and technical data

• SKU: A6510100382
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510100382
• Substitutable numbers: A6510100382, A 651 010 03 82
• Category: Cylinder Heads

Purpose and function in the engine system

The cylinder head breather hose in the OM651 engine plays a key role in the blow-by gas circuit, directing them from the space under the cylinder head cover to other components of the intake system. A properly selected component helps maintain the correct pressure in the cylinder head chamber, which promotes smooth engine operation and reduces the risk of oil leaks around the valve cover.

Using a dedicated hose for the specific engine and Mercedes W639 body minimizes issues with fitment, twisting, or excessive tension on the line, which translates into the stability of the entire ventilation system.

Construction and fitment for Mercedes W639 OM651

Mercedes Vito W639 OM651 Vent Pipe Cylinder Head Breather Line Hose is designed as a component with a shape and diameter adapted to the ports on the cylinder head and other system components. Properly formed sections and factory-made ends speed up installation and limit the risk of leaks at the connections.

The original Mercedes origin means compliance with factory quality standards, including resistance to engine operating temperatures and contact with oil mist. This is especially important in diesel units, where the breather system operates under demanding thermal and pressure conditions.

Component condition and service application

The offered hose comes from the Cylinder Heads category, which emphasizes its direct connection to the upper part of the engine and the timing system. As a used component, it is a cost-effective solution for servicing the ventilation system, especially in situations where the existing line shows signs of wear, cracking, brittleness, or leaks.

Replacing the cylinder head breather hose is recommended, among other things, during work involving the removal of the cylinder head, valve cover, or when diagnosing excessive smoke, increased oil consumption, or emerging leaks in the upper part of the OM651 engine.

Benefits of using an original breather hose

Using a dedicated hose in the breather system brings a number of practical service and operational benefits, such as:

• maintaining proper gas flow from the cylinder head chamber,
• reducing the risk of leaks and oil seepage around the cylinder head,
• stable operation of the ventilation system under typical engine load conditions,
• easier installation thanks to factory fitment for the OM651 engine in the W639 body.

For workshops and users of Mercedes commercial vehicles, this is a solution that allows for efficient repair without the need to use universal lines, which often require additional modifications.

Expanding the scope of repairs within the cylinder head area

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 housings, covers, or additional components related to the upper part of the powertrain, check out the available parts in the Mercedes Cylinder Heads category.

Practical installation and operational tips

When installing the cylinder head breather hose, it is worth paying attention to the correct routing of the line relative to other engine accessories to avoid rubbing against sharp edges or moving parts. It is also recommended to check the condition of the ports on the cylinder head and cooperating elements in the breather system to ensure the tightness of the entire gas flow path.

Regular visual inspection of the breather lines in the OM651 engine allows for early detection of material aging signs, which makes it easier to plan a replacement before an actual leak occurs or vehicle operating comfort decreases.

If you want to deepen your knowledge on the conscious selection of used components and the regeneration of wear-and-tear parts, the guide article Used rims like new: a guide to buying and refurbishing alloy wheels may be helpful, as it shows what to look for when choosing parts from the secondary market.