Mercedes W164 OM629 Crankcase Cover Pressure Control Valve Hose A6290180582

Mercedes W164 OM629 Crankcase Ventilation Hose Water Pipe is a component from the Cooling System Hoses and Pipes group, designed for OM629 diesel engines in the W164 model. It is responsible for the proper routing of the medium in the crankcase ventilation and cooling system areas, which directly impacts the stable operating temperature of the engine unit and its durability.

Specifications and technical data

• SKU: A6290180582
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6290180582
• Substitutable numbers: A6290180582, A 629 018 05 82
• Fuel type: Diesel
• Category: Coolant Hoses

Purpose and Function in the Cooling System

The crankcase ventilation hose connected to the water circuit in the OM629 diesel engine operating in the Mercedes W164 is responsible for the controlled removal of gases from the crankcase and their proper separation from the cooling system. A correctly selected hose ensures connection tightness, stable flow, and reduces the risk of localized overheating, which is particularly important in high-power diesel units.

Thanks to its tailored geometry and factory flow characteristics, the hose works with other cooling system components, maintaining the correct fluid temperature and supporting uniform cooling of the engine head and block.

Compatibility with OM629 Diesel Engine

The component has been designed to work with the Diesel OM629 engine used in the Mercedes W164, which means compatibility with factory hose routing, brackets, and spigots. Such a fit reduces stress on the connections, decreases the risk of micro-cracks, and facilitates installation without the need for modifications to other components.

The correct fit of the hose to the specific engine unit is crucial for maintaining proper system pressure and for stable crankcase ventilation operation, which translates to engine running smoothness and reduced contamination in the intake system.

Characteristics of the Used Component

The offered hose comes from a used vehicle, allowing for an economical replacement of the component while maintaining original geometry and compatibility with the factory cooling system. A used component of this type is often chosen when servicing older models, where both fit and reasonable repair cost are important.

For cooling system hoses and pipes, it is important that the element retains adequate flexibility, shows no visible cracks, and has stable ends on the spigots – these features allow for trouble-free installation and continued operation under the demanding conditions of a diesel engine.

Significance for Cooling System Durability

A functional crankcase ventilation hose connected to the water circuit reduces the risk of leaks, air ingress into the system, and uncontrolled increases in coolant temperature. In diesel engines, where thermal loads are high, attention to the condition of hoses and pipes directly impacts the lifespan of seals, the cylinder head, and the turbocharger.

To better understand the influence of individual components on the engine's operating temperature, it is worth consulting the guide on cooling system diagnostics and service: Engine Cooling System – Overheating, Repair, and Used Radiators. This will allow you to consciously plan maintenance and component replacements in your Mercedes.

Expanding the Mercedes Cooling System

If you are planning a comprehensive repair or engine area upgrade for your Mercedes and need other parts from the same group, such as additional hoses, return pipes, or sections connecting to the radiator, check the available parts in the category Mercedes Cooling System Hoses and Pipes.

For more advanced modifications or performance enhancements using aftermarket components, the guide on safe tuning with used parts may also be helpful: Tuning with Used Parts – How to Gain Performance Without Losing a Fortune. This will help you more easily plan service work and potential cooling system upgrades for your car.