Vent Line Mercedes W205 Diesel OM626 Water Hose To Air Intake A6262030017

Mercedes W205 Diesel OM626 Water Hose Pipe Tube is an original cooling system component designed for OM626 diesel engines in Mercedes C-Class W205 models. This component from the Hoses, Pipes, and Tubes category ensures stable coolant flow, supporting the safe operation of the Diesel engine and proper circulation throughout the system. Thanks to its factory-matched geometry and fit to the engine architecture, the water hose allows for precise installation without altering the vehicle's structure.

Specifications and technical data

• SKU: A6262030017
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6262030017
• Substitutable numbers: A6262030017, A 626 203 00 17
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and Function in the Cooling System

The water hose in the OM626 engine is responsible for the controlled flow of coolant between key components of the cooling system. For diesel engines like the OM626, stable operating temperature directly impacts the durability of auxiliary components, running smoothness, and combustion parameters. Using a dedicated hose for the W205 minimizes the risk of leaks, kinks, or improper routing that could lead to overheating or localized pressure drops in the circuit.

Why Use an Original Water Hose for W205 OM626

In Mercedes OM626 diesel engines, the cooling system operates under variable thermal loads, especially during highway driving and in urban conditions with frequent starts. Using a hose specifically designed for this model ensures:

• appropriate diameter and internal cross-section matched to the coolant pump's performance,
• geometry consistent with the factory routing in the W205 engine bay,
• a secure connection to the nipples and other cooling system components.

This ensures predictable fluid flow and reduces the risk of uncontrolled leaks or air ingress into the system. This is particularly important in modern diesel engines where overheating can result in costly damage.

Installation and Operational Characteristics

The hose is designed for operation within the Mercedes W205 engine bay, considering typical thermal and mechanical loads. Appropriately selected stiffness and wall flexibility allow for:

• compatible routing relative to the OM626 engine's auxiliary components,
• damping of vibrations transmitted from the engine to the cooling system,
• maintaining seal integrity at connections during changes in operating temperature.

This part is from a used vehicle, offering a cost-effective choice while maintaining proper fitment to the factory installation. For workshops and individual users, this means the possibility of efficiently replacing a damaged section of the cooling system without the need for universal aftermarket parts.

Application in OM626 Diesel Engines

The OM626 engines in the Mercedes W205 are modern diesel units where the cooling system works in conjunction with advanced control electronics and extensive auxiliary components. A correctly selected water hose:

• supports maintaining stable operating temperature across the full load range,
• reduces the risk of localized overheating in the cylinder head and auxiliary component areas,
• ensures predictable operating conditions for the exhaust gas recirculation system and other components that interact with the coolant circuit.

This keeps the entire cooling system structurally cohesive, and troubleshooting potential issues becomes simpler due to the preservation of the factory configuration of hoses, pipes, and tubes.

Technical Support and Additional Materials

If you are planning a more extensive cooling system service or an upgrade of auxiliary components in vehicles with gasoline and diesel engines, educational materials on component selection, compatibility, and installation procedures may be helpful. Practical tips can be found in the article BMW Code B58 – Turbocharger and Intercooler Pre-Purchase Checklist, which shows a step-by-step approach to verifying parts, OEM numbers, and VIN matching, which can be analogously applied when working with other modern units.

If, during the cooling system service of your Mercedes C-Class, you also need other parts from the range of hoses and pipes dedicated to this brand, check the available parts in the Mercedes Hoses, Pipes, and Tubes category.