Mercedes W213 W238 Engine Cooling Hose Pipe Line Petrol M256 M264 A2385010801

The Mercedes W213 / W238 Petrol Engine Coolant Hose is an original part designed for M256 and M264 petrol engines. Developed by the vehicle manufacturer, it ensures proper coolant flow, stable engine thermal operation, and safe heat dissipation under demanding operating conditions.

Specifications and technical data

• SKU: rhd-A2385010801
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2385010801
• Substitutable numbers: A2385010801, A 238 501 08 01
• Fuel type: Petrol
• Category: Coolant Hoses

Application and Function in the Cooling System

This hose belongs to the Cooling System Hoses and Pipes group and is responsible for precise coolant routing between engine components and accessories. In M256 and M264 petrol engines, correct coolant flow is crucial for maintaining stable operating temperature, protecting the cylinder head, block, and accessories from overheating, and reducing the risk of localized thermal stress.

The original hose geometry ensures:

• proper positioning relative to the engine block and accessories,
• minimization of abrasion and contact with hot components,
• maintenance of the correct coolant flow cross-section.

Compatibility with Petrol Engines

This component has been specifically developed for petrol units, meaning it is tailored to the thermal characteristics of petrol engines. In practice, this translates to:

• adaptation to the operating temperature range typical for modern petrol engines,
• resistance to operating pressure in the cooling system,
• compatibility with the factory thermostat, water pump, and radiator.

Therefore, this hose is the correct choice for cooling system service on E-Class and E-Coupé models of the W213 / W238 generation with M256 and M264 engines when maintaining factory specifications is required.

Characteristics of an Original Mercedes Part

As a Mercedes product, the engine coolant hose maintains factory standards of manufacturing and fit. This includes, among other things, appropriately selected material flexibility, precise ends for connectors, and a shape adapted for factory routing within the engine bay. The nature of this part allows for economical repair while preserving the original cooling system design.

Compared to aftermarket alternatives, using an original hose reduces the risk of installation problems, leaks, and improper positioning in the engine bay, which is particularly important in densely packed turbocharged engines with extensive accessories.

Importance of a Proper Hose in Diagnostics and Service

During cooling system diagnostics, it is important to pay attention to the condition of the hoses – their flexibility, any cracks, signs of leaks, or deformation. Replacement with the correct, original part is recommended in cases of:

• detected leaks at connections or along the working section,
• visible mechanical damage,
• loss of stiffness or excessive “swelling” under pressure.

To better understand the impact of functional hoses and radiators on engine longevity, it is worth consulting a guide on cooling system diagnostics and repair – this is thoroughly discussed in the article Engine Cooling System – Overheating, Repair, and Used Radiators.

Expansion and Modernization of the Mercedes Cooling System

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

By using original components from the same product group, it is easier to maintain the technical consistency of the entire system, which translates to stable operating temperatures, reduced thermal load on the engine, and predictable vehicle behavior in urban traffic and under higher loads.