Mercedes W164 Water Radiator Coolant Hose Pipe Line OM642 Diesel A1645014782

Mercedes W164 Water Radiator Coolant Hose Pipe Line OM642 Diesel is an original component from the Cooling system hoses and pipes group, designed for diesel engines. It ensures stable coolant flow within the system, which translates into safe engine operation and reduces the risk of overheating during daily use.

Specifications and technical data

• SKU: A1645014782
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1645014782
• Substitutable numbers: A1645014782, A 164 501 47 82
• Fuel type: Diesel
• Part type: Hose
• Category: Coolant Hoses

Purpose and function in the cooling system

The offered hose is a component of the cooling system for the OM642 diesel engine installed in the Mercedes W164 class. It is responsible for the controlled flow of coolant between individual system components, maintaining a stable engine operating temperature and supporting its durability in both urban and highway driving conditions.

Thanks to its precise fit to the engine bay geometry, the hose maintains proper connection tightness and correct positioning relative to the radiator, water pump, and other system components.

Benefits of using an original hose

Using an original cooling system hose in a Mercedes W164 with an OM642 diesel engine allows you to maintain the factory performance parameters of the power unit. The hose construction is adapted to the thermal and pressure loads typical for this engine, which limits the risk of leaks and uncontrolled pressure drops in the system.

Stable coolant flow translates into even heat dissipation from the engine block and cylinder heads, and thus more predictable engine behavior under load. This is particularly important in vehicles used for towing, on long journeys, or in high ambient temperatures.

Characteristics of the used component

The hose comes from dismantling, which allows you to combine original fitment with a more favorable purchase cost compared to a new component. Such cooling system elements, when maintained properly, retain their functional properties and can be successfully used as a replacement during repairs or preventive system maintenance.

Original construction ensures compatibility with factory mounts, clamps, and connectors, which facilitates installation and reduces the time required to fit the hose in the engine bay.

Installation and maintenance tips

When replacing the cooling system hose in a Mercedes W164 with an OM642 diesel engine, it is recommended to:

• check the condition of other hoses and pipes in the cooling system,
• verify the condition of hose clamps and replace them with new ones if necessary,
• bleed the system after refilling with fresh coolant,
• check for leaks after the engine has reached operating temperature for the first time.

This approach helps maintain the integrity of the entire cooling system and reduces the risk of subsequent leaks or engine overheating.

Related cooling system components and technical knowledge

In the summer season, it is particularly important that the entire cooling system – from hoses and radiators to fans – operates in a predictable and leak-free manner. If you want to better understand how high temperatures affect cooling system efficiency and how to use used components wisely, check out our guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.

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 additional pipes, hoses, or coolant connectors, check out the available parts in the Mercedes cooling system hoses and pipes category.

Summary

The Mercedes W164 Water Radiator Coolant Hose Pipe Line OM642 Diesel is a practical solution for users who want to maintain factory engine performance parameters at reasonable service costs. The original construction, fitment for the specific model, and the ability to integrate with the existing cooling system make it a functional choice for repairs and upgrades of the vehicle's thermal system.