Hose Mercedes W166 M276 Coolant Heater Hose Heating Water Line A1668304096

Mercedes W166 M276 Coolant Hose Pipe Water Hose is an original cooling system component from the Cooling System Hoses and Pipes group, designed for use in Mercedes vehicles with the M276 engine. A used OEM part ensures factory geometric fit, proper coolant flow, and stable engine thermal management.

Specifications and technical data

• SKU: A1668304096
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1668304096
• Substitutable numbers: A1668304096, A 166 830 40 96
• Part type: Line
• Category: Coolant Hoses

Technical Characteristics of the Cooling Hose

The presented water hose is a cooling system component responsible for directing coolant between key components of the M276 engine in the W166 body. The hose's design is adapted to the factory routing in the engine bay, which minimizes the risk of collision with other components and reduces stress during engine operation.

Thanks to the use of an original Mercedes solution, the correct inner diameter and cross-sectional shape are maintained, which translates to stable fluid flow and proper heat dissipation from the engine. This is particularly important under high thermal load conditions, typical for modern gasoline engines.

Role in the M276 Engine Cooling System

The cooling hose in this model is responsible for:

• transporting coolant between engine cooling system components,
• maintaining system integrity under varying pressures and temperatures,
• stable fluid routing within the W166 engine bay,
• reducing the risk of overheating the M276 unit during intensive use.

Using an original hose allows for maintaining the cooling system's operating parameters as intended by the manufacturer, which is important for both engine durability and the proper functioning of auxiliary equipment.

Why Choose an Original Mercedes Hose

Choosing an original hose from the Cooling System Hoses and Pipes group for your Mercedes ensures:

• factory fit for the cooling system in the W166 body with the M276 engine,
• compatibility with original clamps and connectors,
• appropriate material resistance to operating temperature and pressure,
• adherence to the manufacturer's intended hose routing.

A used OEM part is a cost-effective solution that is also technically consistent with the rest of the cooling system, which is important for servicing Mercedes vehicles.

Component Condition and Service Application

The offered hose is in Used condition, meaning it comes from a dismantled vehicle and can be used as a replacement for a damaged or leaking component in your Mercedes. This type of component is particularly useful for cooling system repairs when a single section of the installation needs replacement without affecting other parts.

Before installation, a standard check of connection tightness and verification of the hose's correct positioning relative to other components in the engine bay are recommended to ensure trouble-free long-term operation.

Complementary Cooling System Components and Service Knowledge

If you are planning a comprehensive repair or upgrade of the cooling system area in your Mercedes and need other parts from the same group, such as additional water pipes, flexible return hoses, or sections supplying fluid to the radiator, check the available parts in the Mercedes Cooling System Hoses and Pipes category.

To better understand the impact of a functioning coolant circulation on engine durability and to prepare your car for high temperatures, it is worth reading the guide “Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings”, which provides practical tips on operating and servicing the cooling system.