Mercedes W166 W292 Petrol Engine Cooler Coolant Hose Line Tube Pipe A1665003475

Mercedes W166 W292 Petrol Engine Cooler Coolant Hose Line Tube Pipe is an original component designed for operation within the coolant circuit of petrol-powered engines. Engineered by Mercedes, it ensures proper routing of coolant between components, which supports stable engine operating temperatures and reduces the risk of overheating.

Specifications and technical data

• SKU: A1665003475
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1665003475
• Substitutable numbers: A1665003475, A 166 500 34 75
• Fuel type: Petrol
• Category: Coolant Hoses

Purpose and function in the cooling system

The offered hose belongs to the group of components responsible for transporting fluid within the radiator and engine area, typical for Mercedes SUV models of the W166 and W292 series with petrol engines. Its task is to maintain a tight, stable flow of coolant, which translates into the proper operation of the thermostat, radiator, and other cooling system components.

Thanks to its factory-fit design for the specific engine bay architecture, the hose maintains the correct routing geometry, minimizing stress, the risk of abrasion, and unwanted vibrations during vehicle operation.

Construction and fitment for the petrol engine

The element has been constructed for use with units powered by petrol fuel, where the thermal and pressure characteristics of the cooling system differ from solutions used in diesel engines. The appropriately selected cross-section, shape, and connectors allow for:

• secure connection to radiator and/or engine ports,
• maintaining tightness at variable operating temperatures,
• stable coolant flow without local restrictions.

Such fitment reduces pressure drops in the circuit and promotes even cooling of all cylinders, which is particularly important in modern petrol units with higher power density.

Benefits of using an original hose

Using an original hose in the cooling system provides a number of practical operational benefits:

• Factory fitment – the geometry and connection diameters correspond to the solutions used by the vehicle manufacturer, which facilitates installation and limits the need for modifications.
• Stable cooling system operation – proper coolant flow supports maintaining the optimal engine operating temperature, which affects its durability.
• Compatibility with petrol engine accessories – the hose is designed for specific thermal and pressure conditions typical for petrol units.

A used original component often represents a favorable compromise between quality and cost, allowing you to maintain compliance with factory specifications at a reasonable financial outlay.

Condition of the component and installation aspects

The hose comes from dismantling and is offered as a used cooling system component. Before installation, a standard visual inspection for any signs of operational wear is recommended, as well as checking the sealing surfaces at the connectors. Replacing the hose should be combined with bleeding the cooling system and checking the quality of the coolant.

Due to its factory origin, installation in most cases is similar to plug-and-play – the hose fits standard brackets and routings, which shortens service time and reduces the risk of installation errors.

Technical support and additional materials

In the summer, the cooling system operates under particularly demanding conditions, so it is worth familiarizing yourself with practical tips regarding operation and component selection. Useful information can be found in the guide Summer heat vs. cooling system – used radiators and fans as a way to reasonable savings, which discusses the impact of high temperatures on cooling efficiency and the importance of proper component selection.

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 lines, hoses, or pipes carrying coolant, check the available parts in the category Mercedes cooling system lines and hoses.