BMW X3 E83 2.0i N46 Cooling System Coolant Water Hose Pipe 3404071

BMW X3 E83 2.0i Cooling System Coolant Water Hose Pipe is a component from the Cooling system hoses and pipes group, designed for the petrol engine in the BMW X3 E83 2.0i model. It is responsible for the stable flow of coolant, which has a direct impact on the engine's operating temperature, durability, and operational safety.

Specifications and technical data

• SKU: 3404071
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 3404071
• Substitutable numbers: 17113404071, 3404071
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and function in the cooling system

The coolant water hose in the BMW X3 E83 2.0i operates in the coolant circuit between key system components, such as the engine block, radiator, and other parts responsible for heat dissipation. For petrol engines, a stable operating temperature is particularly important; therefore, a functional hose minimizes the risk of overheating, performance loss, and accelerated wear of engine components.

The item belongs to the Cooling system hoses and pipes group, meaning it has been designed to operate under variable pressure and at the elevated temperatures typical of petrol engine cooling systems.

Technical characteristics and compatibility

The presented hose is part of the original BMW line, which ensures proper fitment for the cooling system in the petrol-powered X3 E83 2.0i model. The hose construction is prepared for use with factory connectors and clamps, which facilitates installation and reduces the risk of leaks after replacement.

The product has a dedicated OEM part number and associated replacement numbers, allowing it to be precisely verified against the manufacturer's catalog or service documentation. This is crucial when selecting a part for a specific engine version and vehicle model year.

Product condition and service application

The coolant water hose is offered as a used part, which allows for an economical repair of the cooling system while maintaining original BMW specifications. This type of component is suitable both for standard replacement of worn hoses and for repairs following a failure related to coolant leakage.

Hose replacement is recommended, among other situations, when there are traces of coolant in the engine bay, visible rubber cracks, deformations, or problems with maintaining system pressure. Using a hose that complies with factory specifications reduces the risk of recurring leaks and facilitates subsequent diagnostics.

Benefits of a properly functioning cooling hose

A functional coolant water hose in the BMW X3 E83 2.0i translates into:

• stable operating temperature of the petrol engine,
• reduced risk of engine overheating,
• more predictable operating conditions for other cooling system components,
• maintenance of factory engine performance parameters during daily use.

For the user, this means more reliable, consistent engine operation and a lower risk of costly repairs resulting from long-term driving with an incorrect engine temperature.

Related cooling system components and technical knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as additional hoses, return lines, or sections connecting to the radiator, check the available parts in the BMW cooling system hoses and pipes category.

To better understand the impact of a functional cooling system on engine longevity, it is worth checking out the technical guide describing symptoms of overheating, diagnostic methods, and the importance of quality components – a detailed discussion can be found in the article Engine cooling system – overheating, repair, and used radiators.

Summary

BMW X3 E83 2.0i Cooling System Coolant Water Hose Pipe is a practical service solution for users of the petrol X3 E83 version who want to restore proper cooling system operation while maintaining the manufacturer's original specifications. A properly selected hose supports stable engine temperature, improves operational safety, and is an important element of prevention against engine overheating.