BMW X3 Series E83 Engine Cooling Radiator Expansion Tank Hose Petrol 3400417

BMW X3 Series E83 Engine Cooling Radiator Expansion Tank Hose Petrol is an original cooling system component designed for BMW vehicles with a petrol engine. Thanks to its factory geometry and diameter, it ensures stable coolant flow and proper cooperation with other system components. This is a practical solution for users who want to restore proper fluid circulation in their BMW X3 E83 without the costly replacement of the entire cooling set.

Specifications and technical data

• SKU: 3400417
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 64213400417
• Substitutable numbers: 64213400417, 3400417
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and function in the cooling system

The presented water hose is responsible for transporting coolant between system components, which is crucial for maintaining a stable operating temperature of the power unit. In the case of BMW X3 E83 petrol engines, a properly selected water hose reduces the risk of overheating, uneven engine block heating, and heater operation issues.

By maintaining the original shape and connection diameter, the hose works with factory connectors, tees, and housings, which facilitates installation and minimizes the risk of leaks. This is particularly important in vehicles operated in variable temperature conditions, where the cooling system is exposed to cyclical pressure and temperature changes.

Construction and fitment for the BMW X3 E83

The hose has been designed as a component dedicated to the BMW X3 E83 platform, which means that its length, bending radii, and routing points correspond to the manufacturer's factory specifications. Such fitment translates into:

• secure hose routing in the engine bay without tension or twisting,
• reduced risk of rubbing against other mechanical components,
• easier installation in place of the factory hose.

Its original BMW origin promotes compatibility with factory clamps and brackets, which facilitates service and subsequent leak checks.

Performance characteristics of the used part

The item comes from dismantling and is offered as a used part, which allows for an economical repair of the cooling system while maintaining an OEM line component. This type of solution is particularly beneficial for older BMW X3 E83 models, where the priority is reasonable service costs while maintaining correct operating parameters.

Choosing a used water hose makes sense especially when the existing component has suffered mechanical damage (cracking, abrasion, deformation) or there are leaks at the connections. Using an original part from the secondary market helps reduce the risk of fitment issues typical of universal geometry replacements.

Benefits of using an original water hose

Using a water hose dedicated to the BMW X3 E83 with a petrol engine brings a number of practical benefits:

• Factory fitment – compatibility with the cooling system and hose routing in the engine bay.
• Stable fluid flow – the correct cross-section and shape support even cooling of the power unit.
• Reduced risk of overheating – proper fluid circulation reduces the thermal load on the engine.
• Economical repair – a used OEM part allows for reduced service costs while maintaining appropriate quality.

If you are planning broader cooling system maintenance or replacing several components at once, it is worth checking other components available in the Lines, hoses and pipes category to complete a coherent set of parts.

Part selection by parameters and technical support

To ensure that the presented water hose will work properly with your BMW X3 E83 petrol model, it is recommended to verify compatibility using catalog numbers and vehicle data. The product description contains information such as stock ID, manufacturer part number, interchangeable numbers, brand, condition, and fuel type, marked with appropriate data-option attributes (including SKU, OEM Part Number, Interchangeable numbers, Brand, Condition, Fuel type).

Additional tips regarding informed selection of secondary market components, their compatibility, and installation can be found in our guide: why it is worth considering used components and how to properly select parts by OEM numbers. This is a practical supplement to your knowledge when planning repairs and upgrades of systems in modern cars.