BMW E90 LCI E91 LCI E92 LCI Radiator Water Cooling Hose Pipe Tube Line 7599450

BMW E90 LCI E91 LCI E92 LCI Water Radiator Hose 7599450 is an original cooling system component designed for facelifted BMW 3 Series models. Thanks to its factory geometry and appropriately selected diameter, it ensures stable coolant flow between engine components, supporting the safe operation of the powertrain.

Specifications and technical data

• SKU: 7599450
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7599450
• Substitutable numbers: 7599450, 17127599450, 7537604
• Category: Coolant Hoses

Application and Function in the Cooling System

The water radiator hose in BMW E90 LCI, E91 LCI, and E92 LCI models is responsible for precise coolant routing between the radiator and engine components. Its appropriately shaped profile and fitted ends minimize the risk of kinks, leaks, and localized overheating, which directly impacts maintaining the correct engine operating temperature.

This item from the Cooling System Hoses and Pipes category is crucial for any intervention in the coolant circuit – whether replacing the radiator, servicing the thermostat, or the water pump.

Advantages of Using an Original BMW Hose

Choosing an original radiator hose dedicated to specific facelifted 3 Series body variants allows for maintaining the factory routing of hoses in the engine bay. This translates to:

• secure fit to radiator and engine spigots,
• correct positioning relative to the fan, covers, and other hoses,
• reduced risk of rubbing against bodywork or auxiliary components,
• stable cooling system operation in urban and highway conditions.

By adhering to the original specifications, installation is smooth, without the need for modifications or the use of additional clamps beyond those designed for the system.

Part Condition and Service Application

The offered water radiator hose is a used part, making it an attractive solution for budget repairs or for restoring older BMW 3 Series models to full working order. It is a practical choice when the existing hose shows signs of wear, hardening, micro-cracks, or leaks at the connections.

Hose replacement is recommended, among other situations, for:

• a drop in coolant level without visible leaks from the radiator,
• trace leaks at clamps or spigots,
• planned modernization or overhaul of the cooling system.

Cooling System Support in Summer Conditions

A functional radiator hose is particularly important during high ambient temperatures when the cooling system's load increases. Leaks or hose deformations can lead to engine overheating, reduced performance, and accelerated component wear. To better understand the impact of temperature on the coolant circuit and potential savings when using used parts, it is worth reading the guide Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings.

Selection and Compatibility within the 3 Series

This component has been designed with the specific engine bay architecture of the BMW E90 LCI, E91 LCI, and E92 LCI in mind, facilitating the maintenance of factory hose routing and proper airflow around the radiator. When selecting, pay attention to compatibility with your body version and cooling system configuration to fully leverage the benefits of this original component.

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other parts from the same group, such as additional pipes, return hoses, or sections connecting to the heater core, check the available parts in the BMW Cooling System Hoses and Pipes category.