BMW i3 I01 Coolant Hose Hybrid Rex Water Cooling Pipe Radiator 7623677

The BMW i3 I01 Hybrid Rex Coolant Hose Pipe Radiator Water Hose is an original cooling system component designed for vehicles with a petrol engine and Range Extender. This precisely shaped hose ensures stable coolant flow between the radiator and other components, supporting the safe operating temperature of the powertrain under demanding conditions.

Specifications and technical data

• SKU: 7623677
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7623677
• Substitutable numbers: 17127623677, 7623677
• Fuel type: Petrol
• Category: Coolant Hoses

Purpose and Function in the Cooling System

The presented hose belongs to the Cooling System Hoses and Pipes group, responsible for transporting coolant within the engine, radiator, and accessories. In the BMW i3 I01 with the Rex system, this hose forms part of the coolant circuit for the petrol-powered combustion unit, which is crucial for maintaining stable temperatures and protecting components from overheating.

The appropriately selected shape and diameter of the hose allow for:

• maintaining proper coolant flow under varying engine loads,
• reducing the risk of local turbulence and pressure drops in the circuit,
• secure connection to radiator spigots and engine components.

Advantages of Using an Original BMW Hose

Using an original water hose in the BMW i3 I01 Hybrid Rex ensures high dimensional accuracy with the factory cooling system. This means:

• precise fit to brackets and guides in the engine bay,
• correct routing relative to other components, minimizing the risk of abrasion,
• maintaining the coolant flow characteristics designed by the manufacturer.

Thanks to this, the hose can be used for both standard replacement of a worn part and for repairs after a cooling system failure, supporting stable and predictable operation of the entire system.

Operational Characteristics and Installation

This component comes from a petrol-powered vehicle, which is important when selecting parts for a specific BMW i3 I01 Hybrid Rex powertrain configuration. The hose's construction is designed to operate within the typical temperature and pressure ranges of the cooling system found in combustion engines used as Range Extenders.

When installing, pay attention to:

• correct seating of the ends on the spigots and the use of appropriate clamps,
• routing the hose according to the factory guides, maintaining clearance from moving and hot parts,
• thorough bleeding of the cooling system after replacement to avoid local overheating.

This type of hose, as a used part, can be a cost-effective solution while maintaining factory geometry and compatibility with the BMW cooling system.

Cooling System and Powertrain Durability

A functional radiator water hose directly contributes to protecting the engine from overheating, which is particularly important in hybrid vehicles with an additional combustion unit. Leaks, pressure drops, or hose deformations can lead to coolant loss and a rapid increase in operating temperature.

To better understand the relationship between individual cooling system components and engine longevity, it is worth reading the guide: Engine Cooling System – Overheating, Repair, and Used Radiators. The article discusses practical aspects of diagnostics and repair that help in choosing the right service strategy, also for BMW models.

BMW Cooling System Service Extension

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

If you have doubts regarding the selection of used parts and their actual durability, the following guide may also be helpful: Used Car Parts: Myths and Facts You Need to Know, which explains in an accessible way how to make informed purchasing decisions for aftermarket components.