Common types
Inlet hose: connects the expansion pot to the engine cooling system, delivering coolant to the engine.
Outlet pipe: Returns hot coolant from the engine to the expansion tank.
Overflow pipe: used in some models to discharge excess coolant or gas to maintain system pressure balance. Structural Features
The original water hose is mostly designed as a hard pipe, but due to the long-term high temperature vibration is easy to damage, some owners will change to use high temperature resistant hose LR093484 to improve reliability. When modifying, it is necessary to pay attention to the matching of the interface, for example, the original water hose of Focus and other models is designed with quick couplings, so when modifying, it is necessary to retain the original design or use a special connector.
|
Vehicle OE code |
Applicable Models |
|
LR056344 |
W176/C117 |
|
LR002589 |
W163 |
|
LR024305 |
F36 |
|
LR091813 |
G30/G15 |

The automotive sub-bottle LR001095 (also known as an expansion pot) has a venting function. Its lid is usually equipped with a vent hole through which steam or air generated within the cooling system is discharged to maintain system pressure balance. Air Vent Mechanism
When the coolant expands by heat, the excess liquid flows into the sub kettle LR015811; when the system pressure is too high (more than 0.026 to 0.037 MPa), the steam valve inside the sub kettle lid opens and some of the steam is discharged through the vent hole, reducing the system pressure. When the pressure decreases after cooling, the air valve opens to supplement the pressure and prevent the radiator core tube from being damaged due to vacuum. Function
The secondary kettle realizes the cooling system pressure regulation through the air vent to avoid parts damage due to too high or too low pressure. If the coolant is insufficient, the secondary kettle can also replenish the liquid to maintain the normal operation of the system.
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