BMW E82 E90 E91 E92 135i 335i N54 Engine Coolant Thermostat Housing 7573212

BMW E82 E90 E91 E92 135i 335i N54 Engine Coolant Thermostat Housing is a component from the Thermostats and housings category, designed for the cooling system of BMW units with the N54 engine. It is a practical solution for users looking for a factory fit and a proven design on a reasonable budget.

Specifications and technical data

• SKU: 7573212
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7558522
• Substitutable numbers: 11427573212, 7573212, 11427564892, 7564892
• Category: Thermostats & Housings

Purpose and function in the cooling system

The thermostat housing in the N54 engine is responsible for the stable flow of coolant and works in conjunction with the thermostat that regulates the unit's operating temperature. A properly selected housing helps maintain correct thermal parameters, which translates into smooth engine operation, reduced risk of overheating, and proper interaction with the control electronics.

By using an original BMW thermostat housing, you maintain the factory coolant flow geometry, which is essential for turbocharged engines such as the N54, especially in 135i and 335i models, where the cooling system operates under higher thermal loads.

Design and fitment for BMW E90 135i / 335i N54

The presented housing has been designed specifically for use with the N54 engine, ensuring:

• factory mounting points to the engine block,
• properly shaped connection ports for coolant hoses,
• compatibility with the thermostat intended for this power unit.

Such fitment facilitates installation and reduces the risk of leaks, which is crucial for maintaining a stable operating temperature and protecting engine auxiliary components.

Product characteristics and benefits of use

The thermostat housing in this offer comes from the BMW parts group, which means it adheres to the manufacturer's standards regarding dimensions and compatibility. Choosing a used component of this type is often a beneficial solution for:

• repairs after cooling system failure,
• eliminating leaks in the thermostat area,
• comprehensive maintenance of the N54 engine after mileage that requires a cooling system inspection.

A used housing allows for lower service costs while maintaining the original design, which is particularly important in the case of precisely tuned units, as found in 135i and 335i models.

Condition and installation aspects

The item is offered as a used part, which in practice means it comes from disassembly and is intended for further use after proper installation. Before installation, it is recommended to perform a standard inspection of the seal seats and contact surfaces with the engine block and hoses, as well as to use new seals in accordance with the vehicle manufacturer's recommendations.

Professional installation of the thermostat housing in the N54 engine helps restore proper coolant circulation, which has a direct impact on the durability of the power unit and the stability of operating parameters in daily use.

Expanding the cooling system in BMW

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional housings, thermostat bodies, or related cooling system components, check out the available parts in the BMW Thermostats and housings category.

For drivers interested in a conscious approach to using used parts in a vehicle, including components that work with electrical and cooling systems, a practical guide on alternators may be helpful – more information can be found in the article When is it worth replacing an alternator with a used one: a practical guide for drivers.