BMW E90 E91 LCI F10 F11 N57 Water Pump Thermostat Housing 7823193

BMW E90 E91 LCI F10 F11 N57 Water Pump Thermostat Housing is an original cooling system component designed for BMW 3 Series E90 LCI and 5 Series F10 diesel engines with the N57 unit. Thanks to its factory geometry and fitment, it ensures proper coolant flow between the thermostat housing and other system components, which supports stable engine operating temperatures. It is a practical solution for users who want to maintain structural consistency and performance parameters in accordance with the manufacturer's standards.

Specifications and technical data

• SKU: 7823193
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7823193
• Substitutable numbers: 7823193, 11517823193
• Category: Other Engine Parts

Purpose and function in the cooling system

The described thermostat housing pipe is a component of the cooling system in N57 diesel engines used in the BMW E90 LCI and F10. It is responsible for directing coolant flow in the thermostat area, which influences:

• maintaining a stable engine operating temperature,
• proper operation of the thermostat and its opening point,
• even distribution of coolant in both small and large circuits.

By maintaining the original design, this component helps reduce the risk of engine overheating or undercooling, which translates into safer operating conditions for the N57 unit.

Construction and fitment for BMW E90 LCI and F10

The thermostat housing pipe was designed by BMW as part of the cooling system, taking into account the specific layout of hoses and components in the engine bay of the E90 LCI and F10 models. This means:

• factory mounting points matched to the original brackets,
• geometry consistent with the routing of hoses and the thermostat housing,
• compatibility with original connectors and seals.

Such a solution facilitates installation and allows for consistency with the factory BMW cooling system design, without the need for modifications or the use of universal parts.

Used condition and benefits of using OE parts

The item is offered in a used condition, which allows for an economical replacement while maintaining the quality characteristic of original BMW OE parts. In practice, this means:

• retaining the original rigidity and shape intended by the manufacturer,
• better fitment than many aftermarket replacements,
• the ability to restore proper cooling system operation after damage or wear of the previous component.

Choosing an original thermostat housing pipe is particularly important in diesel engines, where stable operating temperature affects the durability of the unit and its accessories.

Installation and maintenance tips

When replacing the thermostat housing pipe in an N57 engine, it is worth paying attention to several technical aspects:

• checking the condition of the seals working with the pipe,
• verifying system tightness after installation and bleeding,
• verifying thermostat operation and engine operating temperature after the first driving cycles.

A correctly installed component helps maintain stable cooling parameters, which is crucial for the daily operation of BMW 3 and 5 Series cars with the N57 engine.

Expanding knowledge and selecting other components

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other items from the same group, such as cooling hoses, connectors, or thermostat housings, check out the available parts in the Other BMW category.

If you are interested in a broader context of using dismantled parts in BMW 3 and 5 Series models, including practical tips on working with electronic systems and vehicle maintenance, it is worth reading the article Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 Series models, which helps in better planning service and component selection.

For a comparison of the characteristics of sports engines and technical solutions in other brands, you can also refer to the material Audi RS vs other models – what is hidden under the hood and chassis?, which shows how different manufacturers approach the construction of engines, brakes, and chassis.