Thermostat BMW E90 E91 LCI F20 F30 N47N Diesel Engine Water Coolant Unit 8507694

BMW E90 LCI F20 F21 F30 Oil Separator Thermostat N47N 8507694 is a specialized component from the Thermostats and Housings category, designed for BMW diesel engines. It combines the function of an oil separator and a thermostatic system, allowing for more stable operation of the Diesel engine and reducing oil loss in the crankcase ventilation system.

Specifications and technical data

• SKU: 8507694
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8507694
• Substitutable numbers: 11428507694, 8507694, 70379335, 52207246697, 7246697, 52207164271, 7164271
• Fuel type: Diesel
• Category: Thermostats & Housings

Application in BMW Diesel N47N Engines

The presented oil separator with thermostat is dedicated to modern BMW Diesel units, including popular configurations used in 1 Series, 3 Series, and related models. Integrating oil separation with coolant temperature control allows for:

• more stable engine operating conditions across a wide range of loads,
• more efficient removal of oil vapors from the crankcase ventilation system,
• maintaining the correct operating temperature, which contributes to the smooth operation of the N47N unit.

Construction and Function of the Oil Separator with Thermostat

The oil separator integrated with the thermostat is responsible for separating oil mist from gases before they return to the intake system and for controlling coolant flow. This results in:

• a reduced amount of oil entering the intake, which limits carbon deposit buildup,
• the cooling system reaching operating temperature faster,
• the engine operating under more predictable thermal conditions.

This combination of functions in a single module is particularly beneficial in modern diesel units, where precise control of temperature and mixture cleanliness is crucial for the durability of the components.

Benefits of Using an Original BMW Part

Using an original BMW solution for the oil separator and thermostat translates into a number of practical advantages:

• Factory Fit for the cooling and crankcase ventilation system in BMW Diesel engines, with no modifications required.
• Compatibility with factory sensors and hoses, facilitating installation and servicing.
• Operating parameters consistent with manufacturer specifications, helping to maintain stable coolant temperature and reduce oil consumption.

For users looking to restore proper operation of the cooling and crankcase ventilation system, replacing this module is one of the key service steps.

Condition, Origin, and Quality Control

The part originates from the BMW group and is classified as used, allowing for economical repair while maintaining original construction. Before being offered, the part is verified for housing tightness and overall visual condition to ensure proper operation in the diesel engine system.

BMW Thermostats and Housings – Selecting the Right Part

When selecting an oil separator with a thermostat for a specific BMW diesel model, it is important to pay attention to compatibility with the engine unit and the vehicle's year of manufacture. If in doubt, it is helpful to compare the housing design and the arrangement of the connectors with the currently installed part. If you need other products from the Thermostats and Housings category dedicated to this brand, check the BMW thermostats and housings available in our store to select a complete solution for your cooling system.

More About Upgrades and Used Parts

If you are interested in a broader context of using used parts for car upgrades, it is worth familiarizing yourself with an analysis of structural changes across generations of popular models. An example could be an article describing the development of sports hatchbacks, which discusses, among other things, component selection and sensible areas for upgrades – you can find it here: The Legend of Hot-Hatch: Evolution of the VW Golf GTI from Mk1 to Mk8 – Structural Changes and VW Car Parts.