BMW 1 Series F20 F21 LCI Line Pipe SCR Metering Module Coolant Pump AdBlue

BMW 1 Series F20 F21 LCI Line Pipe SCR Metering Module Coolant Pump AdBlue is a specialized component designed for the SCR system in diesel engines. It is responsible for reliably pumping coolant within the metering module, which stabilizes operating temperatures and supports proper AdBlue dosing. Thanks to this component, the exhaust emission reduction system maintains correct operating parameters and helps ensure compliance with environmental standards.

Specifications and technical data

• SKU: 8473993
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8473993
• Substitutable numbers: 11538473993, 8473993, AS
• Category: Vacuum Pumps

Application in BMW 1 Series F20/F21 LCI

The presented BMW 1 Series F20 F21 LCI Line Pipe SCR Metering Module Coolant Pump AdBlue has been designed for BMW 1 Series F20/F21 models after the facelift (LCI). It works with the AdBlue metering module, ensuring a stable flow of coolant in the exhaust system area. A properly functioning pump reduces the risk of overheating the metering components, which translates into uniform urea solution spraying and effective nitrogen oxide reduction.

The item comes from the Vacuum pumps group, which means it is structurally adapted to operate in demanding vacuum conditions and variable thermal loads typical for modern BMW diesel units.

Construction and technical function

The pump works with the AdBlue metering module, creating a closed cooling circuit in the SCR system area. In practice, this means:

• stabilization of the metering module temperature across a wide range of engine loads,
• maintaining appropriate operating conditions for precise urea solution dosing,
• reducing the risk of emission system malfunctions during long-term driving under load.

Thanks to the factory design provided by BMW, the pump is matched to the original connectors and hoses, which facilitates installation and minimizes the risk of leaks. The appropriate flow characteristics allow for maintaining a balance between cooling efficiency and the vehicle's electrical system load.

Selection by OEM number and interchangeable numbers

The item has a dedicated OEM part number and associated interchangeable numbers, which facilitates unambiguous identification in BMW catalogs and parts selection systems. When replacing, it is always recommended to verify compatibility by the original number or reference numbers to avoid fitment issues with a specific engine version and 1 Series model year.

If you want to deepen your knowledge about selecting power supply and engine accessory components by OEM numbers and correct diagnostics, the blog article Fuel system – injectors, pumps and fuel tank: maintenance and regeneration will be helpful, where practical principles of parts identification and working with catalogs are discussed.

Condition, origin and benefits of installation

The offered pump comes from an original BMW system and is classified as a used part, which allows for a significant reduction in repair costs compared to a new OEM component. At the same time, you retain the factory geometry, installation compatibility, and operating parameters provided by the vehicle manufacturer.

Replacing a faulty SCR module cooling pump with a functional dismantled part is a solution that:

• reduces the risk of AdBlue system errors and the engine entering limp mode,
• stabilizes the operation of the exhaust emission reduction system,
• allows maintaining correct emission values without costly intervention in the entire metering module.

Complementary items from the BMW Vacuum pumps group

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 pumps, vacuum modules, or components supporting the SCR system, check the available parts in the BMW Vacuum pumps category.