BMW F20 F21 F30 F31 LCI Exhaust Manifold Gas Pressure Sensor B47 Diesel 8514018

The BMW F20 F21 F30 F31 LCI Exhaust Pressure Sensor Pipe Diesel B47 is an original part from the Oil Coolers and Pipes group, designed for LCI (Life Cycle Impulse) BMW diesel engines from the B47 family. The precisely selected geometry of the pipe ensures stable signal transmission from the exhaust pressure sensor, supporting the proper functioning of the turbocharging and exhaust gas purification systems.

Specifications and technical data

• SKU: 8514018-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8514018
• Substitutable numbers: 8514018, 13628514018
• Fuel type: Diesel
• Category: Engine Oil Coolers & Lines

Purpose and Function of the Exhaust Pressure Sensor Pipe

The exhaust pressure sensor pipe in the Diesel B47 engine is responsible for safely and securely delivering pressure from the exhaust system to the measuring sensor. Accurate reading of this parameter is crucial for:

• precise control of turbocharging and fuel injection,
• efficient operation of the exhaust gas recirculation (EGR) system,
• proper regeneration process of the diesel particulate filter,
• maintaining stable performance and smooth operation of the power unit.

In LCI models of the BMW 1 Series (F20, F21) and 3 Series (F30, F31), a malfunctioning exhaust pressure sensor pipe can lead to a loss of power, limp mode, or engine control unit errors. Using an original part allows for the restoration of factory operating parameters.

Construction and Fitment for BMW F20 F21 F30 F31 LCI

The pipe has been specifically designed for the engine bay architecture of LCI versions, ensuring:

• proper routing along factory mounting points and brackets,
• compatibility with the original exhaust pressure sensor,
• adequate resistance to temperature and loads typical for BMW B47 diesel engines.

This precise fit minimizes the risk of chafing, leaks, and improper routing near hot exhaust system components.

Benefits of Using an Original BMW Pipe

Using an original exhaust pressure sensor pipe in your BMW offers a range of practical service and operational benefits:

• Stable Engine Diagnostics – the control unit receives reliable exhaust pressure data, facilitating precise engine management.
• Improved Exhaust Gas Purification System Cooperation – correct pressure values support the efficient operation of the DPF filter and EGR system.
• Reduced Risk of Errors and Limp Mode – a sealed, properly routed pipe decreases the likelihood of fault messages related to exhaust pressure.
• Consistency with Factory Design – maintaining the original specifications of the exhaust system and engine control.

Condition, Origin, and OEM Aspect

This part is a used component, offered as a used original BMW part. For many users and workshops, choosing used original parts is a sensible compromise between quality and repair cost – especially for components directly interacting with engine control electronics.

To better understand why used original parts are often preferred in professional repairs, we recommend reading the article: Why Used Original Automotive OEM Parts Are a Safe and Economical Choice.

Relationship with the Oil Cooling System and Engine Operation

Although the exhaust pressure sensor pipe belongs to the Oil Coolers and Pipes group, it operates in close conjunction with the engine's entire thermal and exhaust system. Incorrect exhaust pressure values can indirectly affect the thermal load of the power unit, and consequently, the operating conditions of the engine oil.

To better understand the dependencies between the cooling system, engine operating temperature, and component durability, you can refer to the advice in the article: Engine Cooling System – Overheating, Repair, and Used Coolers.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same group, such as oil lines, fittings, or fluid routing components, check the available parts in the BMW Oil Coolers and Pipes category.