BMW 3 Series E93 LCI Heater Duct Rear Left N/S 7133719

BMW 3 Series E93 LCI Heater Duct Rear Left N/S is an original air ventilation system component for the rear cabin, designed for installation on the left side of the BMW 3 Series E93 model. Thanks to its factory geometry and precise fit to the body structure, it ensures stable airflow and proper integration with other heating system components. This is a practical solution for users looking to restore correct air circulation in the rear zone of the vehicle.

Specifications and technical data

• SKU: 7133719
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7133719
• Substitutable numbers: 7133719, 51477133719
• Location on the vehicle: Rear, Left
• Category: Other Air Conditioning & Heating

Purpose and function of the heater duct

The BMW 3 Series E93 LCI Heater Duct Rear Left N/S is responsible for directing the airflow from the heating and ventilation system to the rear interior of the BMW E93. This component is installed in the rear seat area on the driver's side, where it works in conjunction with factory ducts and air vents. A properly selected duct helps maintain an even temperature distribution in the cabin, which translates into passenger comfort when driving in various weather conditions.

Construction and fitment for the BMW E93

The presented duct is structurally adapted to the interior architecture of the BMW 3 Series E93, allowing for installation at original mounting points without the need for modifications. The shape and cross-section of the duct are optimized for airflow to reduce pressure drops and noise during the operation of the ventilation system. As a result, the component maintains compatibility with the factory heating system, ensuring consistency of the entire climate control and ventilation system.

Vehicle placement and installation aspects

The duct is designed for installation in the rear of the vehicle on the left side, in accordance with the factory air duct layout in the BMW E93. This placement allows for precise air delivery to the appropriate interior zones without interfering with other body or upholstery components. Replacing the part usually involves removing the relevant interior covers and plastic trim, followed by swapping the duct for a functional one, which is a beneficial solution for both workshops and DIY car enthusiasts.

Characteristics of the used OEM part

The offered heater duct is a used part, sourced from original BMW equipment. Such OEM components maintain factory fitment to the body and ventilation system, which facilitates installation and minimizes the risk of compatibility issues. Choosing an original used part allows for maintaining the structural integrity of the vehicle while reducing repair costs compared to purchasing a new part.

Integration with other heating system components

The duct works with other ducts, distributors, and air vents to create a complete airflow path in the rear of the cabin. A properly selected and installed component helps avoid leaks, unwanted noise, and a drop in heating efficiency. This is particularly important in vehicles used year-round, where stable operation of the ventilation system affects user comfort and driving safety (e.g., through faster window defogging).

If you are planning a comprehensive repair or upgrade of the rear interior zone in your BMW and need other elements from the same group, such as air ducts, air hoses, or airflow covers, check the available parts in the Other BMW category.

To better understand the importance of properly selected components for vehicle performance and durability, it is worth reading the analysis of structural differences between sports and standard versions – this is discussed in detail in the article Audi RS vs other models – what is hidden under the hood and chassis?.

If you are interested in how the use of used OEM components can affect repair time and service costs, the guide Availability of car parts off the shelf vs repair time – how do used OEM parts shorten workshop stays?, which discusses the practical aspects of selecting such components, will be helpful.