Power Distributor BMW X3 G01 LCI X4 G02 LCI Rear Distribution Box B+ 5A693E4

Power Distributor BMW X3 G01 LCI X4 G02 LCI Rear Distribution Box B+ is a factory-original power supply component responsible for the safe distribution of voltage in the rear section of the vehicle. This component from the Fuses and fuse boxes group ensures a stable power supply to electrical consumers and protects the electrical system against overloads. Using an OEM part is a sensible choice for professional repairs or when replacing a damaged power distribution module.

Specifications and technical data

• SKU: 5A693E4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A693E4
• Substitutable numbers: 5A693E4, 61145A693E4, 61 14 5A693E4
• Location on the vehicle: Rear
• Category: Fuses & Fuse Boxes

Function and role in the BMW electrical system

The rear B+ distribution box in BMW X3 G01 LCI and X4 G02 LCI models is responsible for distributing power from the main positive line to individual circuits in the rear of the vehicle body. This element works with the factory wiring harness, integrating several power circuits and protection features into a single module. This keeps the system organized and makes diagnosing potential faults in the rear area of the vehicle more predictable.

Its location in the rear zone of the car helps shorten the length of the power cables for individual consumers, which reduces voltage drops and improves the stability of electrical systems. For modern BMW models equipped with extensive comfort and safety electronics, a properly functioning power distributor is crucial for the reliability of the entire system.

Design and purpose of the rear B+ distribution box

The presented power distributor has been designed specifically for the BMW X3 G01 LCI and X4 G02 LCI platform, taking into account the characteristic routing of wiring harnesses and the placement of consumers in the rear of the vehicle. The module's design integrates several power circuits, connection points, and protection features into one housing, which facilitates installation and servicing.

The main tasks of this component include:

• distribution of the main B+ power supply to individual circuits in the rear of the vehicle,
• protection of the installation against the effects of short circuits and overloads,
• providing a stable distribution point for high-current consumers,
• organizing electrical connections in the rear zone of the vehicle body.

Thanks to its factory design, the module maintains compatibility with the original BMW electrical architecture, which is important both for the correct operation of systems and for subsequent computer diagnostics.

Benefits of using an original used part

Choosing a used, original power distributor for the BMW X3 G01 LCI / X4 G02 LCI allows you to maintain consistency with the factory installation while optimizing repair costs. The OEM element is designed for a specific platform, ensuring proper mechanical and electrical fitment without the need for wiring modifications or additional adapters.

The most important advantages of such a solution include:

• maintaining the factory logic of power distribution and protection,
• compatibility with original connectors and wiring harnesses,
• reducing the risk of installation errors compared to universal solutions,
• more predictable system behavior during diagnostics and vehicle software updates.

A used OEM part is particularly attractive in the case of post-accident repairs or when replacing a damaged distribution box, where the priority is to restore full functionality at controlled service costs.

Installation zone – rear of the vehicle and service aspects

The location of the power distributor in the rear of the BMW X3 G01 LCI and X4 G02 LCI requires precise alignment with factory mounting points and wiring routing. Using the correct module dedicated to these models facilitates service work – both during replacement and during subsequent system inspections.

During installation, it is important to maintain the correct order of connecting power and ground cables and to check the condition of the contacts. A properly selected B+ distributor minimizes the risk of local overheating, voltage drops, or random electrical errors that could affect the operation of comfort systems, lighting, or trunk equipment.

Complementary items from the BMW Fuses and fuse boxes group

If you are planning a comprehensive repair or upgrade of the electrical installation in the rear of your BMW and need other elements from the same group, such as additional fuse boxes, power distribution modules, or protection housings, check out the available parts in the BMW Fuses and fuse boxes category.

How to make sensible use of used OEM parts

When choosing a used power distributor, it is worth paying attention to the condition of the connectors, the housing, and the absence of signs of overheating. A properly selected and verified component allows you to significantly reduce service costs while maintaining factory quality and fitment. If you want to better plan your repair budget and consciously use the used parts market, you will find practical tips in the article Rising repair costs and the boom in used parts – how to save on car service?.