BMW 5 7 Series F01 F02 F10 LCI Wiring Harness Engine Gearbox Module Set 7823770

The BMW 5 / 7 F01 F02 F10 LCI Engine and Gearbox Harness is an original wiring set designed for precise connection of control modules within BMW powertrains. This product from the Cables, Harnesses, and Connectors category ensures stable signal and power transmission between the engine, gearbox, and vehicle electronics, contributing to the proper functioning of powertrain systems. Thanks to its factory OEM design, the harness is tailored to the electrical system architecture of specific facelifted (LCI) 5 and 7 Series models.

Specifications and technical data

• SKU: rhd-7823770
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7823770
• Substitutable numbers: 12517823770, 7823770, N57N, EM
• Category: Wiring Harnesses, Cables & Connectors

Application and Function in the Powertrain System

The presented harness is intended for LCI facelifted BMW 5 and 7 Series F generation models, where it is responsible for connecting the engine, gearbox, and associated control modules. It includes signal and power wires for sensors, actuators, and control elements, enabling the correct operation of the engine and gearbox control units.

With its factory design, the harness maintains proper wire routing, adequate shielding, and connector placement, which minimizes the risk of electromagnetic interference and communication errors. This is particularly important in modern diesel powertrains, where the precision of operating parameter readings directly impacts driving comfort, performance, and fuel consumption.

Construction, Connectors, and Compatibility

The BMW engine and gearbox harness is designed as a complete installation solution, featuring factory connectors matched to control modules, sensors, and ancillary components. The plugs used are profiled for specific sockets, minimizing the risk of connection errors and facilitating servicing.

The original design includes appropriate wire lengths, mounting points, and protective covers, ensuring the harness follows factory routing in the engine bay and around the gearbox. This solution promotes tidiness in the wiring, improves service access, and reduces mechanical stress on the wires during powertrain operation.

Benefits of Using an Original BMW Harness

Using an original harness to replace a damaged or modified installation offers several practical benefits:

• Factory Fitment – compatibility with the electrical architecture of specific BMW 5 and 7 Series F01/F02/F10 LCI versions.
• Stable communication between engine and gearbox control modules.
• Reduced risk of diagnostic errors resulting from incorrect connections or makeshift repairs.
• Easier installation due to provided mounting points and appropriately shaped harnesses.

This product belongs to the Cables, Harnesses, and Connectors group, meaning it is designed for durable and safe signal transmission in the demanding environment of the engine bay.

Condition, Verification, and Part Selection

The offered harness is a used item, which means it comes from a vehicle disassembly and represents an economical alternative to new OEM components. Before installation, a standard inspection of connectors, insulation, and mounting points is recommended to ensure trouble-free long-term operation.

When selecting a harness for a specific BMW model, it is important to consider the compatibility of the engine version, gearbox, and equipment configuration. Manufacturer markings and reference numbers are helpful for precisely matching the part to the vehicle and avoiding compatibility issues.

Related Products and Technical Knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other items from the same group, such as additional harnesses, signal cables, or module connectors, check the available parts in the BMW Cables, Harnesses, and Connectors category.

For larger servicing tasks, especially before the winter season, it is advisable to plan an inspection of key electrical and mechanical components. Practical tips for assessing the condition of used components and checklists can be found in the article: Winter Essentials: Which Used Car Parts Are Worth Checking and Replacing Before the Frost?.